diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2c66ae0950..1dccc3ab58 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1402,15 +1402,19 @@ if(WITH_HALIDE OR HAVE_HALIDE)
   status("    Halide:"     HAVE_HALIDE      THEN "YES (${HALIDE_LIBRARIES} ${HALIDE_INCLUDE_DIRS})" ELSE NO)
 endif()
 
-if(WITH_INF_ENGINE OR HAVE_INF_ENGINE)
-  if(HAVE_INF_ENGINE)
-    set(__msg "YES")
-    if(DEFINED INF_ENGINE_VERSION)
-      set(__msg "YES (ver ${INF_ENGINE_VERSION})")
+if(WITH_INF_ENGINE OR INF_ENGINE_TARGET)
+  if(INF_ENGINE_TARGET)
+    set(__msg "YES (${INF_ENGINE_RELEASE} / ${INF_ENGINE_VERSION})")
+    get_target_property(_lib ${INF_ENGINE_TARGET} IMPORTED_LOCATION)
+    if(NOT _lib)
+      get_target_property(_lib_rel ${INF_ENGINE_TARGET} IMPORTED_IMPLIB_RELEASE)
+      get_target_property(_lib_dbg ${INF_ENGINE_TARGET} IMPORTED_IMPLIB_DEBUG)
+      set(_lib "${_lib_rel} / ${_lib_dbg}")
     endif()
+    get_target_property(_inc ${INF_ENGINE_TARGET} INTERFACE_INCLUDE_DIRECTORIES)
     status("    Inference Engine:" "${__msg}")
-    status("                libs:" "${INF_ENGINE_LIBRARIES}")
-    status("            includes:" "${INF_ENGINE_INCLUDE_DIRS}")
+    status("                libs:" "${_lib}")
+    status("            includes:" "${_inc}")
   else()
     status("    Inference Engine:"     "NO")
   endif()
diff --git a/cmake/OpenCVCompilerOptimizations.cmake b/cmake/OpenCVCompilerOptimizations.cmake
index 76f56ba422..8beabefe41 100644
--- a/cmake/OpenCVCompilerOptimizations.cmake
+++ b/cmake/OpenCVCompilerOptimizations.cmake
@@ -700,12 +700,21 @@ macro(ocv_compiler_optimization_fill_cpu_config)
     list(APPEND __dispatch_modes ${CPU_DISPATCH_${OPT}_FORCE} ${OPT})
   endforeach()
   list(REMOVE_DUPLICATES __dispatch_modes)
-  set(OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE "")
   foreach(OPT ${__dispatch_modes})
     set(OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE "${OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE}
 #define CV_CPU_DISPATCH_COMPILE_${OPT} 1")
   endforeach()
 
+  set(OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE "${OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE}
+\n\n#define CV_CPU_DISPATCH_FEATURES 0 \\")
+  foreach(OPT ${__dispatch_modes})
+    if(NOT DEFINED CPU_${OPT}_FEATURE_ALIAS OR NOT "x${CPU_${OPT}_FEATURE_ALIAS}" STREQUAL "x")
+      set(OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE "${OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE}
+    , CV_CPU_${OPT} \\")
+    endif()
+  endforeach()
+  set(OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE "${OPENCV_CPU_DISPATCH_DEFINITIONS_CONFIGMAKE}\n")
+
   set(OPENCV_CPU_CONTROL_DEFINITIONS_CONFIGMAKE "// AUTOGENERATED, DO NOT EDIT\n")
   foreach(OPT ${CPU_ALL_OPTIMIZATIONS})
     if(NOT DEFINED CPU_${OPT}_FEATURE_ALIAS OR NOT "x${CPU_${OPT}_FEATURE_ALIAS}" STREQUAL "x")
diff --git a/cmake/OpenCVDetectInferenceEngine.cmake b/cmake/OpenCVDetectInferenceEngine.cmake
index 7c75e97e67..e5e64fc6db 100644
--- a/cmake/OpenCVDetectInferenceEngine.cmake
+++ b/cmake/OpenCVDetectInferenceEngine.cmake
@@ -1,79 +1,87 @@
 # The script detects Intel(R) Inference Engine installation
 #
-# Parameters:
-# INTEL_CVSDK_DIR - Path to Inference Engine root folder
-# IE_PLUGINS_PATH - Path to folder with Inference Engine plugins
+# Cache variables:
+# INF_ENGINE_OMP_DIR - directory with OpenMP library to link with (needed by some versions of IE)
+# INF_ENGINE_RELEASE - a number reflecting IE source interface (linked with OpenVINO release)
 #
-# On return this will define:
+# Detect parameters:
+# 1. Native cmake IE package:
+#    - enironment variable InferenceEngine_DIR is set to location of cmake module
+# 2. Custom location:
+#    - INF_ENGINE_INCLUDE_DIRS - headers search location
+#    - INF_ENGINE_LIB_DIRS     - library search location
+# 3. OpenVINO location:
+#    - environment variable INTEL_CVSDK_DIR is set to location of OpenVINO installation dir
+#    - INF_ENGINE_PLATFORM - part of name of library directory representing its platform (default ubuntu_16.04)
 #
-# HAVE_INF_ENGINE          - True if Intel Inference Engine was found
-# INF_ENGINE_INCLUDE_DIRS  - Inference Engine include folder
-# INF_ENGINE_LIBRARIES     - Inference Engine libraries and it's dependencies
+# Result:
+# INF_ENGINE_TARGET - set to name of imported library target representing InferenceEngine
 #
-macro(ie_fail)
-    set(HAVE_INF_ENGINE FALSE)
-    return()
-endmacro()
-
 
-find_package(InferenceEngine QUIET)
-if(InferenceEngine_FOUND)
-  set(INF_ENGINE_LIBRARIES "${InferenceEngine_LIBRARIES}")
-  set(INF_ENGINE_INCLUDE_DIRS "${InferenceEngine_INCLUDE_DIRS}")
-  set(INF_ENGINE_VERSION "${InferenceEngine_VERSION}")
-  set(HAVE_INF_ENGINE TRUE)
-  return()
+if(NOT HAVE_CXX11)
+    message(WARNING "DL Inference engine requires C++11. You can turn it on via ENABLE_CXX11=ON CMake flag.")
+    return()
 endif()
 
-ocv_check_environment_variables(INTEL_CVSDK_DIR INF_ENGINE_ROOT_DIR IE_PLUGINS_PATH)
+# =======================
 
-if(NOT INF_ENGINE_ROOT_DIR OR NOT EXISTS "${INF_ENGINE_ROOT_DIR}/include/inference_engine.hpp")
-    set(ie_root_paths "${INF_ENGINE_ROOT_DIR}")
-    if(DEFINED INTEL_CVSDK_DIR)
-        list(APPEND ie_root_paths "${INTEL_CVSDK_DIR}/")
-        list(APPEND ie_root_paths "${INTEL_CVSDK_DIR}/deployment_tools/inference_engine")
-    endif()
+function(add_custom_ie_build _inc _lib _lib_rel _lib_dbg _msg)
+  if(NOT _inc OR NOT (_lib OR _lib_rel OR _lib_dbg))
+    return()
+  endif()
+  add_library(inference_engine UNKNOWN IMPORTED)
+  set_target_properties(inference_engine PROPERTIES
+    IMPORTED_LOCATION "${_lib}"
+    IMPORTED_IMPLIB_RELEASE "${_lib_rel}"
+    IMPORTED_IMPLIB_DEBUG "${_lib_dbg}"
+    INTERFACE_INCLUDE_DIRECTORIES "${_inc}"
+  )
+  find_library(omp_lib iomp5 PATHS "${INF_ENGINE_OMP_DIR}" NO_DEFAULT_PATH)
+  if(NOT omp_lib)
+    message(WARNING "OpenMP for IE have not been found. Set INF_ENGINE_OMP_DIR variable if you experience build errors.")
+  else()
+    set_target_properties(inference_engine PROPERTIES IMPORTED_LINK_INTERFACE_LIBRARIES "${omp_lib}")
+  endif()
+  set(INF_ENGINE_VERSION "Unknown" CACHE STRING "")
+  set(INF_ENGINE_TARGET inference_engine PARENT_SCOPE)
+  message(STATUS "Detected InferenceEngine: ${_msg}")
+endfunction()
 
-    if(NOT ie_root_paths)
-        list(APPEND ie_root_paths "/opt/intel/computer_vision_sdk/deployment_tools/inference_engine/")
-    endif()
+# ======================
 
-    find_path(INF_ENGINE_ROOT_DIR include/inference_engine.hpp PATHS ${ie_root_paths})
-    if(INF_ENGINE_ROOT_DIR MATCHES "-NOTFOUND$")
-      unset(INF_ENGINE_ROOT_DIR CACHE)
-    endif()
+find_package(InferenceEngine QUIET)
+if(InferenceEngine_FOUND)
+  set(INF_ENGINE_TARGET IE::inference_engine)
+  set(INF_ENGINE_VERSION "${InferenceEngine_VERSION}" CACHE STRING "")
+  message(STATUS "Detected InferenceEngine: cmake package")
 endif()
 
-set(INF_ENGINE_INCLUDE_DIRS "${INF_ENGINE_ROOT_DIR}/include" CACHE PATH "Path to Inference Engine include directory")
-
-if(NOT INF_ENGINE_ROOT_DIR
-    OR NOT EXISTS "${INF_ENGINE_ROOT_DIR}"
-    OR NOT EXISTS "${INF_ENGINE_ROOT_DIR}/include/inference_engine.hpp"
-)
-    message(WARNING "DL IE: Can't detect INF_ENGINE_ROOT_DIR location.")
-    ie_fail()
+if(NOT INF_ENGINE_TARGET AND INF_ENGINE_LIB_DIRS AND INF_ENGINE_INCLUDE_DIRS)
+  find_path(ie_custom_inc "inference_engine.hpp" PATHS "${INF_ENGINE_INCLUDE_DIRS}" NO_DEFAULT_PATH)
+  find_library(ie_custom_lib "inference_engine" PATHS "${INF_ENGINE_LIB_DIRS}" NO_DEFAULT_PATH)
+  find_library(ie_custom_lib_rel "inference_engine" PATHS "${INF_ENGINE_LIB_DIRS}/Release" NO_DEFAULT_PATH)
+  find_library(ie_custom_lib_dbg "inference_engine" PATHS "${INF_ENGINE_LIB_DIRS}/Debug" NO_DEFAULT_PATH)
+  add_custom_ie_build("${ie_custom_inc}" "${ie_custom_lib}" "${ie_custom_lib_rel}" "${ie_custom_lib_dbg}" "INF_ENGINE_{INCLUDE,LIB}_DIRS")
 endif()
 
-set(INF_ENGINE_LIBRARIES "")
-
-set(ie_lib_list inference_engine)
-
-if(NOT IS_ABSOLUTE "${IE_PLUGINS_PATH}")
-  set(IE_PLUGINS_PATH "${INF_ENGINE_ROOT_DIR}/${IE_PLUGINS_PATH}")
+set(_loc "$ENV{INTEL_CVSDK_DIR}")
+if(NOT INF_ENGINE_TARGET AND _loc)
+  set(INF_ENGINE_PLATFORM "ubuntu_16.04" CACHE STRING "InferenceEngine platform (library dir)")
+  find_path(ie_custom_env_inc "inference_engine.hpp" PATHS "${_loc}/deployment_tools/inference_engine/include" NO_DEFAULT_PATH)
+  find_library(ie_custom_env_lib "inference_engine" PATHS "${_loc}/deployment_tools/inference_engine/lib/${INF_ENGINE_PLATFORM}/intel64" NO_DEFAULT_PATH)
+  find_library(ie_custom_env_lib_rel "inference_engine" PATHS "${_loc}/deployment_tools/inference_engine/lib/intel64/Release" NO_DEFAULT_PATH)
+  find_library(ie_custom_env_lib_dbg "inference_engine" PATHS "${_loc}/deployment_tools/inference_engine/lib/intel64/Debug" NO_DEFAULT_PATH)
+  add_custom_ie_build("${ie_custom_env_inc}" "${ie_custom_env_lib}" "${ie_custom_env_lib_rel}" "${ie_custom_env_lib_dbg}" "OpenVINO (${_loc})")
 endif()
 
-link_directories(
-  ${INF_ENGINE_ROOT_DIR}/external/mkltiny_lnx/lib
-  ${INF_ENGINE_ROOT_DIR}/external/cldnn/lib
-)
-
-foreach(lib ${ie_lib_list})
-    find_library(${lib} NAMES ${lib} HINTS ${IE_PLUGINS_PATH})
-    if(NOT ${lib})
-        message(WARNING "DL IE: Can't find library: '${lib}'")
-        ie_fail()
-    endif()
-    list(APPEND INF_ENGINE_LIBRARIES ${${lib}})
-endforeach()
+# Add more features to the target
 
-set(HAVE_INF_ENGINE TRUE)
+if(INF_ENGINE_TARGET)
+  if(NOT INF_ENGINE_RELEASE)
+    message(WARNING "InferenceEngine version have not been set, 2018R2 will be used by default. Set INF_ENGINE_RELEASE variable if you experience build errors.")
+  endif()
+  set(INF_ENGINE_RELEASE "2018020000" CACHE STRING "Force IE version, should be in form YYYYAABBCC (e.g. 2018R2.0.2 -> 2018020002)")
+  set_target_properties(${INF_ENGINE_TARGET} PROPERTIES
+    INTERFACE_COMPILE_DEFINITIONS "HAVE_INF_ENGINE=1;INF_ENGINE_RELEASE=${INF_ENGINE_RELEASE}"
+  )
+endif()
diff --git a/cmake/OpenCVModule.cmake b/cmake/OpenCVModule.cmake
index db439b3981..00d15dc6d9 100644
--- a/cmake/OpenCVModule.cmake
+++ b/cmake/OpenCVModule.cmake
@@ -1132,7 +1132,7 @@ function(ocv_add_perf_tests)
       source_group("Src" FILES "${${the_target}_pch}")
       ocv_add_executable(${the_target} ${OPENCV_PERF_${the_module}_SOURCES} ${${the_target}_pch})
       ocv_target_include_modules(${the_target} ${perf_deps} "${perf_path}")
-      ocv_target_link_libraries(${the_target} LINK_PRIVATE ${perf_deps} ${OPENCV_MODULE_${the_module}_DEPS} ${OPENCV_LINKER_LIBS})
+      ocv_target_link_libraries(${the_target} LINK_PRIVATE ${perf_deps} ${OPENCV_MODULE_${the_module}_DEPS} ${OPENCV_LINKER_LIBS} ${OPENCV_PERF_${the_module}_DEPS})
       add_dependencies(opencv_perf_tests ${the_target})
 
       set_target_properties(${the_target} PROPERTIES LABELS "${OPENCV_MODULE_${the_module}_LABEL};PerfTest")
@@ -1175,7 +1175,7 @@ function(ocv_add_perf_tests)
 endfunction()
 
 # this is a command for adding OpenCV accuracy/regression tests to the module
-# ocv_add_accuracy_tests([FILES <source group name> <list of sources>] [DEPENDS_ON] <list of extra dependencies>)
+# ocv_add_accuracy_tests(<list of extra dependencies>)
 function(ocv_add_accuracy_tests)
   ocv_debug_message("ocv_add_accuracy_tests(" ${ARGN} ")")
 
@@ -1211,7 +1211,7 @@ function(ocv_add_accuracy_tests)
       source_group("Src" FILES "${${the_target}_pch}")
       ocv_add_executable(${the_target} ${OPENCV_TEST_${the_module}_SOURCES} ${${the_target}_pch})
       ocv_target_include_modules(${the_target} ${test_deps} "${test_path}")
-      ocv_target_link_libraries(${the_target} LINK_PRIVATE ${test_deps} ${OPENCV_MODULE_${the_module}_DEPS} ${OPENCV_LINKER_LIBS})
+      ocv_target_link_libraries(${the_target} LINK_PRIVATE ${test_deps} ${OPENCV_MODULE_${the_module}_DEPS} ${OPENCV_LINKER_LIBS} ${OPENCV_TEST_${the_module}_DEPS})
       add_dependencies(opencv_tests ${the_target})
 
       set_target_properties(${the_target} PROPERTIES LABELS "${OPENCV_MODULE_${the_module}_LABEL};AccuracyTest")
diff --git a/doc/opencv.bib b/doc/opencv.bib
index edb7033e8d..7c8303f7f4 100644
--- a/doc/opencv.bib
+++ b/doc/opencv.bib
@@ -1016,3 +1016,17 @@
   year = {2017},
   organization = {IEEE}
 }
+
+@ARTICLE{gonzalez,
+  title={Digital Image Fundamentals, Digital Imaging Processing},
+  author={Gonzalez, Rafael C and others},
+  year={1987},
+  publisher={Addison Wesley Publishing Company}
+}
+
+@ARTICLE{gruzman,
+  title={Цифровая обработка изображений в информационных системах},
+  author={Грузман, И.С. and Киричук, В.С. and Косых, В.П. and Перетягин, Г.И. and Спектор, А.А.},
+  year={2000},
+  publisher={Изд-во НГТУ Новосибирск}
+}
diff --git a/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/original.jpg b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/original.jpg
new file mode 100755
index 0000000000..ecd23c89f9
Binary files /dev/null and b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/original.jpg differ
diff --git a/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/psf.png b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/psf.png
new file mode 100755
index 0000000000..3835124db8
Binary files /dev/null and b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/psf.png differ
diff --git a/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/recovered.jpg b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/recovered.jpg
new file mode 100755
index 0000000000..2794d427d7
Binary files /dev/null and b/doc/tutorials/imgproc/out_of_focus_deblur_filter/images/recovered.jpg differ
diff --git a/doc/tutorials/imgproc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.markdown b/doc/tutorials/imgproc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.markdown
new file mode 100755
index 0000000000..abab071208
--- /dev/null
+++ b/doc/tutorials/imgproc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.markdown
@@ -0,0 +1,112 @@
+Out-of-focus Deblur Filter {#tutorial_out_of_focus_deblur_filter}
+==========================
+
+Goal
+----
+
+In this tutorial you will learn:
+
+-   what is a degradation image model
+-   what is PSF of out-of-focus image
+-   how to restore a blurred image
+-   what is Wiener filter
+
+Theory
+------
+
+@note The explanation is based on the books @cite gonzalez and @cite gruzman. Also, you can refer to Matlab's tutorial [Image Deblurring in Matlab] and an article [SmartDeblur].
+@note An out-of-focus image on this page is a real world  image. An out-of-focus was done manually by camera optics.
+
+### What is a degradation image model?
+
+A mathematical model of the image degradation in frequency domain representation is:
+
+\f[S = H\cdot U + N\f]
+
+where
+\f$S\f$ is a spectrum of blurred (degraded) image,
+\f$U\f$ is a spectrum of original true (undegraded) image,
+\f$H\f$ is frequency response of point spread function (PSF),
+\f$N\f$ is a spectrum of additive noise.
+
+Circular PSF is a good approximation of out-of-focus distortion. Such PSF is specified by only one parameter - radius \f$R\f$. Circular PSF is used in this work.
+
+![Circular point spread function](psf.png)
+
+### How to restore an blurred image?
+
+The objective of restoration (deblurring) is to obtain an estimate of the original image. Restoration formula in frequency domain is:
+
+\f[U' = H_w\cdot S\f]
+
+where
+\f$U'\f$ is spectrum of estimation of original image \f$U\f$,
+\f$H_w\f$ is restoration filter, for example, Wiener filter.
+
+### What is Wiener filter?
+
+Wiener filter is a way to restore a blurred image. Let's suppose that PSF is a real and symmetric signal, a power spectrum of the original true image and noise are not known,
+then simplified Wiener formula is:
+
+\f[H_w = \frac{H}{|H|^2+\frac{1}{SNR}} \f]
+
+where
+\f$SNR\f$ is signal-to-noise ratio.
+
+So, in order to recover an out-of-focus image by Wiener filter, it needs to know \f$SNR\f$ and \f$R\f$ of circular PSF.
+
+
+Source code
+-----------
+
+You can find source code in the `samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp` of the OpenCV source code library.
+
+@include cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp
+
+Explanation
+-----------
+
+An out-of-focus image recovering algorithm consists of PSF generation, Wiener filter generation and filtering an blurred image in frequency domain:
+@snippet samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp main
+
+A function calcPSF() forms an circular PSF according to input parameter radius \f$R\f$:
+@snippet samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp calcPSF
+
+A function calcWnrFilter() synthesizes simplified Wiener filter \f$H_w\f$ according to formula described above:
+@snippet samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp calcWnrFilter
+
+A function fftshift() rearranges PSF. This code was just copied from tutorial @ref tutorial_discrete_fourier_transform "Discrete Fourier Transform":
+@snippet samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp fftshift
+
+A function filter2DFreq() filters an blurred image in frequency domain:
+@snippet samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp filter2DFreq
+
+Result
+------
+
+Below you can see real out-of-focus image:
+![Out-of-focus image](images/original.jpg)
+
+
+Below result was done by \f$R\f$ = 53 and \f$SNR\f$ = 5200 parameters:
+![The restored (deblurred) image](images/recovered.jpg)
+
+The Wiener filter was used, values of \f$R\f$ and \f$SNR\f$ were selected manually to give the best possible visual result.
+We can see that the result is not perfect, but it gives us a hint to the image content. With some difficulty, the text is readable.
+
+@note The parameter \f$R\f$ is the most important. So you should adjust \f$R\f$ first, then \f$SNR\f$.
+@note Sometimes you can observe the ringing effect in an restored image. This effect can be reduced by several methods. For example, you can taper input image edges.
+
+You can also find a quick video demonstration of this on
+[YouTube](https://youtu.be/0bEcE4B0XP4).
+@youtube{0bEcE4B0XP4}
+
+References
+------
+- [Image Deblurring in Matlab] - Image Deblurring in Matlab
+- [SmartDeblur] - SmartDeblur site
+
+<!-- invisible references list -->
+[Digital Image Processing]: http://web.ipac.caltech.edu/staff/fmasci/home/astro_refs/Digital_Image_Processing_2ndEd.pdf
+[Image Deblurring in Matlab]: https://www.mathworks.com/help/images/image-deblurring.html
+[SmartDeblur]: http://yuzhikov.com/articles/BlurredImagesRestoration1.htm
diff --git a/doc/tutorials/imgproc/table_of_content_imgproc.markdown b/doc/tutorials/imgproc/table_of_content_imgproc.markdown
index 59c985e1dd..3d82c0cf53 100644
--- a/doc/tutorials/imgproc/table_of_content_imgproc.markdown
+++ b/doc/tutorials/imgproc/table_of_content_imgproc.markdown
@@ -292,3 +292,13 @@ In this section you will learn about the image processing (manipulation) functio
     *Author:* Theodore Tsesmelis
 
     Where we learn to segment objects using Laplacian filtering, the Distance Transformation and the Watershed algorithm.
+
+-   @subpage tutorial_out_of_focus_deblur_filter
+
+    *Languages:* C++
+
+    *Compatibility:* \> OpenCV 2.0
+
+    *Author:* Karpushin Vladislav
+
+    You will learn how to recover an out-of-focus image by Wiener filter.
diff --git a/modules/core/include/opencv2/core/hal/intrin.hpp b/modules/core/include/opencv2/core/hal/intrin.hpp
index 031f8f3d02..263659d302 100644
--- a/modules/core/include/opencv2/core/hal/intrin.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin.hpp
@@ -60,6 +60,17 @@
 // access from within opencv code more accessible
 namespace cv {
 
+namespace hal {
+
+enum StoreMode
+{
+    STORE_UNALIGNED = 0,
+    STORE_ALIGNED = 1,
+    STORE_ALIGNED_NOCACHE = 2
+};
+
+}
+
 template<typename _Tp> struct V_TypeTraits
 {
 };
@@ -154,7 +165,7 @@ using namespace CV_CPU_OPTIMIZATION_HAL_NAMESPACE;
 // but some of AVX2 intrinsics get v256_ prefix instead of v_, e.g. v256_load() vs v_load().
 // Correspondingly, the wide intrinsics (which are mapped to the "widest"
 // available instruction set) will get vx_ prefix
-// (and will be mapped to v256_ counterparts) (e.g. vx_load() => v245_load())
+// (and will be mapped to v256_ counterparts) (e.g. vx_load() => v256_load())
 #if CV_AVX2
 
 #include "opencv2/core/hal/intrin_avx.hpp"
@@ -214,14 +225,16 @@ CV_CPU_OPTIMIZATION_HAL_NAMESPACE_BEGIN
     inline vtyp vx_setzero_##short_typ() { return prefix##_setzero_##short_typ(); } \
     inline vtyp vx_##loadsfx(const typ* ptr) { return prefix##_##loadsfx(ptr); } \
     inline vtyp vx_##loadsfx##_aligned(const typ* ptr) { return prefix##_##loadsfx##_aligned(ptr); } \
+    inline vtyp vx_##loadsfx##_low(const typ* ptr) { return prefix##_##loadsfx##_low(ptr); } \
+    inline vtyp vx_##loadsfx##_halves(const typ* ptr0, const typ* ptr1) { return prefix##_##loadsfx##_halves(ptr0, ptr1); } \
     inline void vx_store(typ* ptr, const vtyp& v) { return v_store(ptr, v); } \
     inline void vx_store_aligned(typ* ptr, const vtyp& v) { return v_store_aligned(ptr, v); }
 
 #define CV_INTRIN_DEFINE_WIDE_LOAD_EXPAND(typ, wtyp, prefix) \
-inline wtyp vx_load_expand(const typ* ptr) { return prefix##_load_expand(ptr); }
+    inline wtyp vx_load_expand(const typ* ptr) { return prefix##_load_expand(ptr); }
 
 #define CV_INTRIN_DEFINE_WIDE_LOAD_EXPAND_Q(typ, qtyp, prefix) \
-inline qtyp vx_load_expand_q(const typ* ptr) { return prefix##_load_expand_q(ptr); }
+    inline qtyp vx_load_expand_q(const typ* ptr) { return prefix##_load_expand_q(ptr); }
 
 #define CV_INTRIN_DEFINE_WIDE_INTRIN_WITH_EXPAND(typ, vtyp, short_typ, wtyp, qtyp, prefix, loadsfx) \
     CV_INTRIN_DEFINE_WIDE_INTRIN(typ, vtyp, short_typ, prefix, loadsfx) \
@@ -316,7 +329,7 @@ template<typename _Tp> struct V_RegTraits
     CV_INTRIN_DEFINE_WIDE_INTRIN_ALL_TYPES(v256)
     CV_INTRIN_DEFINE_WIDE_INTRIN(double, v_float64, f64, v256, load)
     inline void vx_cleanup() { v256_cleanup(); }
-#elif CV_SIMD128
+#elif CV_SIMD128 || CV_SIMD128_CPP
     typedef v_uint8x16  v_uint8;
     typedef v_int8x16   v_int8;
     typedef v_uint16x8  v_uint16;
diff --git a/modules/core/include/opencv2/core/hal/intrin_avx.hpp b/modules/core/include/opencv2/core/hal/intrin_avx.hpp
index 4ea66f5c0b..c64ff99f75 100644
--- a/modules/core/include/opencv2/core/hal/intrin_avx.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_avx.hpp
@@ -304,6 +304,17 @@ inline v_float16x16 v256_setall_f16(short val) { return v_float16x16(_mm256_set1
     { _mm256_storeu_si256((__m256i*)ptr, a.val); }                    \
     inline void v_store_aligned(_Tp* ptr, const _Tpvec& a)            \
     { _mm256_store_si256((__m256i*)ptr, a.val); }                     \
+    inline void v_store_aligned_nocache(_Tp* ptr, const _Tpvec& a)    \
+    { _mm256_stream_si256((__m256i*)ptr, a.val); }                    \
+    inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode mode) \
+    { \
+        if( mode == hal::STORE_UNALIGNED ) \
+            _mm256_storeu_si256((__m256i*)ptr, a.val); \
+        else if( mode == hal::STORE_ALIGNED_NOCACHE )  \
+            _mm256_stream_si256((__m256i*)ptr, a.val); \
+        else \
+            _mm256_store_si256((__m256i*)ptr, a.val); \
+    } \
     inline void v_store_low(_Tp* ptr, const _Tpvec& a)                \
     { _mm_storeu_si128((__m128i*)ptr, _v256_extract_low(a.val)); }    \
     inline void v_store_high(_Tp* ptr, const _Tpvec& a)               \
@@ -338,6 +349,17 @@ OPENCV_HAL_IMPL_AVX_LOADSTORE(v_int64x4,   int64)
     { _mm256_storeu_##suffix(ptr, a.val); }                               \
     inline void v_store_aligned(_Tp* ptr, const _Tpvec& a)                \
     { _mm256_store_##suffix(ptr, a.val); }                                \
+    inline void v_store_aligned_nocache(_Tp* ptr, const _Tpvec& a)        \
+    { _mm256_stream_##suffix(ptr, a.val); }                               \
+    inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode mode) \
+    { \
+        if( mode == hal::STORE_UNALIGNED ) \
+            _mm256_storeu_##suffix(ptr, a.val); \
+        else if( mode == hal::STORE_ALIGNED_NOCACHE )  \
+            _mm256_stream_##suffix(ptr, a.val); \
+        else \
+            _mm256_store_##suffix(ptr, a.val); \
+    } \
     inline void v_store_low(_Tp* ptr, const _Tpvec& a)                    \
     { _mm_storeu_##suffix(ptr, _v256_extract_low(a.val)); }               \
     inline void v_store_high(_Tp* ptr, const _Tpvec& a)                   \
@@ -407,6 +429,11 @@ inline v_float16x16 v256_load_f16(const short* ptr)
 inline v_float16x16 v256_load_f16_aligned(const short* ptr)
 { return v_float16x16(_mm256_load_si256((const __m256i*)ptr)); }
 
+inline v_float16x16 v256_load_f16_low(const short* ptr)
+{ return v_float16x16(v256_load_low(ptr).val); }
+inline v_float16x16 v256_load_f16_halves(const short* ptr0, const short* ptr1)
+{ return v_float16x16(v256_load_halves(ptr0, ptr1).val); }
+
 inline void v_store(short* ptr, const v_float16x16& a)
 { _mm256_storeu_si256((__m256i*)ptr, a.val); }
 inline void v_store_aligned(short* ptr, const v_float16x16& a)
@@ -819,94 +846,80 @@ OPENCV_HAL_IMPL_AVX_BIN_FUNC(v_max, v_float64x4, _mm256_max_pd)
 template<int imm>
 inline v_uint8x32 v_rotate_left(const v_uint8x32& a, const v_uint8x32& b)
 {
-    __m256i swap = _mm256_permute2x128_si256(a.val, b.val, 0x03);
+    enum {IMM_R = (16 - imm) & 0xFF};
+    enum {IMM_R2 = (32 - imm) & 0xFF};
 
-    switch(imm)
-    {
-        case 0:  return a;
-        case 32: return b;
-        case 16: return v_uint8x32(swap);
-    }
+    if (imm == 0)  return a;
+    if (imm == 32) return b;
+    if (imm > 32)  return v_uint8x32();
 
-    if (imm < 16) return v_uint8x32(_mm256_alignr_epi8(a.val, swap, 16 - imm));
-    if (imm < 32) return v_uint8x32(_mm256_alignr_epi8(swap, b.val, 32 - imm));
-
-    return v_uint8x32();
+    __m256i swap = _mm256_permute2x128_si256(a.val, b.val, 0x03);
+    if (imm == 16) return v_uint8x32(swap);
+    if (imm < 16)  return v_uint8x32(_mm256_alignr_epi8(a.val, swap, IMM_R));
+    return v_uint8x32(_mm256_alignr_epi8(swap, b.val, IMM_R2)); // imm < 32
 }
 
 template<int imm>
 inline v_uint8x32 v_rotate_right(const v_uint8x32& a, const v_uint8x32& b)
 {
-    __m256i swap = _mm256_permute2x128_si256(a.val, b.val, 0x21);
+    enum {IMM_L = (imm - 16) & 0xFF};
 
-    switch(imm)
-    {
-        case 0:  return a;
-        case 32: return b;
-        case 16: return v_uint8x32(swap);
-    }
-
-    if (imm < 16) return v_uint8x32(_mm256_alignr_epi8(swap, a.val, imm));
-    if (imm < 32) return v_uint8x32(_mm256_alignr_epi8(b.val, swap, imm - 16));
+    if (imm == 0)  return a;
+    if (imm == 32) return b;
+    if (imm > 32)  return v_uint8x32();
 
-    return v_uint8x32();
+    __m256i swap = _mm256_permute2x128_si256(a.val, b.val, 0x21);
+    if (imm == 16) return v_uint8x32(swap);
+    if (imm < 16)  return v_uint8x32(_mm256_alignr_epi8(swap, a.val, imm));
+    return v_uint8x32(_mm256_alignr_epi8(b.val, swap, IMM_L));
 }
 
 template<int imm>
 inline v_uint8x32 v_rotate_left(const v_uint8x32& a)
 {
-    v_uint8x32 res;
+    enum {IMM_L = (imm - 16) & 0xFF};
+    enum {IMM_R = (16 - imm) & 0xFF};
+
+    if (imm == 0) return a;
+    if (imm > 32) return v_uint8x32();
+
     // ESAC control[3] ? [127:0] = 0
     __m256i swapz = _mm256_permute2x128_si256(a.val, a.val, _MM_SHUFFLE(0, 0, 2, 0));
-
-    if (imm == 0)
-        return a;
-    if (imm == 16)
-        res.val = swapz;
-    else if (imm < 16)
-        res.val = _mm256_alignr_epi8(a.val, swapz, 16 - imm);
-    else if (imm < 32)
-        res.val = _mm256_slli_si256(swapz, imm - 16);
-    else
-        return v_uint8x32();
-    return res;
+    if (imm == 16) return v_uint8x32(swapz);
+    if (imm < 16)  return v_uint8x32(_mm256_alignr_epi8(a.val, swapz, IMM_R));
+    return v_uint8x32(_mm256_slli_si256(swapz, IMM_L));
 }
 
 template<int imm>
 inline v_uint8x32 v_rotate_right(const v_uint8x32& a)
 {
-    v_uint8x32 res;
+    enum {IMM_L = (imm - 16) & 0xFF};
+
+    if (imm == 0) return a;
+    if (imm > 32) return v_uint8x32();
+
     // ESAC control[3] ? [127:0] = 0
     __m256i swapz = _mm256_permute2x128_si256(a.val, a.val, _MM_SHUFFLE(2, 0, 0, 1));
-
-    if (imm == 0)
-        return a;
-    if (imm == 16)
-        res.val = swapz;
-    else if (imm < 16)
-        res.val = _mm256_alignr_epi8(swapz, a.val, imm);
-    else if (imm < 32)
-        res.val = _mm256_srli_si256(swapz, imm - 16);
-    else
-        return v_uint8x32();
-    return res;
-}
-
-#define OPENCV_HAL_IMPL_AVX_ROTATE_CAST(intrin, _Tpvec, cast)   \
-    template<int imm>                                           \
-    inline _Tpvec intrin(const _Tpvec& a, const _Tpvec& b)      \
-    {                                                           \
-        const int w = sizeof(typename _Tpvec::lane_type);       \
-        v_uint8x32 ret = intrin<imm*w>(v_reinterpret_as_u8(a),  \
-                                       v_reinterpret_as_u8(b)); \
-        return _Tpvec(cast(ret.val));                           \
-    }                                                           \
-    template<int imm>                                           \
-    inline _Tpvec intrin(const _Tpvec& a)                       \
-    {                                                           \
-        const int w = sizeof(typename _Tpvec::lane_type);       \
-        v_uint8x32 ret = intrin<imm*w>(v_reinterpret_as_u8(a)); \
-        return _Tpvec(cast(ret.val));                           \
+    if (imm == 16) return v_uint8x32(swapz);
+    if (imm < 16)  return v_uint8x32(_mm256_alignr_epi8(swapz, a.val, imm));
+    return v_uint8x32(_mm256_srli_si256(swapz, IMM_L));
+}
+
+#define OPENCV_HAL_IMPL_AVX_ROTATE_CAST(intrin, _Tpvec, cast)     \
+    template<int imm>                                             \
+    inline _Tpvec intrin(const _Tpvec& a, const _Tpvec& b)        \
+    {                                                             \
+        enum {IMMxW = imm * sizeof(typename _Tpvec::lane_type)};  \
+        v_uint8x32 ret = intrin<IMMxW>(v_reinterpret_as_u8(a),    \
+                                       v_reinterpret_as_u8(b));   \
+        return _Tpvec(cast(ret.val));                             \
+    }                                                             \
+    template<int imm>                                             \
+    inline _Tpvec intrin(const _Tpvec& a)                         \
+    {                                                             \
+        enum {IMMxW = imm * sizeof(typename _Tpvec::lane_type)};  \
+        v_uint8x32 ret = intrin<IMMxW>(v_reinterpret_as_u8(a));   \
+        return _Tpvec(cast(ret.val));                             \
     }
 
 #define OPENCV_HAL_IMPL_AVX_ROTATE(_Tpvec)                                  \
@@ -1616,7 +1629,7 @@ inline void v_load_deinterleave( const uchar* ptr, v_uint8x32& a, v_uint8x32& b
     __m256i ab0 = _mm256_loadu_si256((const __m256i*)ptr);
     __m256i ab1 = _mm256_loadu_si256((const __m256i*)(ptr + 32));
 
-    static const __m256i sh = _mm256_setr_epi8(0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15,
+    const __m256i sh = _mm256_setr_epi8(0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15,
                                                0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15);
     __m256i p0 = _mm256_shuffle_epi8(ab0, sh);
     __m256i p1 = _mm256_shuffle_epi8(ab1, sh);
@@ -1633,7 +1646,7 @@ inline void v_load_deinterleave( const ushort* ptr, v_uint16x16& a, v_uint16x16&
     __m256i ab0 = _mm256_loadu_si256((const __m256i*)ptr);
     __m256i ab1 = _mm256_loadu_si256((const __m256i*)(ptr + 16));
 
-    static const __m256i sh = _mm256_setr_epi8(0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15,
+    const __m256i sh = _mm256_setr_epi8(0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15,
                                                0, 1, 4, 5, 8, 9, 12, 13, 2, 3, 6, 7, 10, 11, 14, 15);
     __m256i p0 = _mm256_shuffle_epi8(ab0, sh);
     __m256i p1 = _mm256_shuffle_epi8(ab1, sh);
@@ -1683,16 +1696,16 @@ inline void v_load_deinterleave( const uchar* ptr, v_uint8x32& b, v_uint8x32& g,
     __m256i s02_low = _mm256_permute2x128_si256(bgr0, bgr2, 0 + 2*16);
     __m256i s02_high = _mm256_permute2x128_si256(bgr0, bgr2, 1 + 3*16);
 
-    static const __m256i m0 = _mm256_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0,
+    const __m256i m0 = _mm256_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0,
                                                0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
-    static const __m256i m1 = _mm256_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0,
+    const __m256i m1 = _mm256_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0,
                                                -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1);
 
     __m256i b0 = _mm256_blendv_epi8(_mm256_blendv_epi8(s02_low, s02_high, m0), bgr1, m1);
     __m256i g0 = _mm256_blendv_epi8(_mm256_blendv_epi8(s02_high, s02_low, m1), bgr1, m0);
     __m256i r0 = _mm256_blendv_epi8(_mm256_blendv_epi8(bgr1, s02_low, m0), s02_high, m1);
 
-    static const __m256i
+    const __m256i
     sh_b = _mm256_setr_epi8(0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14, 1, 4, 7, 10, 13,
                             0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14, 1, 4, 7, 10, 13),
     sh_g = _mm256_setr_epi8(1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14,
@@ -1717,18 +1730,18 @@ inline void v_load_deinterleave( const ushort* ptr, v_uint16x16& b, v_uint16x16&
     __m256i s02_low = _mm256_permute2x128_si256(bgr0, bgr2, 0 + 2*16);
     __m256i s02_high = _mm256_permute2x128_si256(bgr0, bgr2, 1 + 3*16);
 
-    static const __m256i m0 = _mm256_setr_epi8(0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1,
+    const __m256i m0 = _mm256_setr_epi8(0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1,
                                                0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0);
-    static const __m256i m1 = _mm256_setr_epi8(0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0,
+    const __m256i m1 = _mm256_setr_epi8(0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0,
                                                -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0);
     __m256i b0 = _mm256_blendv_epi8(_mm256_blendv_epi8(s02_low, s02_high, m0), bgr1, m1);
     __m256i g0 = _mm256_blendv_epi8(_mm256_blendv_epi8(bgr1, s02_low, m0), s02_high, m1);
     __m256i r0 = _mm256_blendv_epi8(_mm256_blendv_epi8(s02_high, s02_low, m1), bgr1, m0);
-    static const __m256i sh_b = _mm256_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11,
+    const __m256i sh_b = _mm256_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11,
                                                  0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
-    static const __m256i sh_g = _mm256_setr_epi8(2, 3, 8, 9, 14, 15, 4, 5, 10, 11, 0, 1, 6, 7, 12, 13,
+    const __m256i sh_g = _mm256_setr_epi8(2, 3, 8, 9, 14, 15, 4, 5, 10, 11, 0, 1, 6, 7, 12, 13,
                                                  2, 3, 8, 9, 14, 15, 4, 5, 10, 11, 0, 1, 6, 7, 12, 13);
-    static const __m256i sh_r = _mm256_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15,
+    const __m256i sh_r = _mm256_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15,
                                                  4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
     b0 = _mm256_shuffle_epi8(b0, sh_b);
     g0 = _mm256_shuffle_epi8(g0, sh_g);
@@ -1785,7 +1798,7 @@ inline void v_load_deinterleave( const uchar* ptr, v_uint8x32& b, v_uint8x32& g,
     __m256i bgr1 = _mm256_loadu_si256((const __m256i*)(ptr + 32));
     __m256i bgr2 = _mm256_loadu_si256((const __m256i*)(ptr + 64));
     __m256i bgr3 = _mm256_loadu_si256((const __m256i*)(ptr + 96));
-    static const __m256i sh = _mm256_setr_epi8(0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15,
+    const __m256i sh = _mm256_setr_epi8(0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15,
                                                0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15);
 
     __m256i p0 = _mm256_shuffle_epi8(bgr0, sh);
@@ -1820,7 +1833,7 @@ inline void v_load_deinterleave( const ushort* ptr, v_uint16x16& b, v_uint16x16&
     __m256i bgr1 = _mm256_loadu_si256((const __m256i*)(ptr + 16));
     __m256i bgr2 = _mm256_loadu_si256((const __m256i*)(ptr + 32));
     __m256i bgr3 = _mm256_loadu_si256((const __m256i*)(ptr + 48));
-    static const __m256i sh = _mm256_setr_epi8(0, 1, 8, 9, 2, 3, 10, 11, 4, 5, 12, 13, 6, 7, 14, 15,
+    const __m256i sh = _mm256_setr_epi8(0, 1, 8, 9, 2, 3, 10, 11, 4, 5, 12, 13, 6, 7, 14, 15,
                                                0, 1, 8, 9, 2, 3, 10, 11, 4, 5, 12, 13, 6, 7, 14, 15);
     __m256i p0 = _mm256_shuffle_epi8(bgr0, sh);
     __m256i p1 = _mm256_shuffle_epi8(bgr1, sh);
@@ -1901,7 +1914,8 @@ inline void v_load_deinterleave( const uint64* ptr, v_uint64x4& b, v_uint64x4& g
 
 ///////////////////////////// store interleave /////////////////////////////////////
 
-inline void v_store_interleave( uchar* ptr, const v_uint8x32& x, const v_uint8x32& y )
+inline void v_store_interleave( uchar* ptr, const v_uint8x32& x, const v_uint8x32& y,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i xy_l = _mm256_unpacklo_epi8(x.val, y.val);
     __m256i xy_h = _mm256_unpackhi_epi8(x.val, y.val);
@@ -1909,11 +1923,25 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x32& x, const v_uint8x3
     __m256i xy0 = _mm256_permute2x128_si256(xy_l, xy_h, 0 + 2*16);
     __m256i xy1 = _mm256_permute2x128_si256(xy_l, xy_h, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, xy0);
-    _mm256_storeu_si256((__m256i*)(ptr + 32), xy1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, xy0);
+        _mm256_stream_si256((__m256i*)(ptr + 32), xy1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, xy0);
+        _mm256_store_si256((__m256i*)(ptr + 32), xy1);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, xy0);
+        _mm256_storeu_si256((__m256i*)(ptr + 32), xy1);
+    }
 }
 
-inline void v_store_interleave( ushort* ptr, const v_uint16x16& x, const v_uint16x16& y )
+inline void v_store_interleave( ushort* ptr, const v_uint16x16& x, const v_uint16x16& y,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i xy_l = _mm256_unpacklo_epi16(x.val, y.val);
     __m256i xy_h = _mm256_unpackhi_epi16(x.val, y.val);
@@ -1921,11 +1949,25 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x16& x, const v_uint1
     __m256i xy0 = _mm256_permute2x128_si256(xy_l, xy_h, 0 + 2*16);
     __m256i xy1 = _mm256_permute2x128_si256(xy_l, xy_h, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, xy0);
-    _mm256_storeu_si256((__m256i*)(ptr + 16), xy1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, xy0);
+        _mm256_stream_si256((__m256i*)(ptr + 16), xy1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, xy0);
+        _mm256_store_si256((__m256i*)(ptr + 16), xy1);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, xy0);
+        _mm256_storeu_si256((__m256i*)(ptr + 16), xy1);
+    }
 }
 
-inline void v_store_interleave( unsigned* ptr, const v_uint32x8& x, const v_uint32x8& y )
+inline void v_store_interleave( unsigned* ptr, const v_uint32x8& x, const v_uint32x8& y,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i xy_l = _mm256_unpacklo_epi32(x.val, y.val);
     __m256i xy_h = _mm256_unpackhi_epi32(x.val, y.val);
@@ -1933,11 +1975,25 @@ inline void v_store_interleave( unsigned* ptr, const v_uint32x8& x, const v_uint
     __m256i xy0 = _mm256_permute2x128_si256(xy_l, xy_h, 0 + 2*16);
     __m256i xy1 = _mm256_permute2x128_si256(xy_l, xy_h, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, xy0);
-    _mm256_storeu_si256((__m256i*)(ptr + 8), xy1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, xy0);
+        _mm256_stream_si256((__m256i*)(ptr + 8), xy1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, xy0);
+        _mm256_store_si256((__m256i*)(ptr + 8), xy1);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, xy0);
+        _mm256_storeu_si256((__m256i*)(ptr + 8), xy1);
+    }
 }
 
-inline void v_store_interleave( uint64* ptr, const v_uint64x4& x, const v_uint64x4& y )
+inline void v_store_interleave( uint64* ptr, const v_uint64x4& x, const v_uint64x4& y,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i xy_l = _mm256_unpacklo_epi64(x.val, y.val);
     __m256i xy_h = _mm256_unpackhi_epi64(x.val, y.val);
@@ -1945,19 +2001,33 @@ inline void v_store_interleave( uint64* ptr, const v_uint64x4& x, const v_uint64
     __m256i xy0 = _mm256_permute2x128_si256(xy_l, xy_h, 0 + 2*16);
     __m256i xy1 = _mm256_permute2x128_si256(xy_l, xy_h, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, xy0);
-    _mm256_storeu_si256((__m256i*)(ptr + 4), xy1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, xy0);
+        _mm256_stream_si256((__m256i*)(ptr + 4), xy1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, xy0);
+        _mm256_store_si256((__m256i*)(ptr + 4), xy1);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, xy0);
+        _mm256_storeu_si256((__m256i*)(ptr + 4), xy1);
+    }
 }
 
-inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x32& g, const v_uint8x32& r )
+inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x32& g, const v_uint8x32& r,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
-    static const __m256i sh_b = _mm256_setr_epi8(
+    const __m256i sh_b = _mm256_setr_epi8(
             0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10, 5,
             0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10, 5);
-    static const __m256i sh_g = _mm256_setr_epi8(
+    const __m256i sh_g = _mm256_setr_epi8(
             5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10,
             5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10);
-    static const __m256i sh_r = _mm256_setr_epi8(
+    const __m256i sh_r = _mm256_setr_epi8(
             10, 5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15,
             10, 5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15);
 
@@ -1965,9 +2035,9 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x3
     __m256i g0 = _mm256_shuffle_epi8(g.val, sh_g);
     __m256i r0 = _mm256_shuffle_epi8(r.val, sh_r);
 
-    static const __m256i m0 = _mm256_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0,
+    const __m256i m0 = _mm256_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0,
                                                0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
-    static const __m256i m1 = _mm256_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0,
+    const __m256i m1 = _mm256_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0,
                                                0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0);
 
     __m256i p0 = _mm256_blendv_epi8(_mm256_blendv_epi8(b0, g0, m0), r0, m1);
@@ -1978,20 +2048,36 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x3
     __m256i bgr1 = _mm256_permute2x128_si256(p2, p0, 0 + 3*16);
     __m256i bgr2 = _mm256_permute2x128_si256(p1, p2, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgr0);
-    _mm256_storeu_si256((__m256i*)(ptr + 32), bgr1);
-    _mm256_storeu_si256((__m256i*)(ptr + 64), bgr2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgr0);
+        _mm256_stream_si256((__m256i*)(ptr + 32), bgr1);
+        _mm256_stream_si256((__m256i*)(ptr + 64), bgr2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgr0);
+        _mm256_store_si256((__m256i*)(ptr + 32), bgr1);
+        _mm256_store_si256((__m256i*)(ptr + 64), bgr2);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgr0);
+        _mm256_storeu_si256((__m256i*)(ptr + 32), bgr1);
+        _mm256_storeu_si256((__m256i*)(ptr + 64), bgr2);
+    }
 }
 
-inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint16x16& g, const v_uint16x16& r )
+inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint16x16& g, const v_uint16x16& r,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
-    static const __m256i sh_b = _mm256_setr_epi8(
+    const __m256i sh_b = _mm256_setr_epi8(
          0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11,
          0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
-    static const __m256i sh_g = _mm256_setr_epi8(
+    const __m256i sh_g = _mm256_setr_epi8(
          10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5,
          10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5);
-    static const __m256i sh_r = _mm256_setr_epi8(
+    const __m256i sh_r = _mm256_setr_epi8(
          4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15,
          4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
 
@@ -1999,9 +2085,9 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint1
     __m256i g0 = _mm256_shuffle_epi8(g.val, sh_g);
     __m256i r0 = _mm256_shuffle_epi8(r.val, sh_r);
 
-    static const __m256i m0 = _mm256_setr_epi8(0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1,
+    const __m256i m0 = _mm256_setr_epi8(0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1,
                                                0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0);
-    static const __m256i m1 = _mm256_setr_epi8(0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0,
+    const __m256i m1 = _mm256_setr_epi8(0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0,
                                                -1, -1, 0, 0, 0, 0, -1, -1, 0, 0, 0, 0, -1, -1, 0, 0);
 
     __m256i p0 = _mm256_blendv_epi8(_mm256_blendv_epi8(b0, g0, m0), r0, m1);
@@ -2012,12 +2098,28 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint1
     //__m256i bgr1 = p1;
     __m256i bgr2 = _mm256_permute2x128_si256(p0, p2, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgr0);
-    _mm256_storeu_si256((__m256i*)(ptr + 16), p1);
-    _mm256_storeu_si256((__m256i*)(ptr + 32), bgr2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgr0);
+        _mm256_stream_si256((__m256i*)(ptr + 16), p1);
+        _mm256_stream_si256((__m256i*)(ptr + 32), bgr2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgr0);
+        _mm256_store_si256((__m256i*)(ptr + 16), p1);
+        _mm256_store_si256((__m256i*)(ptr + 32), bgr2);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgr0);
+        _mm256_storeu_si256((__m256i*)(ptr + 16), p1);
+        _mm256_storeu_si256((__m256i*)(ptr + 32), bgr2);
+    }
 }
 
-inline void v_store_interleave( unsigned* ptr, const v_uint32x8& b, const v_uint32x8& g, const v_uint32x8& r )
+inline void v_store_interleave( unsigned* ptr, const v_uint32x8& b, const v_uint32x8& g, const v_uint32x8& r,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i b0 = _mm256_shuffle_epi32(b.val, 0x6c);
     __m256i g0 = _mm256_shuffle_epi32(g.val, 0xb1);
@@ -2031,12 +2133,28 @@ inline void v_store_interleave( unsigned* ptr, const v_uint32x8& b, const v_uint
     //__m256i bgr1 = p2;
     __m256i bgr2 = _mm256_permute2x128_si256(p0, p1, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgr0);
-    _mm256_storeu_si256((__m256i*)(ptr + 8), p2);
-    _mm256_storeu_si256((__m256i*)(ptr + 16), bgr2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgr0);
+        _mm256_stream_si256((__m256i*)(ptr + 8), p2);
+        _mm256_stream_si256((__m256i*)(ptr + 16), bgr2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgr0);
+        _mm256_store_si256((__m256i*)(ptr + 8), p2);
+        _mm256_store_si256((__m256i*)(ptr + 16), bgr2);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgr0);
+        _mm256_storeu_si256((__m256i*)(ptr + 8), p2);
+        _mm256_storeu_si256((__m256i*)(ptr + 16), bgr2);
+    }
 }
 
-inline void v_store_interleave( uint64* ptr, const v_uint64x4& b, const v_uint64x4& g, const v_uint64x4& r )
+inline void v_store_interleave( uint64* ptr, const v_uint64x4& b, const v_uint64x4& g, const v_uint64x4& r,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i s01 = _mm256_unpacklo_epi64(b.val, g.val);
     __m256i s12 = _mm256_unpackhi_epi64(g.val, r.val);
@@ -2046,12 +2164,29 @@ inline void v_store_interleave( uint64* ptr, const v_uint64x4& b, const v_uint64
     __m256i bgr1 = _mm256_blend_epi32(s01, s12, 0x0f);
     __m256i bgr2 = _mm256_permute2x128_si256(s20, s12, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgr0);
-    _mm256_storeu_si256((__m256i*)(ptr + 4), bgr1);
-    _mm256_storeu_si256((__m256i*)(ptr + 8), bgr2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgr0);
+        _mm256_stream_si256((__m256i*)(ptr + 4), bgr1);
+        _mm256_stream_si256((__m256i*)(ptr + 8), bgr2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgr0);
+        _mm256_store_si256((__m256i*)(ptr + 4), bgr1);
+        _mm256_store_si256((__m256i*)(ptr + 8), bgr2);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgr0);
+        _mm256_storeu_si256((__m256i*)(ptr + 4), bgr1);
+        _mm256_storeu_si256((__m256i*)(ptr + 8), bgr2);
+    }
 }
 
-inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x32& g, const v_uint8x32& r, const v_uint8x32& a )
+inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x32& g,
+                                const v_uint8x32& r, const v_uint8x32& a,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i bg0 = _mm256_unpacklo_epi8(b.val, g.val);
     __m256i bg1 = _mm256_unpackhi_epi8(b.val, g.val);
@@ -2068,14 +2203,32 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x32& b, const v_uint8x3
     __m256i bgra1 = _mm256_permute2x128_si256(bgra2_, bgra3_, 0 + 2*16);
     __m256i bgra3 = _mm256_permute2x128_si256(bgra2_, bgra3_, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgra0);
-    _mm256_storeu_si256((__m256i*)(ptr + 32), bgra1);
-    _mm256_storeu_si256((__m256i*)(ptr + 64), bgra2);
-    _mm256_storeu_si256((__m256i*)(ptr + 96), bgra3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgra0);
+        _mm256_stream_si256((__m256i*)(ptr + 32), bgra1);
+        _mm256_stream_si256((__m256i*)(ptr + 64), bgra2);
+        _mm256_stream_si256((__m256i*)(ptr + 96), bgra3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgra0);
+        _mm256_store_si256((__m256i*)(ptr + 32), bgra1);
+        _mm256_store_si256((__m256i*)(ptr + 64), bgra2);
+        _mm256_store_si256((__m256i*)(ptr + 96), bgra3);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgra0);
+        _mm256_storeu_si256((__m256i*)(ptr + 32), bgra1);
+        _mm256_storeu_si256((__m256i*)(ptr + 64), bgra2);
+        _mm256_storeu_si256((__m256i*)(ptr + 96), bgra3);
+    }
 }
 
 inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint16x16& g,
-                                const v_uint16x16& r, const v_uint16x16& a )
+                                const v_uint16x16& r, const v_uint16x16& a,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i bg0 = _mm256_unpacklo_epi16(b.val, g.val);
     __m256i bg1 = _mm256_unpackhi_epi16(b.val, g.val);
@@ -2092,14 +2245,32 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x16& b, const v_uint1
     __m256i bgra1 = _mm256_permute2x128_si256(bgra2_, bgra3_, 0 + 2*16);
     __m256i bgra3 = _mm256_permute2x128_si256(bgra2_, bgra3_, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgra0);
-    _mm256_storeu_si256((__m256i*)(ptr + 16), bgra1);
-    _mm256_storeu_si256((__m256i*)(ptr + 32), bgra2);
-    _mm256_storeu_si256((__m256i*)(ptr + 48), bgra3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgra0);
+        _mm256_stream_si256((__m256i*)(ptr + 16), bgra1);
+        _mm256_stream_si256((__m256i*)(ptr + 32), bgra2);
+        _mm256_stream_si256((__m256i*)(ptr + 48), bgra3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgra0);
+        _mm256_store_si256((__m256i*)(ptr + 16), bgra1);
+        _mm256_store_si256((__m256i*)(ptr + 32), bgra2);
+        _mm256_store_si256((__m256i*)(ptr + 48), bgra3);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgra0);
+        _mm256_storeu_si256((__m256i*)(ptr + 16), bgra1);
+        _mm256_storeu_si256((__m256i*)(ptr + 32), bgra2);
+        _mm256_storeu_si256((__m256i*)(ptr + 48), bgra3);
+    }
 }
 
 inline void v_store_interleave( unsigned* ptr, const v_uint32x8& b, const v_uint32x8& g,
-                                const v_uint32x8& r, const v_uint32x8& a )
+                                const v_uint32x8& r, const v_uint32x8& a,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i bg0 = _mm256_unpacklo_epi32(b.val, g.val);
     __m256i bg1 = _mm256_unpackhi_epi32(b.val, g.val);
@@ -2116,14 +2287,32 @@ inline void v_store_interleave( unsigned* ptr, const v_uint32x8& b, const v_uint
     __m256i bgra1 = _mm256_permute2x128_si256(bgra2_, bgra3_, 0 + 2*16);
     __m256i bgra3 = _mm256_permute2x128_si256(bgra2_, bgra3_, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgra0);
-    _mm256_storeu_si256((__m256i*)(ptr + 8), bgra1);
-    _mm256_storeu_si256((__m256i*)(ptr + 16), bgra2);
-    _mm256_storeu_si256((__m256i*)(ptr + 24), bgra3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgra0);
+        _mm256_stream_si256((__m256i*)(ptr + 8), bgra1);
+        _mm256_stream_si256((__m256i*)(ptr + 16), bgra2);
+        _mm256_stream_si256((__m256i*)(ptr + 24), bgra3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgra0);
+        _mm256_store_si256((__m256i*)(ptr + 8), bgra1);
+        _mm256_store_si256((__m256i*)(ptr + 16), bgra2);
+        _mm256_store_si256((__m256i*)(ptr + 24), bgra3);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgra0);
+        _mm256_storeu_si256((__m256i*)(ptr + 8), bgra1);
+        _mm256_storeu_si256((__m256i*)(ptr + 16), bgra2);
+        _mm256_storeu_si256((__m256i*)(ptr + 24), bgra3);
+    }
 }
 
 inline void v_store_interleave( uint64* ptr, const v_uint64x4& b, const v_uint64x4& g,
-                                const v_uint64x4& r, const v_uint64x4& a )
+                                const v_uint64x4& r, const v_uint64x4& a,
+                                hal::StoreMode mode=hal::STORE_UNALIGNED )
 {
     __m256i bg0 = _mm256_unpacklo_epi64(b.val, g.val);
     __m256i bg1 = _mm256_unpackhi_epi64(b.val, g.val);
@@ -2135,10 +2324,27 @@ inline void v_store_interleave( uint64* ptr, const v_uint64x4& b, const v_uint64
     __m256i bgra2 = _mm256_permute2x128_si256(bg0, ra0, 1 + 3*16);
     __m256i bgra3 = _mm256_permute2x128_si256(bg1, ra1, 1 + 3*16);
 
-    _mm256_storeu_si256((__m256i*)ptr, bgra0);
-    _mm256_storeu_si256((__m256i*)(ptr + 4), bgra1);
-    _mm256_storeu_si256((__m256i*)(ptr + 8), bgra2);
-    _mm256_storeu_si256((__m256i*)(ptr + 12), bgra3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm256_stream_si256((__m256i*)ptr, bgra0);
+        _mm256_stream_si256((__m256i*)(ptr + 4), bgra1);
+        _mm256_stream_si256((__m256i*)(ptr + 8), bgra2);
+        _mm256_stream_si256((__m256i*)(ptr + 12), bgra3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm256_store_si256((__m256i*)ptr, bgra0);
+        _mm256_store_si256((__m256i*)(ptr + 4), bgra1);
+        _mm256_store_si256((__m256i*)(ptr + 8), bgra2);
+        _mm256_store_si256((__m256i*)(ptr + 12), bgra3);
+    }
+    else
+    {
+        _mm256_storeu_si256((__m256i*)ptr, bgra0);
+        _mm256_storeu_si256((__m256i*)(ptr + 4), bgra1);
+        _mm256_storeu_si256((__m256i*)(ptr + 8), bgra2);
+        _mm256_storeu_si256((__m256i*)(ptr + 12), bgra3);
+    }
 }
 
 #define OPENCV_HAL_IMPL_AVX_LOADSTORE_INTERLEAVE(_Tpvec0, _Tp0, suffix0, _Tpvec1, _Tp1, suffix1) \
@@ -2166,27 +2372,30 @@ inline void v_load_deinterleave( const _Tp0* ptr, _Tpvec0& a0, _Tpvec0& b0, _Tpv
     c0 = v_reinterpret_as_##suffix0(c1); \
     d0 = v_reinterpret_as_##suffix0(d1); \
 } \
-inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0 ) \
+inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, \
+                                hal::StoreMode mode=hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1);      \
+    v_store_interleave((_Tp1*)ptr, a1, b1, mode);      \
 } \
-inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, const _Tpvec0& c0 ) \
+inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, const _Tpvec0& c0, \
+                                hal::StoreMode mode=hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
     _Tpvec1 c1 = v_reinterpret_as_##suffix1(c0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1, c1);  \
+    v_store_interleave((_Tp1*)ptr, a1, b1, c1, mode);  \
 } \
 inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, \
-                                const _Tpvec0& c0, const _Tpvec0& d0 ) \
+                                const _Tpvec0& c0, const _Tpvec0& d0, \
+                                hal::StoreMode mode=hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
     _Tpvec1 c1 = v_reinterpret_as_##suffix1(c0); \
     _Tpvec1 d1 = v_reinterpret_as_##suffix1(d0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1, c1, d1); \
+    v_store_interleave((_Tp1*)ptr, a1, b1, c1, d1, mode); \
 }
 
 OPENCV_HAL_IMPL_AVX_LOADSTORE_INTERLEAVE(v_int8x32, schar, s8, v_uint8x32, uchar, u8)
diff --git a/modules/core/include/opencv2/core/hal/intrin_cpp.hpp b/modules/core/include/opencv2/core/hal/intrin_cpp.hpp
index 1f5f53100a..61d58dbb06 100644
--- a/modules/core/include/opencv2/core/hal/intrin_cpp.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_cpp.hpp
@@ -1319,7 +1319,8 @@ Scheme:
 For all types except 64-bit. */
 template<typename _Tp, int n>
 inline void v_store_interleave( _Tp* ptr, const v_reg<_Tp, n>& a,
-                               const v_reg<_Tp, n>& b)
+                               const v_reg<_Tp, n>& b,
+                               hal::StoreMode /*mode*/=hal::STORE_UNALIGNED)
 {
     int i, i2;
     for( i = i2 = 0; i < n; i++, i2 += 2 )
@@ -1339,7 +1340,8 @@ Scheme:
 For all types except 64-bit. */
 template<typename _Tp, int n>
 inline void v_store_interleave( _Tp* ptr, const v_reg<_Tp, n>& a,
-                                const v_reg<_Tp, n>& b, const v_reg<_Tp, n>& c)
+                                const v_reg<_Tp, n>& b, const v_reg<_Tp, n>& c,
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED)
 {
     int i, i3;
     for( i = i3 = 0; i < n; i++, i3 += 3 )
@@ -1360,7 +1362,8 @@ Scheme:
 For all types except 64-bit. */
 template<typename _Tp, int n> inline void v_store_interleave( _Tp* ptr, const v_reg<_Tp, n>& a,
                                                             const v_reg<_Tp, n>& b, const v_reg<_Tp, n>& c,
-                                                            const v_reg<_Tp, n>& d)
+                                                            const v_reg<_Tp, n>& d,
+                                                            hal::StoreMode /*mode*/=hal::STORE_UNALIGNED)
 {
     int i, i4;
     for( i = i4 = 0; i < n; i++, i4 += 4 )
@@ -1430,6 +1433,20 @@ inline void v_store_aligned(_Tp* ptr, const v_reg<_Tp, n>& a)
         ptr[i] = a.s[i];
 }
 
+template<typename _Tp, int n>
+inline void v_store_aligned_nocache(_Tp* ptr, const v_reg<_Tp, n>& a)
+{
+    for( int i = 0; i < n; i++ )
+        ptr[i] = a.s[i];
+}
+
+template<typename _Tp, int n>
+inline void v_store_aligned(_Tp* ptr, const v_reg<_Tp, n>& a, hal::StoreMode /*mode*/)
+{
+    for( int i = 0; i < n; i++ )
+        ptr[i] = a.s[i];
+}
+
 /** @brief Combine vector from first elements of two vectors
 
 Scheme:
diff --git a/modules/core/include/opencv2/core/hal/intrin_neon.hpp b/modules/core/include/opencv2/core/hal/intrin_neon.hpp
index d8067306a5..73ca948e24 100644
--- a/modules/core/include/opencv2/core/hal/intrin_neon.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_neon.hpp
@@ -319,6 +319,9 @@ static inline void cv_vst1_f16(void* ptr, float16x4_t a)
 #endif
 }
 
+#ifndef vdup_n_f16
+    #define vdup_n_f16(v) (float16x4_t){v, v, v, v}
+#endif
 
 struct v_float16x8
 {
@@ -864,6 +867,10 @@ inline void v_store(_Tp* ptr, const _Tpvec& a) \
 { vst1q_##suffix(ptr, a.val); } \
 inline void v_store_aligned(_Tp* ptr, const _Tpvec& a) \
 { vst1q_##suffix(ptr, a.val); } \
+inline void v_store_aligned_nocache(_Tp* ptr, const _Tpvec& a) \
+{ vst1q_##suffix(ptr, a.val); } \
+inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode /*mode*/) \
+{ vst1q_##suffix(ptr, a.val); } \
 inline void v_store_low(_Tp* ptr, const _Tpvec& a) \
 { vst1_##suffix(ptr, vget_low_##suffix(a.val)); } \
 inline void v_store_high(_Tp* ptr, const _Tpvec& a) \
@@ -889,6 +896,11 @@ inline v_float16x8 v_load_f16(const short* ptr)
 inline v_float16x8 v_load_f16_aligned(const short* ptr)
 { return v_float16x8(cv_vld1q_f16(ptr)); }
 
+inline v_float16x8 v_load_f16_low(const short* ptr)
+{ return v_float16x8(vcombine_f16(cv_vld1_f16(ptr), vdup_n_f16((float16_t)0))); }
+inline v_float16x8 v_load_f16_halves(const short* ptr0, const short* ptr1)
+{ return v_float16x8(vcombine_f16(cv_vld1_f16(ptr0), cv_vld1_f16(ptr1))); }
+
 inline void v_store(short* ptr, const v_float16x8& a)
 { cv_vst1q_f16(ptr, a.val); }
 inline void v_store_aligned(short* ptr, const v_float16x8& a)
@@ -1292,14 +1304,16 @@ inline void v_load_deinterleave(const _Tp* ptr, v_##_Tpvec& a, v_##_Tpvec& b, \
     c.val = v.val[2]; \
     d.val = v.val[3]; \
 } \
-inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec& b) \
+inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec& b, \
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { \
     _Tpvec##x2_t v; \
     v.val[0] = a.val; \
     v.val[1] = b.val; \
     vst2q_##suffix(ptr, v); \
 } \
-inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec& b, const v_##_Tpvec& c) \
+inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec& b, \
+                                const v_##_Tpvec& c, hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { \
     _Tpvec##x3_t v; \
     v.val[0] = a.val; \
@@ -1308,7 +1322,8 @@ inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec&
     vst3q_##suffix(ptr, v); \
 } \
 inline void v_store_interleave( _Tp* ptr, const v_##_Tpvec& a, const v_##_Tpvec& b, \
-                               const v_##_Tpvec& c, const v_##_Tpvec& d) \
+                                const v_##_Tpvec& c, const v_##_Tpvec& d, \
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED ) \
 { \
     _Tpvec##x4_t v; \
     v.val[0] = a.val; \
@@ -1360,7 +1375,8 @@ inline void v_load_deinterleave( const tp* ptr, v_##tp##x2& a, v_##tp##x2& b, \
     d = v_##tp##x2(vcombine_##suffix(d0, d1)); \
 } \
  \
-inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, const v_##tp##x2& b ) \
+inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, const v_##tp##x2& b, \
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { \
     vst1_##suffix(ptr, vget_low_##suffix(a.val)); \
     vst1_##suffix(ptr + 1, vget_low_##suffix(b.val)); \
@@ -1369,7 +1385,8 @@ inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, const v_##tp##x2&
 } \
  \
 inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, \
-                                const v_##tp##x2& b, const v_##tp##x2& c ) \
+                                const v_##tp##x2& b, const v_##tp##x2& c, \
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { \
     vst1_##suffix(ptr, vget_low_##suffix(a.val)); \
     vst1_##suffix(ptr + 1, vget_low_##suffix(b.val)); \
@@ -1380,7 +1397,8 @@ inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, \
 } \
  \
 inline void v_store_interleave( tp* ptr, const v_##tp##x2& a, const v_##tp##x2& b, \
-                                const v_##tp##x2& c, const v_##tp##x2& d ) \
+                                const v_##tp##x2& c, const v_##tp##x2& d, \
+                                hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { \
     vst1_##suffix(ptr, vget_low_##suffix(a.val)); \
     vst1_##suffix(ptr + 1, vget_low_##suffix(b.val)); \
diff --git a/modules/core/include/opencv2/core/hal/intrin_sse.hpp b/modules/core/include/opencv2/core/hal/intrin_sse.hpp
index 4971c777e4..d1f24d17b5 100644
--- a/modules/core/include/opencv2/core/hal/intrin_sse.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_sse.hpp
@@ -788,7 +788,7 @@ inline v_float32x4 v_sqrt(const v_float32x4& x)
 
 inline v_float32x4 v_invsqrt(const v_float32x4& x)
 {
-    static const __m128 _0_5 = _mm_set1_ps(0.5f), _1_5 = _mm_set1_ps(1.5f);
+    const __m128 _0_5 = _mm_set1_ps(0.5f), _1_5 = _mm_set1_ps(1.5f);
     __m128 t = x.val;
     __m128 h = _mm_mul_ps(t, _0_5);
     t = _mm_rsqrt_ps(t);
@@ -801,7 +801,7 @@ inline v_float64x2 v_sqrt(const v_float64x2& x)
 
 inline v_float64x2 v_invsqrt(const v_float64x2& x)
 {
-    static const __m128d v_1 = _mm_set1_pd(1.);
+    const __m128d v_1 = _mm_set1_pd(1.);
     return v_float64x2(_mm_div_pd(v_1, _mm_sqrt_pd(x.val)));
 }
 
@@ -1261,6 +1261,17 @@ inline void v_store(_Tp* ptr, const _Tpvec& a) \
 { _mm_storeu_si128((__m128i*)ptr, a.val); } \
 inline void v_store_aligned(_Tp* ptr, const _Tpvec& a) \
 { _mm_store_si128((__m128i*)ptr, a.val); } \
+inline void v_store_aligned_nocache(_Tp* ptr, const _Tpvec& a) \
+{ _mm_stream_si128((__m128i*)ptr, a.val); } \
+inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode mode) \
+{ \
+    if( mode == hal::STORE_UNALIGNED ) \
+        _mm_storeu_si128((__m128i*)ptr, a.val); \
+    else if( mode == hal::STORE_ALIGNED_NOCACHE )  \
+        _mm_stream_si128((__m128i*)ptr, a.val); \
+    else \
+        _mm_store_si128((__m128i*)ptr, a.val); \
+} \
 inline void v_store_low(_Tp* ptr, const _Tpvec& a) \
 { _mm_storel_epi64((__m128i*)ptr, a.val); } \
 inline void v_store_high(_Tp* ptr, const _Tpvec& a) \
@@ -1292,6 +1303,17 @@ inline void v_store(_Tp* ptr, const _Tpvec& a) \
 { _mm_storeu_##suffix(ptr, a.val); } \
 inline void v_store_aligned(_Tp* ptr, const _Tpvec& a) \
 { _mm_store_##suffix(ptr, a.val); } \
+inline void v_store_aligned_nocache(_Tp* ptr, const _Tpvec& a) \
+{ _mm_stream_##suffix(ptr, a.val); } \
+inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode mode) \
+{ \
+    if( mode == hal::STORE_UNALIGNED ) \
+        _mm_storeu_##suffix(ptr, a.val); \
+    else if( mode == hal::STORE_ALIGNED_NOCACHE )  \
+        _mm_stream_##suffix(ptr, a.val); \
+    else \
+        _mm_store_##suffix(ptr, a.val); \
+} \
 inline void v_store_low(_Tp* ptr, const _Tpvec& a) \
 { _mm_storel_epi64((__m128i*)ptr, _mm_cast##suffix##_si128(a.val)); } \
 inline void v_store_high(_Tp* ptr, const _Tpvec& a) \
@@ -1308,6 +1330,11 @@ inline v_float16x8 v_load_f16(const short* ptr)
 inline v_float16x8 v_load_f16_aligned(const short* ptr)
 { return v_float16x8(_mm_load_si128((const __m128i*)ptr)); }
 
+inline v_float16x8 v_load_f16_low(const short* ptr)
+{ return v_float16x8(v_load_low(ptr).val); }
+inline v_float16x8 v_load_f16_halves(const short* ptr0, const short* ptr1)
+{ return v_float16x8(v_load_halves(ptr0, ptr1).val); }
+
 inline void v_store(short* ptr, const v_float16x8& a)
 { _mm_storeu_si128((__m128i*)ptr, a.val); }
 inline void v_store_aligned(short* ptr, const v_float16x8& a)
@@ -1671,17 +1698,17 @@ inline void v_load_deinterleave(const uchar* ptr, v_uint8x16& a, v_uint8x16& b)
 inline void v_load_deinterleave(const uchar* ptr, v_uint8x16& a, v_uint8x16& b, v_uint8x16& c)
 {
 #if CV_SSE4_1
-    static const __m128i m0 = _mm_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0);
-    static const __m128i m1 = _mm_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
+    const __m128i m0 = _mm_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0);
+    const __m128i m1 = _mm_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
     __m128i s0 = _mm_loadu_si128((const __m128i*)ptr);
     __m128i s1 = _mm_loadu_si128((const __m128i*)(ptr + 16));
     __m128i s2 = _mm_loadu_si128((const __m128i*)(ptr + 32));
     __m128i a0 = _mm_blendv_epi8(_mm_blendv_epi8(s0, s1, m0), s2, m1);
     __m128i b0 = _mm_blendv_epi8(_mm_blendv_epi8(s1, s2, m0), s0, m1);
     __m128i c0 = _mm_blendv_epi8(_mm_blendv_epi8(s2, s0, m0), s1, m1);
-    static const __m128i sh_b = _mm_setr_epi8(0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14, 1, 4, 7, 10, 13);
-    static const __m128i sh_g = _mm_setr_epi8(1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14);
-    static const __m128i sh_r = _mm_setr_epi8(2, 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15);
+    const __m128i sh_b = _mm_setr_epi8(0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14, 1, 4, 7, 10, 13);
+    const __m128i sh_g = _mm_setr_epi8(1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14);
+    const __m128i sh_r = _mm_setr_epi8(2, 5, 8, 11, 14, 1, 4, 7, 10, 13, 0, 3, 6, 9, 12, 15);
     a0 = _mm_shuffle_epi8(a0, sh_b);
     b0 = _mm_shuffle_epi8(b0, sh_g);
     c0 = _mm_shuffle_epi8(c0, sh_r);
@@ -1689,9 +1716,9 @@ inline void v_load_deinterleave(const uchar* ptr, v_uint8x16& a, v_uint8x16& b,
     b.val = b0;
     c.val = c0;
 #elif CV_SSSE3
-    static const __m128i m0 = _mm_setr_epi8(0, 3, 6, 9, 12, 15, 1, 4, 7, 10, 13, 2, 5, 8, 11, 14);
-    static const __m128i m1 = _mm_alignr_epi8(m0, m0, 11);
-    static const __m128i m2 = _mm_alignr_epi8(m0, m0, 6);
+    const __m128i m0 = _mm_setr_epi8(0, 3, 6, 9, 12, 15, 1, 4, 7, 10, 13, 2, 5, 8, 11, 14);
+    const __m128i m1 = _mm_alignr_epi8(m0, m0, 11);
+    const __m128i m2 = _mm_alignr_epi8(m0, m0, 6);
 
     __m128i t0 = _mm_loadu_si128((const __m128i*)ptr);
     __m128i t1 = _mm_loadu_si128((const __m128i*)(ptr + 16));
@@ -1784,9 +1811,9 @@ inline void v_load_deinterleave(const ushort* ptr, v_uint16x8& a, v_uint16x8& b,
     __m128i b0 = _mm_blend_epi16(_mm_blend_epi16(v2, v0, 0x92), v1, 0x24);
     __m128i c0 = _mm_blend_epi16(_mm_blend_epi16(v1, v2, 0x92), v0, 0x24);
 
-    static const __m128i sh_a = _mm_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
-    static const __m128i sh_b = _mm_setr_epi8(2, 3, 8, 9, 14, 15, 4, 5, 10, 11, 0, 1, 6, 7, 12, 13);
-    static const __m128i sh_c = _mm_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
+    const __m128i sh_a = _mm_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
+    const __m128i sh_b = _mm_setr_epi8(2, 3, 8, 9, 14, 15, 4, 5, 10, 11, 0, 1, 6, 7, 12, 13);
+    const __m128i sh_c = _mm_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
     a0 = _mm_shuffle_epi8(a0, sh_a);
     b0 = _mm_shuffle_epi8(b0, sh_b);
     c0 = _mm_shuffle_epi8(c0, sh_c);
@@ -1955,55 +1982,61 @@ inline void v_load_deinterleave(const uint64 *ptr, v_uint64x2& a,
 
 // store interleave
 
-inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b)
+inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     __m128i v0 = _mm_unpacklo_epi8(a.val, b.val);
     __m128i v1 = _mm_unpackhi_epi8(a.val, b.val);
 
-    _mm_storeu_si128((__m128i*)(ptr), v0);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 16), v1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 16), v1);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 16), v1);
+    }
 }
 
 inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b,
-                                const v_uint8x16& c )
+                                const v_uint8x16& c, hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
 #if CV_SSE4_1
-    static const __m128i sh_a = _mm_setr_epi8(0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10, 5);
-    static const __m128i sh_b = _mm_setr_epi8(5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10);
-    static const __m128i sh_c = _mm_setr_epi8(10, 5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15);
+    const __m128i sh_a = _mm_setr_epi8(0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10, 5);
+    const __m128i sh_b = _mm_setr_epi8(5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10);
+    const __m128i sh_c = _mm_setr_epi8(10, 5, 0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15);
     __m128i a0 = _mm_shuffle_epi8(a.val, sh_a);
     __m128i b0 = _mm_shuffle_epi8(b.val, sh_b);
     __m128i c0 = _mm_shuffle_epi8(c.val, sh_c);
 
-    static const __m128i m0 = _mm_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0);
-    static const __m128i m1 = _mm_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
+    const __m128i m0 = _mm_setr_epi8(0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0);
+    const __m128i m1 = _mm_setr_epi8(0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0);
     __m128i v0 = _mm_blendv_epi8(_mm_blendv_epi8(a0, b0, m1), c0, m0);
     __m128i v1 = _mm_blendv_epi8(_mm_blendv_epi8(b0, c0, m1), a0, m0);
     __m128i v2 = _mm_blendv_epi8(_mm_blendv_epi8(c0, a0, m1), b0, m0);
-
-    _mm_storeu_si128((__m128i*)(ptr), v0);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 32), v2);
 #elif CV_SSSE3
-    static const __m128i m0 = _mm_setr_epi8(0, 6, 11, 1, 7, 12, 2, 8, 13, 3, 9, 14, 4, 10, 15, 5);
-    static const __m128i m1 = _mm_setr_epi8(5, 11, 0, 6, 12, 1, 7, 13, 2, 8, 14, 3, 9, 15, 4, 10);
-    static const __m128i m2 = _mm_setr_epi8(10, 0, 5, 11, 1, 6, 12, 2, 7, 13, 3, 8, 14, 4, 9, 15);
+    const __m128i m0 = _mm_setr_epi8(0, 6, 11, 1, 7, 12, 2, 8, 13, 3, 9, 14, 4, 10, 15, 5);
+    const __m128i m1 = _mm_setr_epi8(5, 11, 0, 6, 12, 1, 7, 13, 2, 8, 14, 3, 9, 15, 4, 10);
+    const __m128i m2 = _mm_setr_epi8(10, 0, 5, 11, 1, 6, 12, 2, 7, 13, 3, 8, 14, 4, 9, 15);
 
     __m128i t0 = _mm_alignr_epi8(b.val, _mm_slli_si128(a.val, 10), 5);
     t0 = _mm_alignr_epi8(c.val, t0, 5);
-    __m128i s0 = _mm_shuffle_epi8(t0, m0);
+    __m128i v0 = _mm_shuffle_epi8(t0, m0);
 
     __m128i t1 = _mm_alignr_epi8(_mm_srli_si128(b.val, 5), _mm_slli_si128(a.val, 5), 6);
     t1 = _mm_alignr_epi8(_mm_srli_si128(c.val, 5), t1, 5);
-    __m128i s1 = _mm_shuffle_epi8(t1, m1);
+    __m128i v1 = _mm_shuffle_epi8(t1, m1);
 
     __m128i t2 = _mm_alignr_epi8(_mm_srli_si128(c.val, 10), b.val, 11);
     t2 = _mm_alignr_epi8(t2, a.val, 11);
-    __m128i s2 = _mm_shuffle_epi8(t2, m2);
-
-    _mm_storeu_si128((__m128i*)ptr, s0);
-    _mm_storeu_si128((__m128i*)(ptr + 16), s1);
-    _mm_storeu_si128((__m128i*)(ptr + 32), s2);
+    __m128i v2 = _mm_shuffle_epi8(t2, m2);
 #else
     __m128i z = _mm_setzero_si128();
     __m128i ab0 = _mm_unpacklo_epi8(a.val, b.val);
@@ -2042,15 +2075,31 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x1
     __m128i v0 = _mm_or_si128(_mm_srli_si128(p40, 2), _mm_slli_si128(p41, 10));
     __m128i v1 = _mm_or_si128(_mm_srli_si128(p41, 6), _mm_slli_si128(p42, 6));
     __m128i v2 = _mm_or_si128(_mm_srli_si128(p42, 10), _mm_slli_si128(p43, 2));
-
-    _mm_storeu_si128((__m128i*)(ptr), v0);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 32), v2);
 #endif
+
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 16), v1);
+        _mm_stream_si128((__m128i*)(ptr + 32), v2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 16), v1);
+        _mm_store_si128((__m128i*)(ptr + 32), v2);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 16), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 32), v2);
+    }
 }
 
 inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x16& b,
-                                const v_uint8x16& c, const v_uint8x16& d)
+                                const v_uint8x16& c, const v_uint8x16& d,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     // a0 a1 a2 a3 ....
     // b0 b1 b2 b3 ....
@@ -2062,33 +2111,64 @@ inline void v_store_interleave( uchar* ptr, const v_uint8x16& a, const v_uint8x1
     __m128i u3 = _mm_unpackhi_epi8(b.val, d.val); // b8 d8 b9 d9 ...
 
     __m128i v0 = _mm_unpacklo_epi8(u0, u2); // a0 b0 c0 d0 ...
-    __m128i v1 = _mm_unpacklo_epi8(u1, u3); // a8 b8 c8 d8 ...
-    __m128i v2 = _mm_unpackhi_epi8(u0, u2); // a4 b4 c4 d4 ...
+    __m128i v1 = _mm_unpackhi_epi8(u0, u2); // a4 b4 c4 d4 ...
+    __m128i v2 = _mm_unpacklo_epi8(u1, u3); // a8 b8 c8 d8 ...
     __m128i v3 = _mm_unpackhi_epi8(u1, u3); // a12 b12 c12 d12 ...
 
-    _mm_storeu_si128((__m128i*)ptr, v0);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v2);
-    _mm_storeu_si128((__m128i*)(ptr + 32), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 48), v3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 16), v1);
+        _mm_stream_si128((__m128i*)(ptr + 32), v2);
+        _mm_stream_si128((__m128i*)(ptr + 48), v3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 16), v1);
+        _mm_store_si128((__m128i*)(ptr + 32), v2);
+        _mm_store_si128((__m128i*)(ptr + 48), v3);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 16), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 32), v2);
+        _mm_storeu_si128((__m128i*)(ptr + 48), v3);
+    }
 }
 
-inline void v_store_interleave( ushort* ptr, const v_uint16x8& a, const v_uint16x8& b )
+inline void v_store_interleave( ushort* ptr, const v_uint16x8& a, const v_uint16x8& b,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    __m128i t0, t1;
-    t0 = _mm_unpacklo_epi16(a.val, b.val);
-    t1 = _mm_unpackhi_epi16(a.val, b.val);
-    _mm_storeu_si128((__m128i*)(ptr), t0);
-    _mm_storeu_si128((__m128i*)(ptr + 8), t1);
+    __m128i v0 = _mm_unpacklo_epi16(a.val, b.val);
+    __m128i v1 = _mm_unpackhi_epi16(a.val, b.val);
+
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 8), v1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 8), v1);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 8), v1);
+    }
 }
 
 inline void v_store_interleave( ushort* ptr, const v_uint16x8& a,
-                                const v_uint16x8& b,
-                                const v_uint16x8& c )
+                                const v_uint16x8& b, const v_uint16x8& c,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
 #if CV_SSE4_1
-    static const __m128i sh_a = _mm_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
-    static const __m128i sh_b = _mm_setr_epi8(10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5);
-    static const __m128i sh_c = _mm_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
+    const __m128i sh_a = _mm_setr_epi8(0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5, 10, 11);
+    const __m128i sh_b = _mm_setr_epi8(10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15, 4, 5);
+    const __m128i sh_c = _mm_setr_epi8(4, 5, 10, 11, 0, 1, 6, 7, 12, 13, 2, 3, 8, 9, 14, 15);
     __m128i a0 = _mm_shuffle_epi8(a.val, sh_a);
     __m128i b0 = _mm_shuffle_epi8(b.val, sh_b);
     __m128i c0 = _mm_shuffle_epi8(c.val, sh_c);
@@ -2096,10 +2176,6 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x8& a,
     __m128i v0 = _mm_blend_epi16(_mm_blend_epi16(a0, b0, 0x92), c0, 0x24);
     __m128i v1 = _mm_blend_epi16(_mm_blend_epi16(c0, a0, 0x92), b0, 0x24);
     __m128i v2 = _mm_blend_epi16(_mm_blend_epi16(b0, c0, 0x92), a0, 0x24);
-
-    _mm_storeu_si128((__m128i*)ptr, v0);
-    _mm_storeu_si128((__m128i*)(ptr + 8), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v2);
 #else
     __m128i z = _mm_setzero_si128();
     __m128i ab0 = _mm_unpacklo_epi16(a.val, b.val);
@@ -2128,15 +2204,30 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x8& a,
     __m128i v0 = _mm_or_si128(_mm_srli_si128(p30, 2), _mm_slli_si128(p31, 10));
     __m128i v1 = _mm_or_si128(_mm_srli_si128(p31, 6), _mm_slli_si128(p32, 6));
     __m128i v2 = _mm_or_si128(_mm_srli_si128(p32, 10), _mm_slli_si128(p33, 2));
-
-    _mm_storeu_si128((__m128i*)(ptr), v0);
-    _mm_storeu_si128((__m128i*)(ptr + 8), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v2);
 #endif
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 8), v1);
+        _mm_stream_si128((__m128i*)(ptr + 16), v2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 8), v1);
+        _mm_store_si128((__m128i*)(ptr + 16), v2);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 8), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 16), v2);
+    }
 }
 
 inline void v_store_interleave( ushort* ptr, const v_uint16x8& a, const v_uint16x8& b,
-                                const v_uint16x8& c, const v_uint16x8& d)
+                                const v_uint16x8& c, const v_uint16x8& d,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     // a0 a1 a2 a3 ....
     // b0 b1 b2 b3 ....
@@ -2148,27 +2239,58 @@ inline void v_store_interleave( ushort* ptr, const v_uint16x8& a, const v_uint16
     __m128i u3 = _mm_unpackhi_epi16(b.val, d.val); // b4 d4 b5 d5 ...
 
     __m128i v0 = _mm_unpacklo_epi16(u0, u2); // a0 b0 c0 d0 ...
-    __m128i v1 = _mm_unpacklo_epi16(u1, u3); // a4 b4 c4 d4 ...
-    __m128i v2 = _mm_unpackhi_epi16(u0, u2); // a2 b2 c2 d2 ...
+    __m128i v1 = _mm_unpackhi_epi16(u0, u2); // a2 b2 c2 d2 ...
+    __m128i v2 = _mm_unpacklo_epi16(u1, u3); // a4 b4 c4 d4 ...
     __m128i v3 = _mm_unpackhi_epi16(u1, u3); // a6 b6 c6 d6 ...
 
-    _mm_storeu_si128((__m128i*)ptr, v0);
-    _mm_storeu_si128((__m128i*)(ptr + 8), v2);
-    _mm_storeu_si128((__m128i*)(ptr + 16), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 24), v3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 8), v1);
+        _mm_stream_si128((__m128i*)(ptr + 16), v2);
+        _mm_stream_si128((__m128i*)(ptr + 24), v3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 8), v1);
+        _mm_store_si128((__m128i*)(ptr + 16), v2);
+        _mm_store_si128((__m128i*)(ptr + 24), v3);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 8), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 16), v2);
+        _mm_storeu_si128((__m128i*)(ptr + 24), v3);
+    }
 }
 
-inline void v_store_interleave( unsigned* ptr, const v_uint32x4& a, const v_uint32x4& b )
+inline void v_store_interleave( unsigned* ptr, const v_uint32x4& a, const v_uint32x4& b,
+                                hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    __m128i t0 = _mm_unpacklo_epi32(a.val, b.val);
-    __m128i t1 = _mm_unpackhi_epi32(a.val, b.val);
+    __m128i v0 = _mm_unpacklo_epi32(a.val, b.val);
+    __m128i v1 = _mm_unpackhi_epi32(a.val, b.val);
 
-    _mm_storeu_si128((__m128i*)ptr, t0);
-    _mm_storeu_si128((__m128i*)(ptr + 4), t1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 4), v1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 4), v1);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 4), v1);
+    }
 }
 
 inline void v_store_interleave( unsigned* ptr, const v_uint32x4& a, const v_uint32x4& b,
-                                const v_uint32x4& c )
+                                const v_uint32x4& c, hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     v_uint32x4 z = v_setzero_u32(), u0, u1, u2, u3;
     v_transpose4x4(a, b, c, z, u0, u1, u2, u3);
@@ -2177,35 +2299,82 @@ inline void v_store_interleave( unsigned* ptr, const v_uint32x4& a, const v_uint
     __m128i v1 = _mm_or_si128(_mm_srli_si128(u1.val, 4), _mm_slli_si128(u2.val, 8));
     __m128i v2 = _mm_or_si128(_mm_srli_si128(u2.val, 8), _mm_slli_si128(u3.val, 4));
 
-    _mm_storeu_si128((__m128i*)ptr, v0);
-    _mm_storeu_si128((__m128i*)(ptr + 4), v1);
-    _mm_storeu_si128((__m128i*)(ptr + 8), v2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 4), v1);
+        _mm_stream_si128((__m128i*)(ptr + 8), v2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 4), v1);
+        _mm_store_si128((__m128i*)(ptr + 8), v2);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 4), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 8), v2);
+    }
 }
 
 inline void v_store_interleave(unsigned* ptr, const v_uint32x4& a, const v_uint32x4& b,
-                               const v_uint32x4& c, const v_uint32x4& d)
+                               const v_uint32x4& c, const v_uint32x4& d,
+                               hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    v_uint32x4 t0, t1, t2, t3;
-    v_transpose4x4(a, b, c, d, t0, t1, t2, t3);
-    v_store(ptr, t0);
-    v_store(ptr + 4, t1);
-    v_store(ptr + 8, t2);
-    v_store(ptr + 12, t3);
+    v_uint32x4 v0, v1, v2, v3;
+    v_transpose4x4(a, b, c, d, v0, v1, v2, v3);
+
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0.val);
+        _mm_stream_si128((__m128i*)(ptr + 4), v1.val);
+        _mm_stream_si128((__m128i*)(ptr + 8), v2.val);
+        _mm_stream_si128((__m128i*)(ptr + 12), v3.val);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0.val);
+        _mm_store_si128((__m128i*)(ptr + 4), v1.val);
+        _mm_store_si128((__m128i*)(ptr + 8), v2.val);
+        _mm_store_si128((__m128i*)(ptr + 12), v3.val);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0.val);
+        _mm_storeu_si128((__m128i*)(ptr + 4), v1.val);
+        _mm_storeu_si128((__m128i*)(ptr + 8), v2.val);
+        _mm_storeu_si128((__m128i*)(ptr + 12), v3.val);
+    }
 }
 
 // 2-channel, float only
-inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32x4& b)
+inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32x4& b,
+                               hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    // a0 a1 a2 a3 ...
-    // b0 b1 b2 b3 ...
-    __m128 u0 = _mm_unpacklo_ps(a.val, b.val); // a0 b0 a1 b1
-    __m128 u1 = _mm_unpackhi_ps(a.val, b.val); // a2 b2 a3 b3
+    __m128 v0 = _mm_unpacklo_ps(a.val, b.val); // a0 b0 a1 b1
+    __m128 v1 = _mm_unpackhi_ps(a.val, b.val); // a2 b2 a3 b3
 
-    _mm_storeu_ps(ptr, u0);
-    _mm_storeu_ps((ptr + 4), u1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_ps(ptr, v0);
+        _mm_stream_ps(ptr + 4, v1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_ps(ptr, v0);
+        _mm_store_ps(ptr + 4, v1);
+    }
+    else
+    {
+        _mm_storeu_ps(ptr, v0);
+        _mm_storeu_ps(ptr + 4, v1);
+    }
 }
 
-inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32x4& b, const v_float32x4& c)
+inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32x4& b,
+                               const v_float32x4& c, hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     __m128 u0 = _mm_shuffle_ps(a.val, b.val, _MM_SHUFFLE(0, 0, 0, 0));
     __m128 u1 = _mm_shuffle_ps(c.val, a.val, _MM_SHUFFLE(1, 1, 0, 0));
@@ -2217,13 +2386,29 @@ inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32
     __m128 u5 = _mm_shuffle_ps(b.val, c.val, _MM_SHUFFLE(3, 3, 3, 3));
     __m128 v2 = _mm_shuffle_ps(u4, u5, _MM_SHUFFLE(2, 0, 2, 0));
 
-    _mm_storeu_ps(ptr + 0, v0);
-    _mm_storeu_ps(ptr + 4, v1);
-    _mm_storeu_ps(ptr + 8, v2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_ps(ptr, v0);
+        _mm_stream_ps(ptr + 4, v1);
+        _mm_stream_ps(ptr + 8, v2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_ps(ptr, v0);
+        _mm_store_ps(ptr + 4, v1);
+        _mm_store_ps(ptr + 8, v2);
+    }
+    else
+    {
+        _mm_storeu_ps(ptr, v0);
+        _mm_storeu_ps(ptr + 4, v1);
+        _mm_storeu_ps(ptr + 8, v2);
+    }
 }
 
 inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32x4& b,
-                               const v_float32x4& c, const v_float32x4& d)
+                               const v_float32x4& c, const v_float32x4& d,
+                               hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
     __m128 u0 = _mm_unpacklo_ps(a.val, c.val);
     __m128 u1 = _mm_unpacklo_ps(b.val, d.val);
@@ -2234,43 +2419,109 @@ inline void v_store_interleave(float* ptr, const v_float32x4& a, const v_float32
     __m128 v1 = _mm_unpackhi_ps(u0, u1);
     __m128 v3 = _mm_unpackhi_ps(u2, u3);
 
-    _mm_storeu_ps(ptr +  0, v0);
-    _mm_storeu_ps(ptr +  4, v1);
-    _mm_storeu_ps(ptr +  8, v2);
-    _mm_storeu_ps(ptr + 12, v3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_ps(ptr, v0);
+        _mm_stream_ps(ptr + 4, v1);
+        _mm_stream_ps(ptr + 8, v2);
+        _mm_stream_ps(ptr + 12, v3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_ps(ptr, v0);
+        _mm_store_ps(ptr + 4, v1);
+        _mm_store_ps(ptr + 8, v2);
+        _mm_store_ps(ptr + 12, v3);
+    }
+    else
+    {
+        _mm_storeu_ps(ptr, v0);
+        _mm_storeu_ps(ptr + 4, v1);
+        _mm_storeu_ps(ptr + 8, v2);
+        _mm_storeu_ps(ptr + 12, v3);
+    }
 }
 
-inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b)
+inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b,
+                               hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    __m128i t0 = _mm_unpacklo_epi64(a.val, b.val);
-    __m128i t1 = _mm_unpackhi_epi64(a.val, b.val);
+    __m128i v0 = _mm_unpacklo_epi64(a.val, b.val);
+    __m128i v1 = _mm_unpackhi_epi64(a.val, b.val);
 
-    _mm_storeu_si128((__m128i*)ptr, t0);
-    _mm_storeu_si128((__m128i*)(ptr + 2), t1);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 2), v1);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 2), v1);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 2), v1);
+    }
 }
 
-inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b, const v_uint64x2& c)
+inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b,
+                               const v_uint64x2& c, hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    __m128i t0 = _mm_unpacklo_epi64(a.val, b.val);
-    __m128i t1 = _mm_unpacklo_epi64(c.val, _mm_unpackhi_epi64(a.val, a.val));
-    __m128i t2 = _mm_unpackhi_epi64(b.val, c.val);
+    __m128i v0 = _mm_unpacklo_epi64(a.val, b.val);
+    __m128i v1 = _mm_unpacklo_epi64(c.val, _mm_unpackhi_epi64(a.val, a.val));
+    __m128i v2 = _mm_unpackhi_epi64(b.val, c.val);
 
-    _mm_storeu_si128((__m128i*)ptr, t0);
-    _mm_storeu_si128((__m128i*)(ptr + 2), t1);
-    _mm_storeu_si128((__m128i*)(ptr + 4), t2);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 2), v1);
+        _mm_stream_si128((__m128i*)(ptr + 4), v2);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 2), v1);
+        _mm_store_si128((__m128i*)(ptr + 4), v2);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 2), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 4), v2);
+    }
 }
 
-inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b, const v_uint64x2& c, const v_uint64x2& d)
+inline void v_store_interleave(uint64 *ptr, const v_uint64x2& a, const v_uint64x2& b,
+                               const v_uint64x2& c, const v_uint64x2& d,
+                               hal::StoreMode mode = hal::STORE_UNALIGNED)
 {
-    __m128i t0 = _mm_unpacklo_epi64(a.val, b.val);
-    __m128i t1 = _mm_unpacklo_epi64(c.val, d.val);
-    __m128i t2 = _mm_unpackhi_epi64(a.val, b.val);
-    __m128i t3 = _mm_unpackhi_epi64(c.val, d.val);
+    __m128i v0 = _mm_unpacklo_epi64(a.val, b.val);
+    __m128i v1 = _mm_unpacklo_epi64(c.val, d.val);
+    __m128i v2 = _mm_unpackhi_epi64(a.val, b.val);
+    __m128i v3 = _mm_unpackhi_epi64(c.val, d.val);
 
-    _mm_storeu_si128((__m128i*)ptr, t0);
-    _mm_storeu_si128((__m128i*)(ptr + 2), t1);
-    _mm_storeu_si128((__m128i*)(ptr + 4), t2);
-    _mm_storeu_si128((__m128i*)(ptr + 6), t3);
+    if( mode == hal::STORE_ALIGNED_NOCACHE )
+    {
+        _mm_stream_si128((__m128i*)(ptr), v0);
+        _mm_stream_si128((__m128i*)(ptr + 2), v1);
+        _mm_stream_si128((__m128i*)(ptr + 4), v2);
+        _mm_stream_si128((__m128i*)(ptr + 6), v3);
+    }
+    else if( mode == hal::STORE_ALIGNED )
+    {
+        _mm_store_si128((__m128i*)(ptr), v0);
+        _mm_store_si128((__m128i*)(ptr + 2), v1);
+        _mm_store_si128((__m128i*)(ptr + 4), v2);
+        _mm_store_si128((__m128i*)(ptr + 6), v3);
+    }
+    else
+    {
+        _mm_storeu_si128((__m128i*)(ptr), v0);
+        _mm_storeu_si128((__m128i*)(ptr + 2), v1);
+        _mm_storeu_si128((__m128i*)(ptr + 4), v2);
+        _mm_storeu_si128((__m128i*)(ptr + 6), v3);
+    }
 }
 
 #define OPENCV_HAL_IMPL_SSE_LOADSTORE_INTERLEAVE(_Tpvec0, _Tp0, suffix0, _Tpvec1, _Tp1, suffix1) \
@@ -2298,27 +2549,30 @@ inline void v_load_deinterleave( const _Tp0* ptr, _Tpvec0& a0, _Tpvec0& b0, _Tpv
     c0 = v_reinterpret_as_##suffix0(c1); \
     d0 = v_reinterpret_as_##suffix0(d1); \
 } \
-inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0 ) \
+inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, \
+                                hal::StoreMode mode = hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1);      \
+    v_store_interleave((_Tp1*)ptr, a1, b1, mode);      \
 } \
-inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, const _Tpvec0& c0 ) \
+inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, \
+                                const _Tpvec0& c0, hal::StoreMode mode = hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
     _Tpvec1 c1 = v_reinterpret_as_##suffix1(c0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1, c1);  \
+    v_store_interleave((_Tp1*)ptr, a1, b1, c1, mode);  \
 } \
 inline void v_store_interleave( _Tp0* ptr, const _Tpvec0& a0, const _Tpvec0& b0, \
-                               const _Tpvec0& c0, const _Tpvec0& d0 ) \
+                                const _Tpvec0& c0, const _Tpvec0& d0, \
+                                hal::StoreMode mode = hal::STORE_UNALIGNED ) \
 { \
     _Tpvec1 a1 = v_reinterpret_as_##suffix1(a0); \
     _Tpvec1 b1 = v_reinterpret_as_##suffix1(b0); \
     _Tpvec1 c1 = v_reinterpret_as_##suffix1(c0); \
     _Tpvec1 d1 = v_reinterpret_as_##suffix1(d0); \
-    v_store_interleave((_Tp1*)ptr, a1, b1, c1, d1); \
+    v_store_interleave((_Tp1*)ptr, a1, b1, c1, d1, mode); \
 }
 
 OPENCV_HAL_IMPL_SSE_LOADSTORE_INTERLEAVE(v_int8x16, schar, s8, v_uint8x16, uchar, u8)
diff --git a/modules/core/include/opencv2/core/hal/intrin_vsx.hpp b/modules/core/include/opencv2/core/hal/intrin_vsx.hpp
index 9ad8234895..52bc2cc0ba 100644
--- a/modules/core/include/opencv2/core/hal/intrin_vsx.hpp
+++ b/modules/core/include/opencv2/core/hal/intrin_vsx.hpp
@@ -249,6 +249,10 @@ inline void v_store(_Tp* ptr, const _Tpvec& a)                              \
 { st(a.val, 0, ptr); }                                                      \
 inline void v_store_aligned(VSX_UNUSED(_Tp* ptr), const _Tpvec& a)          \
 { st_a(a.val, 0, ptr); }                                                    \
+inline void v_store_aligned_nocache(VSX_UNUSED(_Tp* ptr), const _Tpvec& a)  \
+{ st_a(a.val, 0, ptr); }                                                    \
+inline void v_store(_Tp* ptr, const _Tpvec& a, hal::StoreMode mode)         \
+{ if(mode == hal::STORE_UNALIGNED) st(a.val, 0, ptr); else st_a(a.val, 0, ptr); } \
 inline void v_store_low(_Tp* ptr, const _Tpvec& a)                          \
 { vec_st_l8(a.val, ptr); }                                                  \
 inline void v_store_high(_Tp* ptr, const _Tpvec& a)                         \
@@ -281,13 +285,16 @@ inline void v_load_deinterleave(const _Tp* ptr, _Tpvec& a,                   \
 inline void v_load_deinterleave(const _Tp* ptr, _Tpvec& a, _Tpvec& b,        \
                                                 _Tpvec& c, _Tpvec& d)        \
 { vec_ld_deinterleave(ptr, a.val, b.val, c.val, d.val); }                    \
-inline void v_store_interleave(_Tp* ptr, const _Tpvec& a, const _Tpvec& b)   \
+inline void v_store_interleave(_Tp* ptr, const _Tpvec& a, const _Tpvec& b,   \
+                               hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { vec_st_interleave(a.val, b.val, ptr); }                                    \
 inline void v_store_interleave(_Tp* ptr, const _Tpvec& a,                    \
-                               const _Tpvec& b, const _Tpvec& c)             \
+                               const _Tpvec& b, const _Tpvec& c,             \
+                               hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { vec_st_interleave(a.val, b.val, c.val, ptr); }                             \
 inline void v_store_interleave(_Tp* ptr, const _Tpvec& a, const _Tpvec& b,   \
-                                         const _Tpvec& c, const _Tpvec& d)   \
+                                         const _Tpvec& c, const _Tpvec& d,   \
+                               hal::StoreMode /*mode*/=hal::STORE_UNALIGNED) \
 { vec_st_interleave(a.val, b.val, c.val, d.val, ptr); }
 
 OPENCV_HAL_IMPL_VSX_INTERLEAVE(uchar, v_uint8x16)
diff --git a/modules/core/include/opencv2/core/utility.hpp b/modules/core/include/opencv2/core/utility.hpp
index c2236985eb..2bc6daf43b 100644
--- a/modules/core/include/opencv2/core/utility.hpp
+++ b/modules/core/include/opencv2/core/utility.hpp
@@ -457,6 +457,18 @@ Returns empty string if feature is not defined
 */
 CV_EXPORTS_W String getHardwareFeatureName(int feature);
 
+/** @brief Returns list of CPU features enabled during compilation.
+
+Returned value is a string containing space separated list of CPU features with following markers:
+
+- no markers - baseline features
+- prefix `*` - features enabled in dispatcher
+- suffix `?` - features enabled but not available in HW
+
+Example: `SSE SSE2 SSE3 *SSE4.1 *SSE4.2 *FP16 *AVX *AVX2 *AVX512-SKX?`
+*/
+CV_EXPORTS std::string getCPUFeaturesLine();
+
 /** @brief Returns the number of logical CPUs available for the process.
  */
 CV_EXPORTS_W int getNumberOfCPUs();
diff --git a/modules/core/src/arithm.cpp b/modules/core/src/arithm.cpp
index c1653d7add..2304378355 100644
--- a/modules/core/src/arithm.cpp
+++ b/modules/core/src/arithm.cpp
@@ -1180,7 +1180,8 @@ void cv::compare(InputArray _src1, InputArray _src2, OutputArray _dst, int op)
     CV_Assert( op == CMP_LT || op == CMP_LE || op == CMP_EQ ||
                op == CMP_NE || op == CMP_GE || op == CMP_GT );
 
-    if(_src1.empty() || _src2.empty())
+    CV_Assert(_src1.empty() == _src2.empty());
+    if (_src1.empty() && _src2.empty())
     {
         _dst.release();
         return;
diff --git a/modules/core/src/copy.cpp b/modules/core/src/copy.cpp
index 8775bff4aa..e89a17b323 100644
--- a/modules/core/src/copy.cpp
+++ b/modules/core/src/copy.cpp
@@ -411,7 +411,8 @@ Mat& Mat::operator = (const Scalar& s)
 {
     CV_INSTRUMENT_REGION()
 
-    if (empty()) return *this;
+    if (this->empty())
+        return *this;
 
     const Mat* arrays[] = { this };
     uchar* dptr;
diff --git a/modules/core/src/mathfuncs_core.simd.hpp b/modules/core/src/mathfuncs_core.simd.hpp
index 354cc00421..b15810317e 100644
--- a/modules/core/src/mathfuncs_core.simd.hpp
+++ b/modules/core/src/mathfuncs_core.simd.hpp
@@ -515,17 +515,17 @@ void exp32f( const float *_x, float *y, int n )
 
 #if CV_SIMD
     const int VECSZ = v_float32::nlanes;
-    static const v_float32 vprescale = vx_setall_f32((float)exp_prescale);
-    static const v_float32 vpostscale = vx_setall_f32((float)exp_postscale);
-    static const v_float32 vminval = vx_setall_f32(minval);
-    static const v_float32 vmaxval = vx_setall_f32(maxval);
+    const v_float32 vprescale = vx_setall_f32((float)exp_prescale);
+    const v_float32 vpostscale = vx_setall_f32((float)exp_postscale);
+    const v_float32 vminval = vx_setall_f32(minval);
+    const v_float32 vmaxval = vx_setall_f32(maxval);
 
-    static const v_float32 vA1 = vx_setall_f32((float)A1);
-    static const v_float32 vA2 = vx_setall_f32((float)A2);
-    static const v_float32 vA3 = vx_setall_f32((float)A3);
-    static const v_float32 vA4 = vx_setall_f32((float)A4);
+    const v_float32 vA1 = vx_setall_f32((float)A1);
+    const v_float32 vA2 = vx_setall_f32((float)A2);
+    const v_float32 vA3 = vx_setall_f32((float)A3);
+    const v_float32 vA4 = vx_setall_f32((float)A4);
 
-    static const v_int32 vidxmask = vx_setall_s32(EXPTAB_MASK);
+    const v_int32 vidxmask = vx_setall_s32(EXPTAB_MASK);
     bool y_aligned = (size_t)(void*)y % 32 == 0;
 
     for( ; i < n; i += VECSZ*2 )
@@ -627,18 +627,18 @@ void exp64f( const double *_x, double *y, int n )
 
 #if CV_SIMD_64F
     const int VECSZ = v_float64::nlanes;
-    static const v_float64 vprescale = vx_setall_f64(exp_prescale);
-    static const v_float64 vpostscale = vx_setall_f64(exp_postscale);
-    static const v_float64 vminval = vx_setall_f64(minval);
-    static const v_float64 vmaxval = vx_setall_f64(maxval);
-
-    static const v_float64 vA1 = vx_setall_f64(A1);
-    static const v_float64 vA2 = vx_setall_f64(A2);
-    static const v_float64 vA3 = vx_setall_f64(A3);
-    static const v_float64 vA4 = vx_setall_f64(A4);
-    static const v_float64 vA5 = vx_setall_f64(A5);
-
-    static const v_int32 vidxmask = vx_setall_s32(EXPTAB_MASK);
+    const v_float64 vprescale = vx_setall_f64(exp_prescale);
+    const v_float64 vpostscale = vx_setall_f64(exp_postscale);
+    const v_float64 vminval = vx_setall_f64(minval);
+    const v_float64 vmaxval = vx_setall_f64(maxval);
+
+    const v_float64 vA1 = vx_setall_f64(A1);
+    const v_float64 vA2 = vx_setall_f64(A2);
+    const v_float64 vA3 = vx_setall_f64(A3);
+    const v_float64 vA4 = vx_setall_f64(A4);
+    const v_float64 vA5 = vx_setall_f64(A5);
+
+    const v_int32 vidxmask = vx_setall_s32(EXPTAB_MASK);
     bool y_aligned = (size_t)(void*)y % 32 == 0;
 
     for( ; i < n; i += VECSZ*2 )
@@ -1024,13 +1024,13 @@ void log32f( const float *_x, float *y, int n )
 
 #if CV_SIMD
     const int VECSZ = v_float32::nlanes;
-    static const v_float32 vln2 = vx_setall_f32((float)ln_2);
-    static const v_float32 v1 = vx_setall_f32(1.f);
-    static const v_float32 vshift = vx_setall_f32(-1.f/512);
+    const v_float32 vln2 = vx_setall_f32((float)ln_2);
+    const v_float32 v1 = vx_setall_f32(1.f);
+    const v_float32 vshift = vx_setall_f32(-1.f/512);
 
-    static const v_float32 vA0 = vx_setall_f32(A0);
-    static const v_float32 vA1 = vx_setall_f32(A1);
-    static const v_float32 vA2 = vx_setall_f32(A2);
+    const v_float32 vA0 = vx_setall_f32(A0);
+    const v_float32 vA1 = vx_setall_f32(A1);
+    const v_float32 vA2 = vx_setall_f32(A2);
 
     for( ; i < n; i += VECSZ )
     {
@@ -1097,9 +1097,9 @@ void log64f( const double *x, double *y, int n )
 
 #if CV_SIMD_64F
     const int VECSZ = v_float64::nlanes;
-    static const v_float64 vln2 = vx_setall_f64(ln_2);
+    const v_float64 vln2 = vx_setall_f64(ln_2);
 
-    static const v_float64
+    const v_float64
         vA0 = vx_setall_f64(A0), vA1 = vx_setall_f64(A1),
         vA2 = vx_setall_f64(A2), vA3 = vx_setall_f64(A3),
         vA4 = vx_setall_f64(A4), vA5 = vx_setall_f64(A5),
diff --git a/modules/core/src/matrix.cpp b/modules/core/src/matrix.cpp
index 65ac200463..2da6ca6399 100644
--- a/modules/core/src/matrix.cpp
+++ b/modules/core/src/matrix.cpp
@@ -602,13 +602,13 @@ void Mat::pop_back(size_t nelems)
 
 void Mat::push_back_(const void* elem)
 {
-    int r = size.p[0];
+    size_t r = size.p[0];
     if( isSubmatrix() || dataend + step.p[0] > datalimit )
         reserve( std::max(r + 1, (r*3+1)/2) );
 
     size_t esz = elemSize();
     memcpy(data + r*step.p[0], elem, esz);
-    size.p[0] = r + 1;
+    size.p[0] = int(r + 1);
     dataend += step.p[0];
     uint64 tsz = size.p[0];
     for( int i = 1; i < dims; i++ )
@@ -709,7 +709,8 @@ void Mat::resize(size_t nelems, const Scalar& s)
 
 void Mat::push_back(const Mat& elems)
 {
-    int r = size.p[0], delta = elems.size.p[0];
+    size_t r = size.p[0];
+    size_t delta = elems.size.p[0];
     if( delta == 0 )
         return;
     if( this == &elems )
@@ -726,7 +727,7 @@ void Mat::push_back(const Mat& elems)
 
     size.p[0] = elems.size.p[0];
     bool eq = size == elems.size;
-    size.p[0] = r;
+    size.p[0] = int(r);
     if( !eq )
         CV_Error(CV_StsUnmatchedSizes, "Pushed vector length is not equal to matrix row length");
     if( type() != elems.type() )
@@ -735,7 +736,7 @@ void Mat::push_back(const Mat& elems)
     if( isSubmatrix() || dataend + step.p[0]*delta > datalimit )
         reserve( std::max(r + delta, (r*3+1)/2) );
 
-    size.p[0] += delta;
+    size.p[0] += int(delta);
     dataend += step.p[0]*delta;
 
     //updateContinuityFlag(*this);
@@ -744,7 +745,7 @@ void Mat::push_back(const Mat& elems)
         memcpy(data + r*step.p[0], elems.data, elems.total()*elems.elemSize());
     else
     {
-        Mat part = rowRange(r, r + delta);
+        Mat part = rowRange(int(r), int(r + delta));
         elems.copyTo(part);
     }
 }
diff --git a/modules/core/src/mean.cpp b/modules/core/src/mean.cpp
index d0029b3cbc..dcf1ae206c 100644
--- a/modules/core/src/mean.cpp
+++ b/modules/core/src/mean.cpp
@@ -766,11 +766,13 @@ void cv::meanStdDev( InputArray _src, OutputArray _mean, OutputArray _sdv, Input
 {
     CV_INSTRUMENT_REGION()
 
+    CV_Assert(!_src.empty());
+    CV_Assert( _mask.empty() || _mask.type() == CV_8UC1 );
+
     CV_OCL_RUN(OCL_PERFORMANCE_CHECK(_src.isUMat()) && _src.dims() <= 2,
                ocl_meanStdDev(_src, _mean, _sdv, _mask))
 
     Mat src = _src.getMat(), mask = _mask.getMat();
-    CV_Assert( mask.empty() || mask.type() == CV_8UC1 );
 
     CV_OVX_RUN(!ovx::skipSmallImages<VX_KERNEL_MEAN_STDDEV>(src.cols, src.rows),
                openvx_meanStdDev(src, _mean, _sdv, mask))
diff --git a/modules/core/src/merge.cpp b/modules/core/src/merge.cpp
index a57d3bbb6e..9c52f0e20c 100644
--- a/modules/core/src/merge.cpp
+++ b/modules/core/src/merge.cpp
@@ -9,21 +9,58 @@
 namespace cv { namespace hal {
 
 #if CV_SIMD
+/*
+  The trick with STORE_UNALIGNED/STORE_ALIGNED_NOCACHE is the following:
+  on IA there are instructions movntps and such to which
+  v_store_interleave(...., STORE_ALIGNED_NOCACHE) is mapped.
+  Those instructions write directly into memory w/o touching cache
+  that results in dramatic speed improvements, especially on
+  large arrays (FullHD, 4K etc.).
+
+  Those intrinsics require the destination address to be aligned
+  by 16/32 bits (with SSE2 and AVX2, respectively).
+  So we potentially split the processing into 3 stages:
+  1) the optional prefix part [0:i0), where we use simple unaligned stores.
+  2) the optional main part [i0:len - VECSZ], where we use "nocache" mode.
+     But in some cases we have to use unaligned stores in this part.
+  3) the optional suffix part (the tail) (len - VECSZ:len) where we switch back to "unaligned" mode
+     to process the remaining len - VECSZ elements.
+  In principle there can be very poorly aligned data where there is no main part.
+  For that we set i0=0 and use unaligned stores for the whole array.
+*/
 template<typename T, typename VecT> static void
 vecmerge_( const T** src, T* dst, int len, int cn )
 {
-    int i;
+    const int VECSZ = VecT::nlanes;
+    int i, i0 = 0;
     const T* src0 = src[0];
     const T* src1 = src[1];
 
-    const int VECSZ = VecT::nlanes;
+    int r = (int)((size_t)(void*)dst % (VECSZ*sizeof(T)));
+    hal::StoreMode mode = hal::STORE_ALIGNED_NOCACHE;
+    if( r != 0 )
+    {
+        mode = hal::STORE_UNALIGNED;
+        if( r % cn == 0 && len > VECSZ )
+            i0 = VECSZ - (r / cn);
+    }
+
     if( cn == 2 )
     {
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a = vx_load(src0 + i), b = vx_load(src1 + i);
-            v_store_interleave(dst + i*cn, a, b);
+            v_store_interleave(dst + i*cn, a, b, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     else if( cn == 3 )
@@ -31,9 +68,18 @@ vecmerge_( const T** src, T* dst, int len, int cn )
         const T* src2 = src[2];
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a = vx_load(src0 + i), b = vx_load(src1 + i), c = vx_load(src2 + i);
-            v_store_interleave(dst + i*cn, a, b, c);
+            v_store_interleave(dst + i*cn, a, b, c, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     else
@@ -43,10 +89,19 @@ vecmerge_( const T** src, T* dst, int len, int cn )
         const T* src3 = src[3];
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a = vx_load(src0 + i), b = vx_load(src1 + i);
             VecT c = vx_load(src2 + i), d = vx_load(src3 + i);
-            v_store_interleave(dst + i*cn, a, b, c, d);
+            v_store_interleave(dst + i*cn, a, b, c, d, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     vx_cleanup();
diff --git a/modules/core/src/ocl.cpp b/modules/core/src/ocl.cpp
index cc6feacbbb..05f128baa7 100644
--- a/modules/core/src/ocl.cpp
+++ b/modules/core/src/ocl.cpp
@@ -2834,7 +2834,22 @@ extern "C" {
 
 static void CL_CALLBACK oclCleanupCallback(cl_event e, cl_int, void *p)
 {
-    ((cv::ocl::Kernel::Impl*)p)->finit(e);
+    try
+    {
+        ((cv::ocl::Kernel::Impl*)p)->finit(e);
+    }
+    catch (const cv::Exception& exc)
+    {
+        CV_LOG_ERROR(NULL, "OCL: Unexpected OpenCV exception in OpenCL callback: " << exc.what());
+    }
+    catch (const std::exception& exc)
+    {
+        CV_LOG_ERROR(NULL, "OCL: Unexpected C++ exception in OpenCL callback: " << exc.what());
+    }
+    catch (...)
+    {
+        CV_LOG_ERROR(NULL, "OCL: Unexpected unknown C++ exception in OpenCL callback");
+    }
 }
 
 }
diff --git a/modules/core/src/rand.cpp b/modules/core/src/rand.cpp
index a456c72633..cc46345ecd 100644
--- a/modules/core/src/rand.cpp
+++ b/modules/core/src/rand.cpp
@@ -511,8 +511,8 @@ static RandnScaleFunc randnScaleTab[] =
 void RNG::fill( InputOutputArray _mat, int disttype,
                 InputArray _param1arg, InputArray _param2arg, bool saturateRange )
 {
-    if (_mat.empty())
-        return;
+    CV_Assert(!_mat.empty());
+
     Mat mat = _mat.getMat(), _param1 = _param1arg.getMat(), _param2 = _param2arg.getMat();
     int depth = mat.depth(), cn = mat.channels();
     AutoBuffer<double> _parambuf;
diff --git a/modules/core/src/split.cpp b/modules/core/src/split.cpp
index 6f7b61ac7e..78d8daadd0 100644
--- a/modules/core/src/split.cpp
+++ b/modules/core/src/split.cpp
@@ -9,23 +9,46 @@
 namespace cv { namespace hal {
 
 #if CV_SIMD
+// see the comments for vecmerge_ in merge.cpp
 template<typename T, typename VecT> static void
 vecsplit_( const T* src, T** dst, int len, int cn )
 {
-    int i;
+    const int VECSZ = VecT::nlanes;
+    int i, i0 = 0;
     T* dst0 = dst[0];
     T* dst1 = dst[1];
 
-    const int VECSZ = VecT::nlanes;
+    int r0 = (int)((size_t)(void*)dst0 % (VECSZ*sizeof(T)));
+    int r1 = (int)((size_t)(void*)dst1 % (VECSZ*sizeof(T)));
+    int r2 = cn > 2 ? (int)((size_t)(void*)dst[2] % (VECSZ*sizeof(T))) : r0;
+    int r3 = cn > 3 ? (int)((size_t)(void*)dst[3] % (VECSZ*sizeof(T))) : r0;
+
+    hal::StoreMode mode = hal::STORE_ALIGNED_NOCACHE;
+    if( (r0|r1|r2|r3) != 0 )
+    {
+        mode = hal::STORE_UNALIGNED;
+        if( r0 == r1 && r0 == r2 && r0 == r3 && r0 % cn == 0 && len > VECSZ )
+            i0 = VECSZ - (r0 / cn);
+    }
+
     if( cn == 2 )
     {
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a, b;
             v_load_deinterleave(src + i*cn, a, b);
-            v_store(dst0 + i, a);
-            v_store(dst1 + i, b);
+            v_store(dst0 + i, a, mode);
+            v_store(dst1 + i, b, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     else if( cn == 3 )
@@ -33,12 +56,21 @@ vecsplit_( const T* src, T** dst, int len, int cn )
         T* dst2 = dst[2];
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a, b, c;
             v_load_deinterleave(src + i*cn, a, b, c);
-            v_store(dst0 + i, a);
-            v_store(dst1 + i, b);
-            v_store(dst2 + i, c);
+            v_store(dst0 + i, a, mode);
+            v_store(dst1 + i, b, mode);
+            v_store(dst2 + i, c, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     else
@@ -48,13 +80,22 @@ vecsplit_( const T* src, T** dst, int len, int cn )
         T* dst3 = dst[3];
         for( i = 0; i < len; i += VECSZ )
         {
-            i = std::min( len - VECSZ, i );
+            if( i > len - VECSZ )
+            {
+                i = len - VECSZ;
+                mode = hal::STORE_UNALIGNED;
+            }
             VecT a, b, c, d;
             v_load_deinterleave(src + i*cn, a, b, c, d);
-            v_store(dst0 + i, a);
-            v_store(dst1 + i, b);
-            v_store(dst2 + i, c);
-            v_store(dst3 + i, d);
+            v_store(dst0 + i, a, mode);
+            v_store(dst1 + i, b, mode);
+            v_store(dst2 + i, c, mode);
+            v_store(dst3 + i, d, mode);
+            if( i < i0 )
+            {
+                i = i0 - VECSZ;
+                mode = hal::STORE_ALIGNED_NOCACHE;
+            }
         }
     }
     vx_cleanup();
diff --git a/modules/core/src/system.cpp b/modules/core/src/system.cpp
index dea5b1b0fd..eb4aecfd91 100644
--- a/modules/core/src/system.cpp
+++ b/modules/core/src/system.cpp
@@ -654,6 +654,27 @@ String getHardwareFeatureName(int feature)
     return name ? String(name) : String();
 }
 
+std::string getCPUFeaturesLine()
+{
+    const int features[] = { CV_CPU_BASELINE_FEATURES, CV_CPU_DISPATCH_FEATURES };
+    const int sz = sizeof(features) / sizeof(features[0]);
+    std::string result;
+    std::string prefix;
+    for (int i = 1; i < sz; ++i)
+    {
+        if (features[i] == 0)
+        {
+            prefix = "*";
+            continue;
+        }
+        if (i != 1) result.append(" ");
+        result.append(prefix);
+        result.append(getHWFeatureNameSafe(features[i]));
+        if (!checkHardwareSupport(features[i])) result.append("?");
+    }
+    return result;
+}
+
 volatile bool useOptimizedFlag = true;
 
 void setUseOptimized( bool flag )
diff --git a/modules/core/src/umatrix.cpp b/modules/core/src/umatrix.cpp
index f61126b3d9..151c4ac9cb 100644
--- a/modules/core/src/umatrix.cpp
+++ b/modules/core/src/umatrix.cpp
@@ -84,14 +84,11 @@ UMatData::~UMatData()
     allocatorFlags_ = 0;
     if (originalUMatData)
     {
-        UMatData* u = originalUMatData;
-        CV_XADD(&(u->urefcount), -1);
-        CV_XADD(&(u->refcount), -1);
         bool showWarn = false;
-        if (u->refcount == 0)
+        UMatData* u = originalUMatData;
+        bool zero_Ref = CV_XADD(&(u->refcount), -1) == 1;
+        if (zero_Ref)
         {
-            if (u->urefcount > 0)
-                showWarn = true;
             // simulate Mat::deallocate
             if (u->mapcount != 0)
             {
@@ -102,7 +99,10 @@ UMatData::~UMatData()
                 // we don't do "map", so we can't do "unmap"
             }
         }
-        if (u->refcount == 0 && u->urefcount == 0) // oops, we need to free resources
+        bool zero_URef = CV_XADD(&(u->urefcount), -1) == 1;
+        if (zero_Ref && !zero_URef)
+            showWarn = true;
+        if (zero_Ref && zero_URef) // oops, we need to free resources
         {
             showWarn = true;
             // simulate UMat::deallocate
diff --git a/modules/core/test/test_arithm.cpp b/modules/core/test/test_arithm.cpp
index f74db063b2..b5117154a7 100644
--- a/modules/core/test/test_arithm.cpp
+++ b/modules/core/test/test_arithm.cpp
@@ -2008,11 +2008,9 @@ TEST(Subtract, scalarc4_matc4)
 TEST(Compare, empty)
 {
     cv::Mat temp, dst1, dst2;
-    cv::compare(temp, temp, dst1, cv::CMP_EQ);
-    dst2 = temp > 5;
-
+    EXPECT_NO_THROW(cv::compare(temp, temp, dst1, cv::CMP_EQ));
     EXPECT_TRUE(dst1.empty());
-    EXPECT_TRUE(dst2.empty());
+    EXPECT_THROW(dst2 = temp > 5, cv::Exception);
 }
 
 TEST(Compare, regression_8999)
@@ -2020,9 +2018,7 @@ TEST(Compare, regression_8999)
     Mat_<double> A(4,1); A << 1, 3, 2, 4;
     Mat_<double> B(1,1); B << 2;
     Mat C;
-    ASSERT_ANY_THROW({
-        cv::compare(A, B, C, CMP_LT);
-    });
+    EXPECT_THROW(cv::compare(A, B, C, CMP_LT), cv::Exception);
 }
 
 
diff --git a/modules/core/test/test_concatenation.cpp b/modules/core/test/test_concatenation.cpp
index 1470094fd0..201bf0e9af 100644
--- a/modules/core/test/test_concatenation.cpp
+++ b/modules/core/test/test_concatenation.cpp
@@ -43,106 +43,35 @@
 
 namespace opencv_test { namespace {
 
-class Core_ConcatenationTest : public cvtest::BaseTest
+TEST(Core_Concatenation, empty)
 {
-public:
-    Core_ConcatenationTest(bool horizontal, bool firstEmpty, bool secondEmpty);
-protected:
-    int prepare_test_case( int );
-    void run_func();
-    int validate_test_results( int );
+    const Mat mat0x5(0,5, CV_8U, Scalar::all(1));
+    const Mat mat10x5(10,5, CV_8U, Scalar::all(1));
+    const Mat mat20x5(20,5, CV_8U, Scalar::all(1));
 
-    Mat mat0x5;
-    Mat mat10x5;
-    Mat mat20x5;
-
-    Mat mat5x0;
-    Mat mat5x10;
-    Mat mat5x20;
+    const Mat mat5x0(5,0, CV_8U, Scalar::all(1));
+    const Mat mat5x10(5,10, CV_8U, Scalar::all(1));
+    const Mat mat5x20(5,20, CV_8U, Scalar::all(1));
 
     Mat result;
 
-    bool horizontal;
-    bool firstEmpty;
-    bool secondEmpty;
-
-private:
-    static bool areEqual(const Mat& m1, const Mat& m2);
-
-};
-
-Core_ConcatenationTest::Core_ConcatenationTest(bool horizontal_, bool firstEmpty_, bool secondEmpty_)
-    : horizontal(horizontal_)
-    , firstEmpty(firstEmpty_)
-    , secondEmpty(secondEmpty_)
-{
-    test_case_count = 1;
-
-    mat0x5 = Mat::ones(0,5, CV_8U);
-    mat10x5 = Mat::ones(10,5, CV_8U);
-    mat20x5 = Mat::ones(20,5, CV_8U);
-
-    mat5x0 = Mat::ones(5,0, CV_8U);
-    mat5x10 = Mat::ones(5,10, CV_8U);
-    mat5x20 = Mat::ones(5,20, CV_8U);
-}
-
-int Core_ConcatenationTest::prepare_test_case( int test_case_idx )
-{
-    cvtest::BaseTest::prepare_test_case( test_case_idx );
-    return 1;
-}
-
-void Core_ConcatenationTest::run_func()
-{
-    if (horizontal)
-    {
-        cv::hconcat((firstEmpty ? mat5x0 : mat5x10),
-                    (secondEmpty ? mat5x0 : mat5x10),
-                    result);
-    } else {
-        cv::vconcat((firstEmpty ? mat0x5 : mat10x5),
-                    (secondEmpty ? mat0x5 : mat10x5),
-                    result);
-    }
-}
-
-int Core_ConcatenationTest::validate_test_results( int )
-{
-    Mat expected;
-
-    if (firstEmpty && secondEmpty)
-        expected = (horizontal ? mat5x0 : mat0x5);
-    else if ((firstEmpty && !secondEmpty) || (!firstEmpty && secondEmpty))
-        expected = (horizontal ? mat5x10 : mat10x5);
-    else
-        expected = (horizontal ? mat5x20 : mat20x5);
-
-    if (areEqual(expected, result))
-    {
-        return cvtest::TS::OK;
-    } else
-    {
-        ts->printf( cvtest::TS::LOG, "Concatenation failed");
-        ts->set_failed_test_info( cvtest::TS::FAIL_MISMATCH );
-    }
-
-    return cvtest::TS::OK;
-}
-
-bool Core_ConcatenationTest::areEqual(const Mat &m1, const Mat &m2)
-{
-    return m1.size() == m2.size()
-            && m1.type() == m2.type()
-            && countNonZero(m1 != m2) == 0;
+    cv::hconcat(mat5x0, mat5x0, result);
+    EXPECT_MAT_N_DIFF(result, mat5x0, 0);
+    cv::hconcat(mat5x0, mat5x10, result);
+    EXPECT_MAT_N_DIFF(result, mat5x10, 0);
+    cv::hconcat(mat5x10, mat5x0, result);
+    EXPECT_MAT_N_DIFF(result, mat5x10, 0);
+    cv::hconcat(mat5x10, mat5x10, result);
+    EXPECT_MAT_N_DIFF(result, mat5x20, 0);
+
+    cv::vconcat(mat0x5, mat0x5, result);
+    EXPECT_MAT_N_DIFF(result, mat0x5, 0);
+    cv::vconcat(mat0x5, mat10x5, result);
+    EXPECT_MAT_N_DIFF(result, mat10x5, 0);
+    cv::vconcat(mat10x5, mat0x5, result);
+    EXPECT_MAT_N_DIFF(result, mat10x5, 0);
+    cv::vconcat(mat10x5, mat10x5, result);
+    EXPECT_MAT_N_DIFF(result, mat20x5, 0);
 }
 
-TEST(Core_Concatenation, hconcat_empty_nonempty) { Core_ConcatenationTest test(true, true, false); test.safe_run(); }
-TEST(Core_Concatenation, hconcat_nonempty_empty) { Core_ConcatenationTest test(true, false, true); test.safe_run(); }
-TEST(Core_Concatenation, hconcat_empty_empty) { Core_ConcatenationTest test(true, true, true); test.safe_run(); }
-
-TEST(Core_Concatenation, vconcat_empty_nonempty) { Core_ConcatenationTest test(false, true, false); test.safe_run(); }
-TEST(Core_Concatenation, vconcat_nonempty_empty) { Core_ConcatenationTest test(false, false, true); test.safe_run(); }
-TEST(Core_Concatenation, vconcat_empty_empty) { Core_ConcatenationTest test(false, true, true); test.safe_run(); }
-
 }} // namespace
diff --git a/modules/core/test/test_intrin.avx2.cpp b/modules/core/test/test_intrin.avx2.cpp
new file mode 100644
index 0000000000..9ebfcdf542
--- /dev/null
+++ b/modules/core/test/test_intrin.avx2.cpp
@@ -0,0 +1,5 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#include "test_precomp.hpp"
+#include "test_intrin.simd.hpp"
\ No newline at end of file
diff --git a/modules/core/test/test_intrin.cpp b/modules/core/test/test_intrin.cpp
index 9a1130fe96..6610e332de 100644
--- a/modules/core/test/test_intrin.cpp
+++ b/modules/core/test/test_intrin.cpp
@@ -2,249 +2,101 @@
 // It is subject to the license terms in the LICENSE file found in the top-level directory
 // of this distribution and at http://opencv.org/license.html.
 #include "test_precomp.hpp"
+#include "test_intrin.simd.hpp"
 
-#include "test_intrin_utils.hpp"
-
-#define CV_CPU_SIMD_FILENAME "test_intrin_utils.hpp"
+#define CV_CPU_SIMD_FILENAME "test_intrin.simd.hpp"
 #define CV_CPU_DISPATCH_MODE FP16
 #include "opencv2/core/private/cv_cpu_include_simd_declarations.hpp"
 
-
-using namespace cv;
+#define CV_CPU_DISPATCH_MODE AVX2
+#include "opencv2/core/private/cv_cpu_include_simd_declarations.hpp"
 
 namespace opencv_test { namespace hal {
 using namespace CV_CPU_OPTIMIZATION_NAMESPACE;
 
-//=============  8-bit integer =====================================================================
-
-TEST(hal_intrin, uint8x16) {
-    TheTest<v_uint8x16>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_expand_q()
-        .test_addsub()
-        .test_addsub_wrap()
-        .test_cmp()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_mask()
-        .test_popcount()
-        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
-        .test_pack_u<1>().test_pack_u<2>().test_pack_u<3>().test_pack_u<8>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
-        ;
-}
+TEST(hal_intrin, uint8x16)
+{ test_hal_intrin_uint8(); }
 
-TEST(hal_intrin, int8x16) {
-    TheTest<v_int8x16>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_expand_q()
-        .test_addsub()
-        .test_addsub_wrap()
-        .test_cmp()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_abs()
-        .test_mask()
-        .test_popcount()
-        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
-        ;
-}
+TEST(hal_intrin, int8x16)
+{ test_hal_intrin_int8(); }
 
-//============= 16-bit integer =====================================================================
-
-TEST(hal_intrin, uint16x8) {
-    TheTest<v_uint16x8>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_addsub()
-        .test_addsub_wrap()
-        .test_mul()
-        .test_mul_expand()
-        .test_cmp()
-        .test_shift<1>()
-        .test_shift<8>()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_reduce()
-        .test_mask()
-        .test_popcount()
-        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
-        .test_pack_u<1>().test_pack_u<2>().test_pack_u<7>().test_pack_u<16>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
-        ;
-}
+TEST(hal_intrin, uint16x8)
+{ test_hal_intrin_uint16(); }
 
-TEST(hal_intrin, int16x8) {
-    TheTest<v_int16x8>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_addsub()
-        .test_addsub_wrap()
-        .test_mul()
-        .test_mul_expand()
-        .test_cmp()
-        .test_shift<1>()
-        .test_shift<8>()
-        .test_dot_prod()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_abs()
-        .test_reduce()
-        .test_mask()
-        .test_popcount()
-        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
-        ;
-}
+TEST(hal_intrin, int16x8)
+{ test_hal_intrin_int16(); }
 
-//============= 32-bit integer =====================================================================
-
-TEST(hal_intrin, uint32x4) {
-    TheTest<v_uint32x4>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_addsub()
-        .test_mul()
-        .test_mul_expand()
-        .test_cmp()
-        .test_shift<1>()
-        .test_shift<8>()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_reduce()
-        .test_mask()
-        .test_popcount()
-        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
-        .test_transpose()
-        ;
-}
+TEST(hal_intrin, int32x4)
+{ test_hal_intrin_int32(); }
 
-TEST(hal_intrin, int32x4) {
-    TheTest<v_int32x4>()
-        .test_loadstore()
-        .test_interleave()
-        .test_expand()
-        .test_addsub()
-        .test_mul()
-        .test_abs()
-        .test_cmp()
-        .test_popcount()
-        .test_shift<1>().test_shift<8>()
-        .test_logic()
-        .test_min_max()
-        .test_absdiff()
-        .test_reduce()
-        .test_mask()
-        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
-        .test_unpack()
-        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
-        .test_float_cvt32()
-        .test_float_cvt64()
-        .test_transpose()
-        ;
-}
+TEST(hal_intrin, uint32x4)
+{ test_hal_intrin_uint32(); }
 
-//============= 64-bit integer =====================================================================
-
-TEST(hal_intrin, uint64x2) {
-    TheTest<v_uint64x2>()
-        .test_loadstore()
-        .test_addsub()
-        .test_shift<1>().test_shift<8>()
-        .test_logic()
-        .test_extract<0>().test_extract<1>()
-        .test_rotate<0>().test_rotate<1>()
-        ;
-}
+TEST(hal_intrin, uint64x2)
+{ test_hal_intrin_uint64(); }
 
-TEST(hal_intrin, int64x2) {
-    TheTest<v_int64x2>()
-        .test_loadstore()
-        .test_addsub()
-        .test_shift<1>().test_shift<8>()
-        .test_logic()
-        .test_extract<0>().test_extract<1>()
-        .test_rotate<0>().test_rotate<1>()
-        ;
-}
+TEST(hal_intrin, int64x2)
+{ test_hal_intrin_int64(); }
 
-//============= Floating point =====================================================================
-
-TEST(hal_intrin, float32x4) {
-    TheTest<v_float32x4>()
-        .test_loadstore()
-        .test_interleave()
-        .test_interleave_2channel()
-        .test_addsub()
-        .test_mul()
-        .test_div()
-        .test_cmp()
-        .test_sqrt_abs()
-        .test_min_max()
-        .test_float_absdiff()
-        .test_reduce()
-        .test_mask()
-        .test_unpack()
-        .test_float_math()
-        .test_float_cvt64()
-        .test_matmul()
-        .test_transpose()
-        .test_reduce_sum4()
-        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
-        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
-        ;
-}
+TEST(hal_intrin, float32x4)
+{ test_hal_intrin_float32(); }
 
-#if CV_SIMD128_64F
-TEST(hal_intrin, float64x2) {
-    TheTest<v_float64x2>()
-        .test_loadstore()
-        .test_addsub()
-        .test_mul()
-        .test_div()
-        .test_cmp()
-        .test_sqrt_abs()
-        .test_min_max()
-        .test_float_absdiff()
-        .test_mask()
-        .test_unpack()
-        .test_float_math()
-        .test_float_cvt32()
-        .test_extract<0>().test_extract<1>()
-        .test_rotate<0>().test_rotate<1>()
-        ;
-}
-#endif
+TEST(hal_intrin, float64x2)
+{ test_hal_intrin_float64(); }
 
-TEST(hal_intrin,float16)
+TEST(hal_intrin, float16x8)
 {
     CV_CPU_CALL_FP16_(test_hal_intrin_float16, ());
     throw SkipTestException("Unsupported hardware: FP16 is not available");
 }
 
-}}
+#define DISPATCH_SIMD_MODES AVX2
+#define DISPATCH_SIMD_NAME "SIMD256"
+#define DISPATCH_SIMD(fun)                              \
+    do {                                                \
+        CV_CPU_DISPATCH(fun, (), DISPATCH_SIMD_MODES);  \
+        throw SkipTestException(                        \
+            "Unsupported hardware: "                    \
+            DISPATCH_SIMD_NAME                          \
+            " is not available"                         \
+        );                                              \
+    } while(0)
+
+TEST(hal_intrin256, uint8x32)
+{ DISPATCH_SIMD(test_hal_intrin_uint8); }
+
+TEST(hal_intrin256, int8x32)
+{ DISPATCH_SIMD(test_hal_intrin_int8); }
+
+TEST(hal_intrin256, uint16x16)
+{ DISPATCH_SIMD(test_hal_intrin_uint16); }
+
+TEST(hal_intrin256, int16x16)
+{ DISPATCH_SIMD(test_hal_intrin_int16); }
+
+TEST(hal_intrin256, uint32x8)
+{ DISPATCH_SIMD(test_hal_intrin_uint32); }
+
+TEST(hal_intrin256, int32x8)
+{ DISPATCH_SIMD(test_hal_intrin_int32); }
+
+TEST(hal_intrin256, uint64x4)
+{ DISPATCH_SIMD(test_hal_intrin_uint64); }
+
+TEST(hal_intrin256, int64x4)
+{ DISPATCH_SIMD(test_hal_intrin_int64); }
+
+TEST(hal_intrin256, float32x8)
+{ DISPATCH_SIMD(test_hal_intrin_float32); }
+
+TEST(hal_intrin256, float64x4)
+{ DISPATCH_SIMD(test_hal_intrin_float64); }
+
+TEST(hal_intrin256, float16x16)
+{
+    if (!CV_CPU_HAS_SUPPORT_FP16)
+        throw SkipTestException("Unsupported hardware: FP16 is not available");
+    DISPATCH_SIMD(test_hal_intrin_float16);
+}
+
+}} // namespace
\ No newline at end of file
diff --git a/modules/core/test/test_intrin.fp16.cpp b/modules/core/test/test_intrin.fp16.cpp
index 893c5f147a..9f6416bcf8 100644
--- a/modules/core/test/test_intrin.fp16.cpp
+++ b/modules/core/test/test_intrin.fp16.cpp
@@ -9,7 +9,7 @@ CV_CPU_OPTIMIZATION_NAMESPACE_BEGIN
 
 void test_hal_intrin_float16()
 {
-    TheTest<v_float16x8>()
+    TheTest<v_float16>()
         .test_loadstore_fp16()
         .test_float_cvt_fp16()
         ;
diff --git a/modules/core/test/test_intrin.simd.hpp b/modules/core/test/test_intrin.simd.hpp
new file mode 100644
index 0000000000..4e0d3a073f
--- /dev/null
+++ b/modules/core/test/test_intrin.simd.hpp
@@ -0,0 +1,296 @@
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+#include "test_precomp.hpp"
+#include "test_intrin_utils.hpp"
+
+namespace opencv_test { namespace hal {
+CV_CPU_OPTIMIZATION_NAMESPACE_BEGIN
+
+void test_hal_intrin_uint8();
+void test_hal_intrin_int8();
+void test_hal_intrin_uint16();
+void test_hal_intrin_int16();
+void test_hal_intrin_uint32();
+void test_hal_intrin_int32();
+void test_hal_intrin_uint64();
+void test_hal_intrin_int64();
+void test_hal_intrin_float32();
+void test_hal_intrin_float64();
+
+#ifndef CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY
+
+//=============  8-bit integer =====================================================================
+
+void test_hal_intrin_uint8()
+{
+    TheTest<v_uint8>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_expand_q()
+        .test_addsub()
+        .test_addsub_wrap()
+        .test_cmp()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_mask()
+        .test_popcount()
+        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
+        .test_pack_u<1>().test_pack_u<2>().test_pack_u<3>().test_pack_u<8>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
+        ;
+
+#if CV_SIMD256
+    TheTest<v_uint8>()
+        .test_pack<9>().test_pack<10>().test_pack<13>().test_pack<15>()
+        .test_pack_u<9>().test_pack_u<10>().test_pack_u<13>().test_pack_u<15>()
+        .test_extract<16>().test_extract<17>().test_extract<23>().test_extract<31>()
+        .test_rotate<16>().test_rotate<17>().test_rotate<23>().test_rotate<31>()
+        ;
+#endif
+}
+
+void test_hal_intrin_int8()
+{
+    TheTest<v_int8>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_expand_q()
+        .test_addsub()
+        .test_addsub_wrap()
+        .test_cmp()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_abs()
+        .test_mask()
+        .test_popcount()
+        .test_pack<1>().test_pack<2>().test_pack<3>().test_pack<8>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<8>().test_extract<15>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<8>().test_rotate<15>()
+        ;
+}
+
+//============= 16-bit integer =====================================================================
+
+void test_hal_intrin_uint16()
+{
+    TheTest<v_uint16>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_addsub()
+        .test_addsub_wrap()
+        .test_mul()
+        .test_mul_expand()
+        .test_cmp()
+        .test_shift<1>()
+        .test_shift<8>()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_reduce()
+        .test_mask()
+        .test_popcount()
+        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
+        .test_pack_u<1>().test_pack_u<2>().test_pack_u<7>().test_pack_u<16>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
+        ;
+}
+
+void test_hal_intrin_int16()
+{
+    TheTest<v_int16>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_addsub()
+        .test_addsub_wrap()
+        .test_mul()
+        .test_mul_expand()
+        .test_cmp()
+        .test_shift<1>()
+        .test_shift<8>()
+        .test_dot_prod()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_abs()
+        .test_reduce()
+        .test_mask()
+        .test_popcount()
+        .test_pack<1>().test_pack<2>().test_pack<7>().test_pack<16>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<4>().test_extract<7>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<4>().test_rotate<7>()
+        ;
+}
+
+//============= 32-bit integer =====================================================================
+
+void test_hal_intrin_uint32()
+{
+    TheTest<v_uint32>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_addsub()
+        .test_mul()
+        .test_mul_expand()
+        .test_cmp()
+        .test_shift<1>()
+        .test_shift<8>()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_reduce()
+        .test_mask()
+        .test_popcount()
+        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
+        .test_transpose()
+        ;
+}
+
+void test_hal_intrin_int32()
+{
+    TheTest<v_int32>()
+        .test_loadstore()
+        .test_interleave()
+        .test_expand()
+        .test_addsub()
+        .test_mul()
+        .test_abs()
+        .test_cmp()
+        .test_popcount()
+        .test_shift<1>().test_shift<8>()
+        .test_logic()
+        .test_min_max()
+        .test_absdiff()
+        .test_reduce()
+        .test_mask()
+        .test_pack<1>().test_pack<2>().test_pack<15>().test_pack<32>()
+        .test_unpack()
+        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
+        .test_float_cvt32()
+        .test_float_cvt64()
+        .test_transpose()
+        ;
+}
+
+//============= 64-bit integer =====================================================================
+
+void test_hal_intrin_uint64()
+{
+    TheTest<v_uint64>()
+        .test_loadstore()
+        .test_addsub()
+        .test_shift<1>().test_shift<8>()
+        .test_logic()
+        .test_extract<0>().test_extract<1>()
+        .test_rotate<0>().test_rotate<1>()
+        ;
+}
+
+void test_hal_intrin_int64()
+{
+    TheTest<v_int64>()
+        .test_loadstore()
+        .test_addsub()
+        .test_shift<1>().test_shift<8>()
+        .test_logic()
+        .test_extract<0>().test_extract<1>()
+        .test_rotate<0>().test_rotate<1>()
+        ;
+}
+
+//============= Floating point =====================================================================
+void test_hal_intrin_float32()
+{
+    TheTest<v_float32>()
+        .test_loadstore()
+        .test_interleave()
+        .test_interleave_2channel()
+        .test_addsub()
+        .test_mul()
+        .test_div()
+        .test_cmp()
+        .test_sqrt_abs()
+        .test_min_max()
+        .test_float_absdiff()
+        .test_reduce()
+        .test_mask()
+        .test_unpack()
+        .test_float_math()
+        .test_float_cvt64()
+        .test_matmul()
+        .test_transpose()
+        .test_reduce_sum4()
+        .test_extract<0>().test_extract<1>().test_extract<2>().test_extract<3>()
+        .test_rotate<0>().test_rotate<1>().test_rotate<2>().test_rotate<3>()
+        ;
+
+#if CV_SIMD256
+    TheTest<v_float32>()
+        .test_extract<4>().test_extract<5>().test_extract<6>().test_extract<7>()
+        .test_rotate<4>().test_rotate<5>().test_rotate<6>().test_rotate<7>()
+        ;
+#endif
+}
+
+void test_hal_intrin_float64()
+{
+#if CV_SIMD_64F
+    TheTest<v_float64>()
+        .test_loadstore()
+        .test_addsub()
+        .test_mul()
+        .test_div()
+        .test_cmp()
+        .test_sqrt_abs()
+        .test_min_max()
+        .test_float_absdiff()
+        .test_mask()
+        .test_unpack()
+        .test_float_math()
+        .test_float_cvt32()
+        .test_extract<0>().test_extract<1>()
+        .test_rotate<0>().test_rotate<1>()
+        ;
+
+#if CV_SIMD256
+    TheTest<v_float64>()
+        .test_extract<2>().test_extract<3>()
+        .test_rotate<2>().test_rotate<3>()
+        ;
+#endif //CV_SIMD256
+
+#endif
+}
+
+#if CV_FP16 && CV_SIMD_WIDTH > 16
+void test_hal_intrin_float16()
+{
+    TheTest<v_float16>()
+        .test_loadstore_fp16()
+        .test_float_cvt_fp16()
+        ;
+}
+#endif
+
+#endif //CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY
+
+CV_CPU_OPTIMIZATION_NAMESPACE_END
+
+}} //namespace
\ No newline at end of file
diff --git a/modules/core/test/test_intrin_utils.hpp b/modules/core/test/test_intrin_utils.hpp
index 2f8c1cf0b7..5f3175bc6c 100644
--- a/modules/core/test/test_intrin_utils.hpp
+++ b/modules/core/test/test_intrin_utils.hpp
@@ -13,6 +13,27 @@ void test_hal_intrin_float16();
 template <typename R> struct Data;
 template <int N> struct initializer;
 
+template <> struct initializer<64>
+{
+    template <typename R> static R init(const Data<R> & d)
+    {
+        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15],
+        d[16], d[17], d[18], d[19], d[20], d[21], d[22], d[23], d[24], d[25], d[26], d[27], d[28], d[29], d[30], d[31],
+        d[32], d[33], d[34], d[35], d[36], d[37], d[38], d[39], d[40], d[41], d[42], d[43], d[44], d[45], d[46], d[47],
+        d[48], d[49], d[50], d[51], d[52], d[53], d[54], d[55], d[56], d[57], d[58], d[59], d[50], d[51], d[52], d[53],
+        d[54], d[55], d[56], d[57], d[58], d[59], d[60], d[61], d[62], d[63]);
+    }
+};
+
+template <> struct initializer<32>
+{
+    template <typename R> static R init(const Data<R> & d)
+    {
+        return R(d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15],
+        d[16], d[17], d[18], d[19], d[20], d[21], d[22], d[23], d[24], d[25], d[26], d[27], d[28], d[29], d[30], d[31]);
+    }
+};
+
 template <> struct initializer<16>
 {
     template <typename R> static R init(const Data<R> & d)
@@ -125,6 +146,17 @@ template <typename R> struct Data
     {
         return d + R::nlanes / 2;
     }
+    LaneType sum(int s, int c)
+    {
+        LaneType res = 0;
+        for (int i = s; i < s + c; ++i)
+            res += d[i];
+        return res;
+    }
+    LaneType sum()
+    {
+        return sum(0, R::nlanes);
+    }
     bool operator==(const Data<R> & other) const
     {
         for (int i = 0; i < R::nlanes; ++i)
@@ -147,13 +179,12 @@ template <typename R> struct Data
                 return false;
         return true;
     }
-
     LaneType d[R::nlanes];
 };
 
 template<typename R> struct AlignedData
 {
-    Data<R> CV_DECL_ALIGNED(16) a; // aligned
+    Data<R> CV_DECL_ALIGNED(CV_SIMD_WIDTH) a; // aligned
     char dummy;
     Data<R> u; // unaligned
 };
@@ -207,22 +238,22 @@ template<typename R> struct TheTest
         AlignedData<R> out;
 
         // check if addresses are aligned and unaligned respectively
-        EXPECT_EQ((size_t)0, (size_t)&data.a.d % 16);
-        EXPECT_NE((size_t)0, (size_t)&data.u.d % 16);
-        EXPECT_EQ((size_t)0, (size_t)&out.a.d % 16);
-        EXPECT_NE((size_t)0, (size_t)&out.u.d % 16);
+        EXPECT_EQ((size_t)0, (size_t)&data.a.d % CV_SIMD_WIDTH);
+        EXPECT_NE((size_t)0, (size_t)&data.u.d % CV_SIMD_WIDTH);
+        EXPECT_EQ((size_t)0, (size_t)&out.a.d % CV_SIMD_WIDTH);
+        EXPECT_NE((size_t)0, (size_t)&out.u.d % CV_SIMD_WIDTH);
 
         // check some initialization methods
         R r1 = data.a;
-        R r2 = v_load(data.u.d);
-        R r3 = v_load_aligned(data.a.d);
+        R r2 = vx_load(data.u.d);
+        R r3 = vx_load_aligned(data.a.d);
         R r4(r2);
         EXPECT_EQ(data.a[0], r1.get0());
         EXPECT_EQ(data.u[0], r2.get0());
         EXPECT_EQ(data.a[0], r3.get0());
         EXPECT_EQ(data.u[0], r4.get0());
 
-        R r_low = v_load_low((LaneType*)data.u.d);
+        R r_low = vx_load_low((LaneType*)data.u.d);
         EXPECT_EQ(data.u[0], r_low.get0());
         v_store(out.u.d, r_low);
         for (int i = 0; i < R::nlanes/2; ++i)
@@ -230,7 +261,7 @@ template<typename R> struct TheTest
             EXPECT_EQ((LaneType)data.u[i], (LaneType)out.u[i]);
         }
 
-        R r_low_align8byte = v_load_low((LaneType*)((char*)data.u.d + 8));
+        R r_low_align8byte = vx_load_low((LaneType*)((char*)data.u.d + (CV_SIMD_WIDTH / 2)));
         EXPECT_EQ(data.u[R::nlanes/2], r_low_align8byte.get0());
         v_store(out.u.d, r_low_align8byte);
         for (int i = 0; i < R::nlanes/2; ++i)
@@ -255,7 +286,7 @@ template<typename R> struct TheTest
 
         // check halves load correctness
         res.clear();
-        R r6 = v_load_halves(d.d, d.mid());
+        R r6 = vx_load_halves(d.d, d.mid());
         v_store(res.d, r6);
         EXPECT_EQ(d, res);
 
@@ -270,17 +301,17 @@ template<typename R> struct TheTest
         }
 
         // reinterpret_as
-        v_uint8x16 vu8 = v_reinterpret_as_u8(r1); out.a.clear(); v_store((uchar*)out.a.d, vu8); EXPECT_EQ(data.a, out.a);
-        v_int8x16 vs8 = v_reinterpret_as_s8(r1); out.a.clear(); v_store((schar*)out.a.d, vs8); EXPECT_EQ(data.a, out.a);
-        v_uint16x8 vu16 = v_reinterpret_as_u16(r1); out.a.clear(); v_store((ushort*)out.a.d, vu16); EXPECT_EQ(data.a, out.a);
-        v_int16x8 vs16 = v_reinterpret_as_s16(r1); out.a.clear(); v_store((short*)out.a.d, vs16); EXPECT_EQ(data.a, out.a);
-        v_uint32x4 vu32 = v_reinterpret_as_u32(r1); out.a.clear(); v_store((unsigned*)out.a.d, vu32); EXPECT_EQ(data.a, out.a);
-        v_int32x4 vs32 = v_reinterpret_as_s32(r1); out.a.clear(); v_store((int*)out.a.d, vs32); EXPECT_EQ(data.a, out.a);
-        v_uint64x2 vu64 = v_reinterpret_as_u64(r1); out.a.clear(); v_store((uint64*)out.a.d, vu64); EXPECT_EQ(data.a, out.a);
-        v_int64x2 vs64 = v_reinterpret_as_s64(r1); out.a.clear(); v_store((int64*)out.a.d, vs64); EXPECT_EQ(data.a, out.a);
-        v_float32x4 vf32 = v_reinterpret_as_f32(r1); out.a.clear(); v_store((float*)out.a.d, vf32); EXPECT_EQ(data.a, out.a);
-#if CV_SIMD128_64F
-        v_float64x2 vf64 = v_reinterpret_as_f64(r1); out.a.clear(); v_store((double*)out.a.d, vf64); EXPECT_EQ(data.a, out.a);
+        v_uint8 vu8 = v_reinterpret_as_u8(r1); out.a.clear(); v_store((uchar*)out.a.d, vu8); EXPECT_EQ(data.a, out.a);
+        v_int8 vs8 = v_reinterpret_as_s8(r1); out.a.clear(); v_store((schar*)out.a.d, vs8); EXPECT_EQ(data.a, out.a);
+        v_uint16 vu16 = v_reinterpret_as_u16(r1); out.a.clear(); v_store((ushort*)out.a.d, vu16); EXPECT_EQ(data.a, out.a);
+        v_int16 vs16 = v_reinterpret_as_s16(r1); out.a.clear(); v_store((short*)out.a.d, vs16); EXPECT_EQ(data.a, out.a);
+        v_uint32 vu32 = v_reinterpret_as_u32(r1); out.a.clear(); v_store((unsigned*)out.a.d, vu32); EXPECT_EQ(data.a, out.a);
+        v_int32 vs32 = v_reinterpret_as_s32(r1); out.a.clear(); v_store((int*)out.a.d, vs32); EXPECT_EQ(data.a, out.a);
+        v_uint64 vu64 = v_reinterpret_as_u64(r1); out.a.clear(); v_store((uint64*)out.a.d, vu64); EXPECT_EQ(data.a, out.a);
+        v_int64 vs64 = v_reinterpret_as_s64(r1); out.a.clear(); v_store((int64*)out.a.d, vs64); EXPECT_EQ(data.a, out.a);
+        v_float32 vf32 = v_reinterpret_as_f32(r1); out.a.clear(); v_store((float*)out.a.d, vf32); EXPECT_EQ(data.a, out.a);
+#if CV_SIMD_64F
+        v_float64 vf64 = v_reinterpret_as_f64(r1); out.a.clear(); v_store((double*)out.a.d, vf64); EXPECT_EQ(data.a, out.a);
 #endif
 
         return *this;
@@ -357,7 +388,7 @@ template<typename R> struct TheTest
         Data<R> dataA;
         R a = dataA;
 
-        Data<Rx2> resB = v_load_expand(dataA.d);
+        Data<Rx2> resB = vx_load_expand(dataA.d);
 
         Rx2 c, d;
         v_expand(a, c, d);
@@ -378,7 +409,7 @@ template<typename R> struct TheTest
     {
         typedef typename V_RegTraits<R>::q_reg Rx4;
         Data<R> data;
-        Data<Rx4> out = v_load_expand_q(data.d);
+        Data<Rx4> out = vx_load_expand_q(data.d);
         const int n = Rx4::nlanes;
         for (int i = 0; i < n; ++i)
             EXPECT_EQ(data[i], out[i]);
@@ -610,7 +641,13 @@ template<typename R> struct TheTest
 
     TheTest & test_popcount()
     {
-        static unsigned popcountTable[] = {0, 1, 2, 4, 5, 7, 9, 12, 13, 15, 17, 20, 22, 25, 28, 32, 33};
+        static unsigned popcountTable[] = {
+            0, 1, 2, 4, 5, 7, 9, 12, 13, 15, 17, 20, 22, 25, 28, 32, 33,
+            35, 37, 40, 42, 45, 48, 52, 54, 57, 60, 64, 67, 71, 75, 80, 81,
+            83, 85, 88, 90, 93, 96, 100, 102, 105, 108, 112, 115, 119, 123,
+            128, 130, 133, 136, 140, 143, 147, 151, 156, 159, 163, 167, 172,
+            176, 181, 186, 192, 193
+        };
         Data<R> dataA;
         R a = dataA;
 
@@ -918,7 +955,7 @@ template<typename R> struct TheTest
 
     TheTest & test_float_cvt32()
     {
-        typedef v_float32x4 Rt;
+        typedef v_float32 Rt;
         Data<R> dataA;
         dataA *= 1.1;
         R a = dataA;
@@ -934,8 +971,8 @@ template<typename R> struct TheTest
 
     TheTest & test_float_cvt64()
     {
-#if CV_SIMD128_64F
-        typedef v_float64x2 Rt;
+#if CV_SIMD_64F
+        typedef v_float64 Rt;
         Data<R> dataA;
         dataA *= 1.1;
         R a = dataA;
@@ -965,23 +1002,29 @@ template<typename R> struct TheTest
         R v = dataV, a = dataA, b = dataB, c = dataC, d = dataD;
 
         Data<R> res = v_matmul(v, a, b, c, d);
-        for (int i = 0; i < R::nlanes; ++i)
+        for (int i = 0; i < R::nlanes; i += 4)
         {
-            LaneType val = dataV[0] * dataA[i]
-                                      + dataV[1] * dataB[i]
-                                      + dataV[2] * dataC[i]
-                                      + dataV[3] * dataD[i];
-            EXPECT_DOUBLE_EQ(val, res[i]);
+            for (int j = i; j < i + 4; ++j)
+            {
+                LaneType val = dataV[i]     * dataA[j]
+                             + dataV[i + 1] * dataB[j]
+                             + dataV[i + 2] * dataC[j]
+                             + dataV[i + 3] * dataD[j];
+                EXPECT_COMPARE_EQ(val, res[j]);
+            }
         }
 
         Data<R> resAdd = v_matmuladd(v, a, b, c, d);
-        for (int i = 0; i < R::nlanes; ++i)
+        for (int i = 0; i < R::nlanes; i += 4)
         {
-            LaneType val = dataV[0] * dataA[i]
-                                      + dataV[1] * dataB[i]
-                                      + dataV[2] * dataC[i]
-                                      + dataD[i];
-            EXPECT_DOUBLE_EQ(val, resAdd[i]);
+            for (int j = i; j < i + 4; ++j)
+            {
+                LaneType val = dataV[i]     * dataA[j]
+                             + dataV[i + 1] * dataB[j]
+                             + dataV[i + 2] * dataC[j]
+                             + dataD[j];
+                EXPECT_COMPARE_EQ(val, resAdd[j]);
+            }
         }
         return *this;
     }
@@ -998,30 +1041,36 @@ template<typename R> struct TheTest
                        e, f, g, h);
 
         Data<R> res[4] = {e, f, g, h};
-        for (int i = 0; i < R::nlanes; ++i)
+        for (int i = 0; i < R::nlanes; i += 4)
         {
-            EXPECT_EQ(dataA[i], res[i][0]);
-            EXPECT_EQ(dataB[i], res[i][1]);
-            EXPECT_EQ(dataC[i], res[i][2]);
-            EXPECT_EQ(dataD[i], res[i][3]);
+            for (int j = 0; j < 4; ++j)
+            {
+                EXPECT_EQ(dataA[i + j], res[j][i]);
+                EXPECT_EQ(dataB[i + j], res[j][i + 1]);
+                EXPECT_EQ(dataC[i + j], res[j][i + 2]);
+                EXPECT_EQ(dataD[i + j], res[j][i + 3]);
+            }
         }
         return *this;
     }
 
     TheTest & test_reduce_sum4()
     {
-        R a(0.1f, 0.02f, 0.003f, 0.0004f);
-        R b(1, 20, 300, 4000);
-        R c(10, 2, 0.3f, 0.04f);
-        R d(1, 2, 3, 4);
-
-        R sum = v_reduce_sum4(a, b, c, d);
-
-        Data<R> res = sum;
-        EXPECT_EQ(0.1234f, res[0]);
-        EXPECT_EQ(4321.0f, res[1]);
-        EXPECT_EQ(12.34f, res[2]);
-        EXPECT_EQ(10.0f, res[3]);
+        Data<R> dataA, dataB, dataC, dataD;
+        dataB *= 0.01f;
+        dataC *= 0.001f;
+        dataD *= 0.002f;
+
+        R a = dataA, b = dataB, c = dataC, d = dataD;
+        Data<R> res = v_reduce_sum4(a, b, c, d);
+
+        for (int i = 0; i < R::nlanes; i += 4)
+        {
+            EXPECT_COMPARE_EQ(dataA.sum(i, 4), res[i]);
+            EXPECT_COMPARE_EQ(dataB.sum(i, 4), res[i + 1]);
+            EXPECT_COMPARE_EQ(dataC.sum(i, 4), res[i + 2]);
+            EXPECT_COMPARE_EQ(dataD.sum(i, 4), res[i + 3]);
+        }
         return *this;
     }
 
@@ -1032,14 +1081,14 @@ template<typename R> struct TheTest
         AlignedData<R> out;
 
         // check if addresses are aligned and unaligned respectively
-        EXPECT_EQ((size_t)0, (size_t)&data.a.d % 16);
-        EXPECT_NE((size_t)0, (size_t)&data.u.d % 16);
-        EXPECT_EQ((size_t)0, (size_t)&out.a.d % 16);
-        EXPECT_NE((size_t)0, (size_t)&out.u.d % 16);
+        EXPECT_EQ((size_t)0, (size_t)&data.a.d % CV_SIMD_WIDTH);
+        EXPECT_NE((size_t)0, (size_t)&data.u.d % CV_SIMD_WIDTH);
+        EXPECT_EQ((size_t)0, (size_t)&out.a.d % CV_SIMD_WIDTH);
+        EXPECT_NE((size_t)0, (size_t)&out.u.d % CV_SIMD_WIDTH);
 
         // check some initialization methods
         R r1 = data.u;
-        R r2 = v_load_f16(data.a.d);
+        R r2 = vx_load_f16(data.a.d);
         R r3(r2);
         EXPECT_EQ(data.u[0], r1.get0());
         EXPECT_EQ(data.a[0], r2.get0());
diff --git a/modules/core/test/test_rand.cpp b/modules/core/test/test_rand.cpp
index 6504649842..49062ff7c7 100644
--- a/modules/core/test/test_rand.cpp
+++ b/modules/core/test/test_rand.cpp
@@ -173,7 +173,6 @@ void Core_RandTest::run( int )
                 dsz = slice+1 < maxSlice ? (int)(cvtest::randInt(rng) % (SZ - sz) + 1) : SZ - sz;
                 Mat aslice = arr[k].colRange(sz, sz + dsz);
                 tested_rng.fill(aslice, dist_type, A, B);
-                //printf("%d - %d\n", sz, sz + dsz);
             }
         }
 
diff --git a/modules/dnn/CMakeLists.txt b/modules/dnn/CMakeLists.txt
index a4cdc18cf7..64fefb3509 100644
--- a/modules/dnn/CMakeLists.txt
+++ b/modules/dnn/CMakeLists.txt
@@ -85,12 +85,6 @@ else()
   set(sources_options EXCLUDE_OPENCL)
 endif()
 
-if(HAVE_INF_ENGINE)
-  add_definitions(-DHAVE_INF_ENGINE=1)
-  list(APPEND include_dirs ${INF_ENGINE_INCLUDE_DIRS})
-  list(APPEND libs ${INF_ENGINE_LIBRARIES})
-endif()
-
 ocv_module_include_directories(${include_dirs})
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   ocv_append_source_files_cxx_compiler_options(fw_srcs "-Wno-suggest-override")  # GCC
@@ -98,9 +92,9 @@ elseif(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   ocv_append_source_files_cxx_compiler_options(fw_srcs "-Wno-inconsistent-missing-override")  # Clang
 endif()
 ocv_glob_module_sources(${sources_options} SOURCES ${fw_srcs})
-ocv_create_module(${libs})
+ocv_create_module(${libs} ${INF_ENGINE_TARGET})
 ocv_add_samples()
-ocv_add_accuracy_tests()
+ocv_add_accuracy_tests(${INF_ENGINE_TARGET})
 ocv_add_perf_tests()
 
 ocv_option(${the_module}_PERF_CAFFE "Add performance tests of Caffe framework" OFF)
@@ -120,9 +114,3 @@ if(BUILD_PERF_TESTS)
     endif()
   endif()
 endif()
-
-# Test Intel's Inference Engine models
-if(HAVE_INF_ENGINE AND TARGET opencv_test_dnn)
-  ocv_target_include_directories(opencv_test_dnn PRIVATE ${INF_ENGINE_INCLUDE_DIRS})
-  ocv_target_link_libraries(opencv_test_dnn LINK_PRIVATE ${INF_ENGINE_LIBRARIES})
-endif()
diff --git a/modules/dnn/include/opencv2/dnn/dnn.hpp b/modules/dnn/include/opencv2/dnn/dnn.hpp
index 0809891942..c737177128 100644
--- a/modules/dnn/include/opencv2/dnn/dnn.hpp
+++ b/modules/dnn/include/opencv2/dnn/dnn.hpp
@@ -201,7 +201,7 @@ CV__DNN_EXPERIMENTAL_NS_BEGIN
          *  @param[out] outputs allocated output blobs, which will store results of the computation.
          *  @param[out] internals allocated internal blobs
          */
-        virtual void forward(InputArrayOfArrays inputs, OutputArrayOfArrays outputs, OutputArrayOfArrays internals) = 0;
+        virtual void forward(InputArrayOfArrays inputs, OutputArrayOfArrays outputs, OutputArrayOfArrays internals);
 
         /** @brief Given the @p input blobs, computes the output @p blobs.
          *  @param[in]  inputs  the input blobs.
diff --git a/modules/dnn/include/opencv2/dnn/shape_utils.hpp b/modules/dnn/include/opencv2/dnn/shape_utils.hpp
index 1e2332cf10..953a437dc2 100644
--- a/modules/dnn/include/opencv2/dnn/shape_utils.hpp
+++ b/modules/dnn/include/opencv2/dnn/shape_utils.hpp
@@ -44,7 +44,9 @@
 
 #include <opencv2/core.hpp>
 #include <opencv2/core/types_c.h>
+#include <iostream>
 #include <ostream>
+#include <sstream>
 
 namespace cv {
 namespace dnn {
@@ -178,13 +180,25 @@ static inline MatShape concat(const MatShape& a, const MatShape& b)
     return c;
 }
 
-inline void print(const MatShape& shape, const String& name = "")
+static inline std::string toString(const MatShape& shape, const String& name = "")
 {
-    printf("%s: [", name.c_str());
-    size_t i, n = shape.size();
-    for( i = 0; i < n; i++ )
-        printf(" %d", shape[i]);
-    printf(" ]\n");
+    std::ostringstream ss;
+    if (!name.empty())
+        ss << name << ' ';
+    ss << '[';
+    for(size_t i = 0, n = shape.size(); i < n; ++i)
+        ss << ' ' << shape[i];
+    ss << " ]";
+    return ss.str();
+}
+static inline void print(const MatShape& shape, const String& name = "")
+{
+    std::cout << toString(shape, name) << std::endl;
+}
+static inline std::ostream& operator<<(std::ostream &out, const MatShape& shape)
+{
+    out << toString(shape);
+    return out;
 }
 
 inline int clamp(int ax, int dims)
diff --git a/modules/dnn/src/dnn.cpp b/modules/dnn/src/dnn.cpp
index 5014365fdd..5920edc85e 100644
--- a/modules/dnn/src/dnn.cpp
+++ b/modules/dnn/src/dnn.cpp
@@ -74,6 +74,10 @@ static int PARAM_DNN_BACKEND_DEFAULT = (int)utils::getConfigurationParameterSize
 #endif
 );
 
+// Additional checks (slowdowns execution!)
+static bool DNN_CHECK_NAN_INF = utils::getConfigurationParameterBool("OPENCV_DNN_CHECK_NAN_INF", false);
+static bool DNN_CHECK_NAN_INF_DUMP = utils::getConfigurationParameterBool("OPENCV_DNN_CHECK_NAN_INF_DUMP", false);
+static bool DNN_CHECK_NAN_INF_RAISE_ERROR = utils::getConfigurationParameterBool("OPENCV_DNN_CHECK_NAN_INF_RAISE_ERROR", false);
 
 using std::vector;
 using std::map;
@@ -2053,10 +2057,75 @@ struct Net::Impl
             {
                 if (preferableBackend == DNN_BACKEND_OPENCV && IS_DNN_OPENCL_TARGET(preferableTarget))
                 {
+                    std::vector<UMat> umat_inputBlobs = OpenCLBackendWrapper::getUMatVector(ld.inputBlobsWrappers);
                     std::vector<UMat> umat_outputBlobs = OpenCLBackendWrapper::getUMatVector(ld.outputBlobsWrappers);
-                    layer->forward(OpenCLBackendWrapper::getUMatVector(ld.inputBlobsWrappers),
+                    std::vector<UMat> umat_internalBlobs = OpenCLBackendWrapper::getUMatVector(ld.internalBlobsWrappers);
+                    layer->forward(umat_inputBlobs,
                                    umat_outputBlobs,
-                                   OpenCLBackendWrapper::getUMatVector(ld.internalBlobsWrappers));
+                                   umat_internalBlobs);
+                    if (DNN_CHECK_NAN_INF)
+                    {
+                        bool fail = false;
+                        for (size_t i = 0; i < umat_outputBlobs.size(); ++i)
+                        {
+                            UMat& u = umat_outputBlobs[i];
+                            Mat m;
+                            if (u.depth() == CV_16S) // FP16
+                                convertFp16(u, m);
+                            else
+                                m = u.getMat(ACCESS_READ);
+                            if (!checkRange(m))
+                            {
+                                std::cerr << "WARNING: NaN detected in layer output: id=" << ld.id << " name=" << layer->name << std::endl;
+                                std::cerr << "output id=" << i << " output shape=" << shape(m) << std::endl;
+                                fail = true;
+                            }
+                            else if (!checkRange(m, true, NULL, -1e6, 1e6))
+                            {
+                                std::cerr << "WARNING: Inf detected in layer output: id=" << ld.id << " name=" << layer->name << std::endl;
+                                std::cerr << "output id=" << i << " output shape=" << shape(m) << std::endl;
+                                fail = true;
+                            }
+                        }
+                        if (fail)
+                        {
+                            for (size_t i = 0; i < umat_inputBlobs.size(); ++i)
+                            {
+                                UMat& u = umat_inputBlobs[i];
+                                Mat m;
+                                if (u.depth() == CV_16S) // FP16
+                                    convertFp16(u, m);
+                                else
+                                    m = u.getMat(ACCESS_READ);
+                                std::cout << "INPUT " << i << " " << cv::typeToString(u.type()) << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << m.reshape(1, 1) << std::endl;
+                            }
+                            for (size_t i = 0; i < umat_outputBlobs.size(); ++i)
+                            {
+                                UMat& u = umat_outputBlobs[i];
+                                Mat m;
+                                if (u.depth() == CV_16S) // FP16
+                                    convertFp16(u, m);
+                                else
+                                    m = u.getMat(ACCESS_READ);
+                                std::cout << "OUTPUT " << i << " " << cv::typeToString(u.type()) << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << m.reshape(1, 1) << std::endl;
+                            }
+                            for (size_t i = 0; i < umat_internalBlobs.size(); ++i)
+                            {
+                                UMat& u = umat_internalBlobs[i];
+                                Mat m;
+                                if (u.depth() == CV_16S) // FP16
+                                    convertFp16(u, m);
+                                else
+                                    m = u.getMat(ACCESS_READ);
+                                std::cout << "INTERNAL " << i << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << cv::typeToString(u.type()) << " " << m.reshape(1, 1) << std::endl;
+                            }
+                            if (DNN_CHECK_NAN_INF_RAISE_ERROR)
+                                CV_Assert(!fail);
+                        }
+                    }
                     OpenCLBackendWrapper::update(ld.outputBlobsWrappers, umat_outputBlobs);
                 }
                 else
@@ -2069,6 +2138,56 @@ struct Net::Impl
 
                     layer->forward(ld.inputBlobs, ld.outputBlobs, ld.internals);
 
+                    if (DNN_CHECK_NAN_INF)
+                    {
+                        bool fail = false;
+                        for (size_t i = 0; i < ld.outputBlobs.size(); ++i)
+                        {
+                            const Mat& m = ld.outputBlobs[i];
+                            if (!checkRange(m))
+                            {
+                                std::cerr << "WARNING: NaN detected in layer output: id=" << ld.id << " name=" << layer->name << std::endl;
+                                std::cerr << "output id=" << i << " output shape=" << shape(m) << std::endl;
+                                fail = true;
+                            }
+                            else if (!checkRange(m, true, NULL, -1e6, 1e6))
+                            {
+                                std::cerr << "WARNING: Inf detected in layer output: id=" << ld.id << " name=" << layer->name << std::endl;
+                                std::cerr << "output id=" << i << " output shape=" << shape(m) << std::endl;
+                                fail = true;
+                            }
+                        }
+                        if (fail)
+                        {
+                            for (size_t i = 0; i < ld.inputBlobs.size(); ++i)
+                            {
+                                const Mat* pM = ld.inputBlobs[i];
+                                if (!pM)
+                                {
+                                    std::cout << "INPUT " << i << " is NULL" << std::endl;
+                                    continue;
+                                }
+                                const Mat& m = *pM;
+                                std::cout << "INPUT " << i << " " << cv::typeToString(m.type()) << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << m.reshape(1, 1) << std::endl;
+                            }
+                            for (size_t i = 0; i < ld.outputBlobs.size(); ++i)
+                            {
+                                const Mat& m = ld.outputBlobs[i];
+                                std::cout << "OUTPUT " << i << " " << cv::typeToString(m.type()) << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << m.reshape(1, 1) << std::endl;
+                            }
+                            for (size_t i = 0; i < ld.internals.size(); ++i)
+                            {
+                                const Mat& m = ld.internals[i];
+                                std::cout << "INTERNAL " << i << " " << cv::typeToString(m.type()) << " " << shape(m) << std::endl;
+                                if (DNN_CHECK_NAN_INF_DUMP) std::cout << m.reshape(1, 1) << std::endl;
+                            }
+                            if (DNN_CHECK_NAN_INF_RAISE_ERROR)
+                                CV_Assert(!fail);
+                        }
+                    }
+
                     for (int i = 0, n = ld.outputBlobsWrappers.size(); i < n; ++i)
                     {
                         if (!ld.outputBlobsWrappers[i].empty())
@@ -3071,6 +3190,14 @@ std::vector<Mat> Layer::finalize(const std::vector<Mat> &inputs)
     return outputs;
 }
 
+void Layer::forward(InputArrayOfArrays inputs, OutputArrayOfArrays outputs, OutputArrayOfArrays internals)
+{
+    CV_TRACE_FUNCTION();
+    CV_TRACE_ARG_VALUE(name, "name", name.c_str());
+
+    Layer::forward_fallback(inputs, outputs, internals);
+}
+
 void Layer::forward_fallback(InputArrayOfArrays inputs_arr, OutputArrayOfArrays outputs_arr, OutputArrayOfArrays internals_arr)
 {
     CV_TRACE_FUNCTION();
diff --git a/modules/dnn/src/layers/detection_output_layer.cpp b/modules/dnn/src/layers/detection_output_layer.cpp
index f4d4d2b822..7473751707 100644
--- a/modules/dnn/src/layers/detection_output_layer.cpp
+++ b/modules/dnn/src/layers/detection_output_layer.cpp
@@ -196,7 +196,7 @@ public:
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
         return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && !_locPredTransposed;
+               backendId == DNN_BACKEND_INFERENCE_ENGINE && !_locPredTransposed && _bboxesNormalized;
     }
 
     bool getMemoryShapes(const std::vector<MatShape> &inputs,
@@ -411,9 +411,12 @@ public:
         CV_TRACE_FUNCTION();
         CV_TRACE_ARG_VALUE(name, "name", name.c_str());
 
-        CV_OCL_RUN(IS_DNN_OPENCL_TARGET(preferableTarget) &&
-                   OCL_PERFORMANCE_CHECK(ocl::Device::getDefault().isIntel()),
-                   forward_ocl(inputs_arr, outputs_arr, internals_arr))
+        if (_bboxesNormalized)
+        {
+            CV_OCL_RUN(IS_DNN_OPENCL_TARGET(preferableTarget) &&
+                       OCL_PERFORMANCE_CHECK(ocl::Device::getDefault().isIntel()),
+                       forward_ocl(inputs_arr, outputs_arr, internals_arr))
+        }
 
         Layer::forward_fallback(inputs_arr, outputs_arr, internals_arr);
     }
@@ -916,6 +919,7 @@ public:
         ieLayer->params["nms_threshold"] = format("%f", _nmsThreshold);
         ieLayer->params["top_k"] = format("%d", _topK);
         ieLayer->params["keep_top_k"] = format("%d", _keepTopK);
+        ieLayer->params["eta"] = "1.0";
         ieLayer->params["confidence_threshold"] = format("%f", _confidenceThreshold);
         ieLayer->params["variance_encoded_in_target"] = _varianceEncodedInTarget ? "1" : "0";
         ieLayer->params["code_type"] = "caffe.PriorBoxParameter." + _codeType;
diff --git a/modules/dnn/src/layers/pooling_layer.cpp b/modules/dnn/src/layers/pooling_layer.cpp
index 775a044b44..4e0fea21d8 100644
--- a/modules/dnn/src/layers/pooling_layer.cpp
+++ b/modules/dnn/src/layers/pooling_layer.cpp
@@ -135,10 +135,17 @@ public:
 
     virtual bool supportBackend(int backendId) CV_OVERRIDE
     {
-        return backendId == DNN_BACKEND_OPENCV ||
-               backendId == DNN_BACKEND_HALIDE && haveHalide() &&
-               (type == MAX || type == AVE && !pad.width && !pad.height) ||
-               backendId == DNN_BACKEND_INFERENCE_ENGINE && haveInfEngine() && (type == MAX || type == AVE);
+        if (backendId == DNN_BACKEND_INFERENCE_ENGINE)
+        {
+            if (preferableTarget == DNN_TARGET_MYRIAD)
+                return type == MAX || type == AVE;
+            else
+                return type != STOCHASTIC;
+        }
+        else
+            return backendId == DNN_BACKEND_OPENCV ||
+                   backendId == DNN_BACKEND_HALIDE && haveHalide() &&
+                   (type == MAX || type == AVE && !pad.width && !pad.height);
     }
 
 #ifdef HAVE_OPENCL
@@ -192,8 +199,11 @@ public:
         CV_TRACE_FUNCTION();
         CV_TRACE_ARG_VALUE(name, "name", name.c_str());
 
-        CV_OCL_RUN(IS_DNN_OPENCL_TARGET(preferableTarget),
-                   forward_ocl(inputs_arr, outputs_arr, internals_arr))
+        if (type == MAX || type == AVE || type == STOCHASTIC)
+        {
+            CV_OCL_RUN(IS_DNN_OPENCL_TARGET(preferableTarget),
+                       forward_ocl(inputs_arr, outputs_arr, internals_arr))
+        }
 
         Layer::forward_fallback(inputs_arr, outputs_arr, internals_arr);
     }
@@ -238,22 +248,41 @@ public:
 #ifdef HAVE_INF_ENGINE
         InferenceEngine::LayerParams lp;
         lp.name = name;
-        lp.type = "Pooling";
         lp.precision = InferenceEngine::Precision::FP32;
-        std::shared_ptr<InferenceEngine::PoolingLayer> ieLayer(new InferenceEngine::PoolingLayer(lp));
-
-        ieLayer->_kernel_x = kernel.width;
-        ieLayer->_kernel_y = kernel.height;
-        ieLayer->_stride_x = stride.width;
-        ieLayer->_stride_y = stride.height;
-        ieLayer->_padding_x = pad.width;
-        ieLayer->_padding_y = pad.height;
-        ieLayer->_exclude_pad = type == AVE && padMode == "SAME";
-        ieLayer->params["rounding-type"] = ceilMode ? "ceil" : "floor";
-        if (type == MAX)
-            ieLayer->_type = InferenceEngine::PoolingLayer::PoolType::MAX;
-        else if (type == AVE)
-            ieLayer->_type = InferenceEngine::PoolingLayer::PoolType::AVG;
+
+        std::shared_ptr<InferenceEngine::CNNLayer> ieLayer;
+        if (type == MAX || type == AVE)
+        {
+            lp.type = "Pooling";
+            InferenceEngine::PoolingLayer* poolLayer = new InferenceEngine::PoolingLayer(lp);
+            poolLayer->_kernel_x = kernel.width;
+            poolLayer->_kernel_y = kernel.height;
+            poolLayer->_stride_x = stride.width;
+            poolLayer->_stride_y = stride.height;
+            poolLayer->_padding_x = pad.width;
+            poolLayer->_padding_y = pad.height;
+            poolLayer->_exclude_pad = type == AVE && padMode == "SAME";
+            poolLayer->params["rounding-type"] = ceilMode ? "ceil" : "floor";
+            poolLayer->_type = type == MAX ? InferenceEngine::PoolingLayer::PoolType::MAX :
+                                             InferenceEngine::PoolingLayer::PoolType::AVG;
+            ieLayer = std::shared_ptr<InferenceEngine::CNNLayer>(poolLayer);
+        }
+        else if (type == ROI)
+        {
+            lp.type = "ROIPooling";
+            ieLayer = std::shared_ptr<InferenceEngine::CNNLayer>(new InferenceEngine::CNNLayer(lp));
+            ieLayer->params["pooled_w"] = format("%d", pooledSize.width);
+            ieLayer->params["pooled_h"] = format("%d", pooledSize.height);
+            ieLayer->params["spatial_scale"] = format("%f", spatialScale);
+        }
+        else if (type == PSROI)
+        {
+            lp.type = "PSROIPooling";
+            ieLayer = std::shared_ptr<InferenceEngine::CNNLayer>(new InferenceEngine::CNNLayer(lp));
+            ieLayer->params["output_dim"] = format("%d", psRoiOutChannels);
+            ieLayer->params["group_size"] = format("%d", pooledSize.width);
+            ieLayer->params["spatial_scale"] = format("%f", spatialScale);
+        }
         else
             CV_Error(Error::StsNotImplemented, "Unsupported pooling type");
 
diff --git a/modules/dnn/src/layers/proposal_layer.cpp b/modules/dnn/src/layers/proposal_layer.cpp
index 44671268a7..cdc5e2250a 100644
--- a/modules/dnn/src/layers/proposal_layer.cpp
+++ b/modules/dnn/src/layers/proposal_layer.cpp
@@ -6,6 +6,7 @@
 // Third party copyrights are property of their respective owners.
 #include "../precomp.hpp"
 #include "layers_common.hpp"
+#include "../op_inf_engine.hpp"
 
 namespace cv { namespace dnn {
 
@@ -16,14 +17,14 @@ public:
     {
         setParamsFrom(params);
 
-        uint32_t featStride = params.get<uint32_t>("feat_stride", 16);
-        uint32_t baseSize = params.get<uint32_t>("base_size", 16);
+        featStride = params.get<uint32_t>("feat_stride", 16);
+        baseSize = params.get<uint32_t>("base_size", 16);
         // uint32_t minSize = params.get<uint32_t>("min_size", 16);
-        uint32_t keepTopBeforeNMS = params.get<uint32_t>("pre_nms_topn", 6000);
+        keepTopBeforeNMS = params.get<uint32_t>("pre_nms_topn", 6000);
         keepTopAfterNMS = params.get<uint32_t>("post_nms_topn", 300);
-        float nmsThreshold = params.get<float>("nms_thresh", 0.7);
-        DictValue ratios = params.get("ratio");
-        DictValue scales = params.get("scale");
+        nmsThreshold = params.get<float>("nms_thresh", 0.7);
+        ratios = params.get("ratio");
+        scales = params.get("scale");
 
         {
             LayerParams lp;
@@ -83,6 +84,12 @@ public:
         }
     }
 
+    virtual bool supportBackend(int backendId) CV_OVERRIDE
+    {
+        return backendId == DNN_BACKEND_OPENCV ||
+               backendId == DNN_BACKEND_INFERENCE_ENGINE && preferableTarget != DNN_TARGET_MYRIAD;
+    }
+
     bool getMemoryShapes(const std::vector<MatShape> &inputs,
                          const int requiredOutputs,
                          std::vector<MatShape> &outputs,
@@ -312,6 +319,38 @@ public:
                 outputs[i].rowRange(numDets, keepTopAfterNMS).setTo(0);
     }
 
+    virtual Ptr<BackendNode> initInfEngine(const std::vector<Ptr<BackendWrapper> >&) CV_OVERRIDE
+    {
+#ifdef HAVE_INF_ENGINE
+        InferenceEngine::LayerParams lp;
+        lp.name = name;
+        lp.type = "Proposal";
+        lp.precision = InferenceEngine::Precision::FP32;
+        std::shared_ptr<InferenceEngine::CNNLayer> ieLayer(new InferenceEngine::CNNLayer(lp));
+
+        ieLayer->params["base_size"] = format("%d", baseSize);
+        ieLayer->params["feat_stride"] = format("%d", featStride);
+        ieLayer->params["min_size"] = "16";
+        ieLayer->params["nms_thresh"] = format("%f", nmsThreshold);
+        ieLayer->params["post_nms_topn"] = format("%d", keepTopAfterNMS);
+        ieLayer->params["pre_nms_topn"] = format("%d", keepTopBeforeNMS);
+        if (ratios.size())
+        {
+            ieLayer->params["ratio"] = format("%f", ratios.get<float>(0));
+            for (int i = 1; i < ratios.size(); ++i)
+                ieLayer->params["ratio"] += format(",%f", ratios.get<float>(i));
+        }
+        if (scales.size())
+        {
+            ieLayer->params["scale"] = format("%f", scales.get<float>(0));
+            for (int i = 1; i < scales.size(); ++i)
+                ieLayer->params["scale"] += format(",%f", scales.get<float>(i));
+        }
+        return Ptr<BackendNode>(new InfEngineBackendNode(ieLayer));
+#endif  // HAVE_INF_ENGINE
+        return Ptr<BackendNode>();
+    }
+
 private:
     // A first half of channels are background scores. We need only a second one.
     static Mat getObjectScores(const Mat& m)
@@ -342,8 +381,10 @@ private:
 
     Ptr<PermuteLayer> deltasPermute;
     Ptr<PermuteLayer> scoresPermute;
-    uint32_t keepTopAfterNMS;
+    uint32_t keepTopBeforeNMS, keepTopAfterNMS, featStride, baseSize;
     Mat fakeImageBlob;
+    float nmsThreshold;
+    DictValue ratios, scales;
 #ifdef HAVE_OPENCL
     UMat umat_fakeImageBlob;
 #endif
diff --git a/modules/dnn/src/ocl4dnn/src/ocl4dnn_pool.cpp b/modules/dnn/src/ocl4dnn/src/ocl4dnn_pool.cpp
index 8b74248b64..77cd3a6337 100644
--- a/modules/dnn/src/ocl4dnn/src/ocl4dnn_pool.cpp
+++ b/modules/dnn/src/ocl4dnn/src/ocl4dnn_pool.cpp
@@ -183,8 +183,9 @@ bool OCL4DNNPool<Dtype>::Forward(const UMat& bottom,
             ocl::Kernel oclk_sto_pool_forward(
                 kname.c_str(),
                 ocl::dnn::ocl4dnn_pooling_oclsrc,
-                format("-D KERNEL_STO_POOL=1 -D KERNEL_W=%d -D KERNEL_H=%d"
+                format(" -D Dtype=%s -D KERNEL_STO_POOL=1 -D KERNEL_W=%d -D KERNEL_H=%d"
                        " -D STRIDE_W=%d -D STRIDE_H=%d",
+                       (use_half) ? "half" : "float",
                        kernel_w_, kernel_h_,
                        stride_w_, stride_h_
                 ));
diff --git a/modules/dnn/src/op_inf_engine.cpp b/modules/dnn/src/op_inf_engine.cpp
index a7c13f3a13..7d94b9d54a 100644
--- a/modules/dnn/src/op_inf_engine.cpp
+++ b/modules/dnn/src/op_inf_engine.cpp
@@ -322,12 +322,32 @@ InferenceEngine::StatusCode InfEngineBackendNet::setBatchSize(const size_t) noex
     return InferenceEngine::StatusCode::OK;
 }
 
+InferenceEngine::StatusCode InfEngineBackendNet::setBatchSize(size_t size, InferenceEngine::ResponseDesc *responseDesc) noexcept
+{
+    CV_Error(Error::StsNotImplemented, "");
+    return InferenceEngine::StatusCode::OK;
+}
+
 size_t InfEngineBackendNet::getBatchSize() const noexcept
 {
     CV_Error(Error::StsNotImplemented, "");
     return 0;
 }
 
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R2)
+InferenceEngine::StatusCode InfEngineBackendNet::AddExtension(const InferenceEngine::IShapeInferExtensionPtr &extension, InferenceEngine::ResponseDesc *resp) noexcept
+{
+    CV_Error(Error::StsNotImplemented, "");
+    return InferenceEngine::StatusCode::OK;
+}
+
+InferenceEngine::StatusCode InfEngineBackendNet::reshape(const InferenceEngine::ICNNNetwork::InputShapes &inputShapes, InferenceEngine::ResponseDesc *resp) noexcept
+{
+    CV_Error(Error::StsNotImplemented, "");
+    return InferenceEngine::StatusCode::OK;
+}
+#endif
+
 void InfEngineBackendNet::init(int targetId)
 {
     if (inputs.empty())
diff --git a/modules/dnn/src/op_inf_engine.hpp b/modules/dnn/src/op_inf_engine.hpp
index a33d93cb03..a811f4eae7 100644
--- a/modules/dnn/src/op_inf_engine.hpp
+++ b/modules/dnn/src/op_inf_engine.hpp
@@ -9,6 +9,8 @@
 #define __OPENCV_DNN_OP_INF_ENGINE_HPP__
 
 #include "opencv2/core/cvdef.h"
+#include "opencv2/core/cvstd.hpp"
+#include "opencv2/dnn.hpp"
 
 #ifdef HAVE_INF_ENGINE
 #if defined(__GNUC__) && __GNUC__ >= 5
@@ -19,6 +21,17 @@
 #if defined(__GNUC__) && __GNUC__ >= 5
 //#pragma GCC diagnostic pop
 #endif
+
+#define INF_ENGINE_RELEASE_2018R1 2018010000
+#define INF_ENGINE_RELEASE_2018R2 2018020000
+
+#ifndef INF_ENGINE_RELEASE
+#warning("IE version have not been provided via command-line. Using 2018R2 by default")
+#define INF_ENGINE_RELEASE INF_ENGINE_RELEASE_2018R2
+#endif
+
+#define INF_ENGINE_VER_MAJOR_GT(ver) (((INF_ENGINE_RELEASE) / 10000) > ((ver) / 10000))
+
 #endif  // HAVE_INF_ENGINE
 
 namespace cv { namespace dnn {
@@ -86,8 +99,15 @@ public:
 
     virtual InferenceEngine::StatusCode setBatchSize(const size_t size) noexcept CV_OVERRIDE;
 
+    virtual InferenceEngine::StatusCode setBatchSize(size_t size, InferenceEngine::ResponseDesc* responseDesc) noexcept;
+
     virtual size_t getBatchSize() const noexcept CV_OVERRIDE;
 
+#if INF_ENGINE_VER_MAJOR_GT(INF_ENGINE_RELEASE_2018R2)
+    virtual InferenceEngine::StatusCode AddExtension(const InferenceEngine::IShapeInferExtensionPtr& extension, InferenceEngine::ResponseDesc* resp) noexcept;
+    virtual InferenceEngine::StatusCode reshape(const InputShapes& inputShapes, InferenceEngine::ResponseDesc* resp) noexcept;
+#endif
+
     void init(int targetId);
 
     void addBlobs(const std::vector<Ptr<BackendWrapper> >& wrappers);
diff --git a/modules/dnn/src/opencl/ocl4dnn_pooling.cl b/modules/dnn/src/opencl/ocl4dnn_pooling.cl
index 501f5a5e87..77d2e5ba33 100644
--- a/modules/dnn/src/opencl/ocl4dnn_pooling.cl
+++ b/modules/dnn/src/opencl/ocl4dnn_pooling.cl
@@ -104,7 +104,7 @@ __kernel void
 #elif defined KERNEL_AVE_POOL
 
 __kernel void TEMPLATE(ave_pool_forward, Dtype)(
-    const int nthreads, __global const Dtype* const bottom_data,
+    const int nthreads, __global const Dtype* bottom_data,
     const int channels, const int height, const int width,
     const int pooled_height, const int pooled_width,
     __global Dtype* top_data)
@@ -150,7 +150,7 @@ __kernel void TEMPLATE(ave_pool_forward, Dtype)(
 #elif defined KERNEL_STO_POOL
 
 __kernel void TEMPLATE(sto_pool_forward_test,Dtype)(
-    const int nthreads, __global const Dtype* const bottom_data,
+    const int nthreads, __global const Dtype* bottom_data,
     const int channels, const int height, const int width,
     const int pooled_height, const int pooled_width,
     __global Dtype* top_data)
diff --git a/modules/dnn/src/tensorflow/tf_importer.cpp b/modules/dnn/src/tensorflow/tf_importer.cpp
index 6c16502aa2..fcca577094 100644
--- a/modules/dnn/src/tensorflow/tf_importer.cpp
+++ b/modules/dnn/src/tensorflow/tf_importer.cpp
@@ -1293,7 +1293,13 @@ void TFImporter::populateNet(Net dstNet)
                     if (!next_layers.empty())
                     {
                         int maximumLayerIdx = next_layers[0].second;
-                        ExcludeLayer(net, maximumLayerIdx, 0, false);
+
+                        CV_Assert(net.node(maximumLayerIdx).input_size() == 2);
+
+                        // The input from the Mul layer can also be at index 1.
+                        int mulInputIdx = (net.node(maximumLayerIdx).input(0) == name) ? 0 : 1;
+
+                        ExcludeLayer(net, maximumLayerIdx, mulInputIdx, false);
                         layers_to_ignore.insert(next_layers[0].first);
 
                         layerParams.set("negative_slope", scaleMat.at<float>(0));
diff --git a/modules/dnn/src/torch/torch_importer.cpp b/modules/dnn/src/torch/torch_importer.cpp
index 049c83f606..52bc0ce8a3 100644
--- a/modules/dnn/src/torch/torch_importer.cpp
+++ b/modules/dnn/src/torch/torch_importer.cpp
@@ -938,6 +938,16 @@ struct TorchImporter
                 layerParams.set("end", DictValue::arrayInt<int*>(&ends[0], 4));
                 curModule->modules.push_back(newModule);
             }
+            else if (nnName == "SpatialUpSamplingNearest")
+            {
+                readTorchTable(scalarParams, tensorParams);
+                CV_Assert(scalarParams.has("scale_factor"));
+                int scale_factor = scalarParams.get<int>("scale_factor");
+                newModule->apiType = "Resize";
+                layerParams.set("interpolation", "nearest");
+                layerParams.set("zoom_factor", scale_factor);
+                curModule->modules.push_back(newModule);
+            }
             else
             {
                 // Importer does not know how to map Torch's layer type to an OpenCV's one.
diff --git a/modules/dnn/test/test_backends.cpp b/modules/dnn/test/test_backends.cpp
index 49e1a2a983..60beca272b 100644
--- a/modules/dnn/test/test_backends.cpp
+++ b/modules/dnn/test/test_backends.cpp
@@ -175,7 +175,7 @@ TEST_P(DNNTestNetwork, MobileNet_SSD_v2_TensorFlow)
     Mat sample = imread(findDataFile("dnn/street.png", false));
     Mat inp = blobFromImage(sample, 1.0f / 127.5, Size(300, 300), Scalar(127.5, 127.5, 127.5), false);
     float l1 = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.011 : 0.0;
-    float lInf = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.06 : 0.0;
+    float lInf = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.062 : 0.0;
     processNet("dnn/ssd_mobilenet_v2_coco_2018_03_29.pb", "dnn/ssd_mobilenet_v2_coco_2018_03_29.pbtxt",
                inp, "detection_out", "", l1, lInf, 0.25);
 }
@@ -233,11 +233,8 @@ TEST_P(DNNTestNetwork, opencv_face_detector)
 {
     if (backend == DNN_BACKEND_HALIDE)
         throw SkipTestException("");
-    Size inpSize;
-    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
-        inpSize = Size(300, 300);
     Mat img = imread(findDataFile("gpu/lbpcascade/er.png", false));
-    Mat inp = blobFromImage(img, 1.0, inpSize, Scalar(104.0, 177.0, 123.0), false, false);
+    Mat inp = blobFromImage(img, 1.0, Size(), Scalar(104.0, 177.0, 123.0), false, false);
     processNet("dnn/opencv_face_detector.caffemodel", "dnn/opencv_face_detector.prototxt",
                inp, "detection_out");
 }
@@ -249,7 +246,7 @@ TEST_P(DNNTestNetwork, Inception_v2_SSD_TensorFlow)
     Mat sample = imread(findDataFile("dnn/street.png", false));
     Mat inp = blobFromImage(sample, 1.0f / 127.5, Size(300, 300), Scalar(127.5, 127.5, 127.5), false);
     float l1 = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.008 : 0.0;
-    float lInf = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.07 : 0.0;
+    float lInf = (target == DNN_TARGET_OPENCL_FP16 || target == DNN_TARGET_MYRIAD) ? 0.0731 : 0.0;
     processNet("dnn/ssd_inception_v2_coco_2017_11_17.pb", "dnn/ssd_inception_v2_coco_2017_11_17.pbtxt",
                inp, "detection_out", "", l1, lInf);
 }
diff --git a/modules/dnn/test/test_caffe_importer.cpp b/modules/dnn/test/test_caffe_importer.cpp
index 5365b2a435..b957b8caf4 100644
--- a/modules/dnn/test/test_caffe_importer.cpp
+++ b/modules/dnn/test/test_caffe_importer.cpp
@@ -51,6 +51,33 @@ static std::string _tf(TString filename)
     return (getOpenCVExtraDir() + "/dnn/") + filename;
 }
 
+class Test_Caffe_nets : public DNNTestLayer
+{
+public:
+    void testFaster(const std::string& proto, const std::string& model, const Mat& ref,
+                    double scoreDiff = 0.0, double iouDiff = 0.0)
+    {
+        checkBackend();
+        Net net = readNetFromCaffe(findDataFile("dnn/" + proto, false),
+                                   findDataFile("dnn/" + model, false));
+        net.setPreferableBackend(backend);
+        net.setPreferableTarget(target);
+        Mat img = imread(findDataFile("dnn/dog416.png", false));
+        resize(img, img, Size(800, 600));
+        Mat blob = blobFromImage(img, 1.0, Size(), Scalar(102.9801, 115.9465, 122.7717), false, false);
+        Mat imInfo = (Mat_<float>(1, 3) << img.rows, img.cols, 1.6f);
+
+        net.setInput(blob, "data");
+        net.setInput(imInfo, "im_info");
+        // Output has shape 1x1xNx7 where N - number of detections.
+        // An every detection is a vector of values [id, classId, confidence, left, top, right, bottom]
+        Mat out = net.forward();
+        scoreDiff = scoreDiff ? scoreDiff : default_l1;
+        iouDiff = iouDiff ? iouDiff : default_lInf;
+        normAssertDetections(ref, out, ("model name: " + model).c_str(), 0.8, scoreDiff, iouDiff);
+    }
+};
+
 TEST(Test_Caffe, memory_read)
 {
     const string proto = findDataFile("dnn/bvlc_googlenet.prototxt", false);
@@ -344,9 +371,15 @@ TEST(Reproducibility_GoogLeNet_fp16, Accuracy)
 }
 
 // https://github.com/richzhang/colorization
-TEST(Reproducibility_Colorization, Accuracy)
+TEST_P(Test_Caffe_nets, Colorization)
 {
-    const float l1 = 3e-5;
+    checkBackend();
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_OPENCL_FP16) ||
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD) ||
+        (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+
+    const float l1 = 4e-4;
     const float lInf = 3e-3;
 
     Mat inp = blobFromNPY(_tf("colorization_inp.npy"));
@@ -356,7 +389,8 @@ TEST(Reproducibility_Colorization, Accuracy)
     const string proto = findDataFile("dnn/colorization_deploy_v2.prototxt", false);
     const string model = findDataFile("dnn/colorization_release_v2.caffemodel", false);
     Net net = readNetFromCaffe(proto, model);
-    net.setPreferableBackend(DNN_BACKEND_OPENCV);
+    net.setPreferableBackend(backend);
+    net.setPreferableTarget(target);
 
     net.getLayer(net.getLayerId("class8_ab"))->blobs.push_back(kernel);
     net.getLayer(net.getLayerId("conv8_313_rh"))->blobs.push_back(Mat(1, 313, CV_32F, 2.606));
@@ -447,39 +481,40 @@ INSTANTIATE_TEST_CASE_P(Test_Caffe, opencv_face_detector,
     )
 );
 
-TEST(Test_Caffe, FasterRCNN_and_RFCN)
+TEST_P(Test_Caffe_nets, FasterRCNN_vgg16)
 {
-    std::string models[] = {"VGG16_faster_rcnn_final.caffemodel", "ZF_faster_rcnn_final.caffemodel",
-                            "resnet50_rfcn_final.caffemodel"};
-    std::string protos[] = {"faster_rcnn_vgg16.prototxt", "faster_rcnn_zf.prototxt",
-                            "rfcn_pascal_voc_resnet50.prototxt"};
-    Mat refs[] = {(Mat_<float>(3, 7) << 0, 2, 0.949398, 99.2454, 210.141, 601.205, 462.849,
-                                        0, 7, 0.997022, 481.841, 92.3218, 722.685, 175.953,
-                                        0, 12, 0.993028, 133.221, 189.377, 350.994, 563.166),
-                  (Mat_<float>(3, 7) << 0, 2, 0.90121, 120.407, 115.83, 570.586, 528.395,
-                                        0, 7, 0.988779, 469.849, 75.1756, 718.64, 186.762,
-                                        0, 12, 0.967198, 138.588, 206.843, 329.766, 553.176),
-                  (Mat_<float>(2, 7) << 0, 7, 0.991359, 491.822, 81.1668, 702.573, 178.234,
-                                        0, 12, 0.94786, 132.093, 223.903, 338.077, 566.16)};
-    for (int i = 0; i < 3; ++i)
-    {
-        std::string proto = findDataFile("dnn/" + protos[i], false);
-        std::string model = findDataFile("dnn/" + models[i], false);
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD) ||
+        (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+    static Mat ref = (Mat_<float>(3, 7) << 0, 2, 0.949398, 99.2454, 210.141, 601.205, 462.849,
+                                           0, 7, 0.997022, 481.841, 92.3218, 722.685, 175.953,
+                                           0, 12, 0.993028, 133.221, 189.377, 350.994, 563.166);
+    testFaster("faster_rcnn_vgg16.prototxt", "VGG16_faster_rcnn_final.caffemodel", ref);
+}
 
-        Net net = readNetFromCaffe(proto, model);
-        net.setPreferableBackend(DNN_BACKEND_OPENCV);
-        Mat img = imread(findDataFile("dnn/dog416.png", false));
-        resize(img, img, Size(800, 600));
-        Mat blob = blobFromImage(img, 1.0, Size(), Scalar(102.9801, 115.9465, 122.7717), false, false);
-        Mat imInfo = (Mat_<float>(1, 3) << img.rows, img.cols, 1.6f);
+TEST_P(Test_Caffe_nets, FasterRCNN_zf)
+{
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_OPENCL_FP16) ||
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD) ||
+        (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+    static Mat ref = (Mat_<float>(3, 7) << 0, 2, 0.90121, 120.407, 115.83, 570.586, 528.395,
+                                           0, 7, 0.988779, 469.849, 75.1756, 718.64, 186.762,
+                                           0, 12, 0.967198, 138.588, 206.843, 329.766, 553.176);
+    testFaster("faster_rcnn_zf.prototxt", "ZF_faster_rcnn_final.caffemodel", ref);
+}
 
-        net.setInput(blob, "data");
-        net.setInput(imInfo, "im_info");
-        // Output has shape 1x1xNx7 where N - number of detections.
-        // An every detection is a vector of values [id, classId, confidence, left, top, right, bottom]
-        Mat out = net.forward();
-        normAssertDetections(refs[i], out, ("model name: " + models[i]).c_str(), 0.8);
-    }
+TEST_P(Test_Caffe_nets, RFCN)
+{
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_OPENCL_FP16) ||
+        (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD) ||
+        (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+    static Mat ref = (Mat_<float>(2, 7) << 0, 7, 0.991359, 491.822, 81.1668, 702.573, 178.234,
+                                           0, 12, 0.94786, 132.093, 223.903, 338.077, 566.16);
+    testFaster("rfcn_pascal_voc_resnet50.prototxt", "resnet50_rfcn_final.caffemodel", ref);
 }
 
+INSTANTIATE_TEST_CASE_P(/**/, Test_Caffe_nets, dnnBackendsAndTargets());
+
 }} // namespace
diff --git a/modules/dnn/test/test_halide_layers.cpp b/modules/dnn/test/test_halide_layers.cpp
index eda414551f..788f237b22 100644
--- a/modules/dnn/test/test_halide_layers.cpp
+++ b/modules/dnn/test/test_halide_layers.cpp
@@ -16,7 +16,7 @@ using namespace cv;
 using namespace cv::dnn;
 using namespace testing;
 
-static void test(Mat& input, Net& net, int backendId, int targetId)
+static void test(Mat& input, Net& net, Backend backendId, Target targetId, bool skipCheck = false)
 {
     DNNTestLayer::checkBackend(backendId, targetId);
     randu(input, -1.0f, 1.0f);
@@ -29,16 +29,19 @@ static void test(Mat& input, Net& net, int backendId, int targetId)
     net.setPreferableTarget(targetId);
     Mat outputHalide = net.forward().clone();
 
+    if (skipCheck)
+        return;
+
     double l1, lInf;
     DNNTestLayer::getDefaultThresholds(backendId, targetId, &l1, &lInf);
     normAssert(outputDefault, outputHalide, "", l1, lInf);
 }
 
-static void test(LayerParams& params, Mat& input, int backendId, int targetId)
+static void test(LayerParams& params, Mat& input, Backend backendId, Target targetId, bool skipCheck = false)
 {
     Net net;
     net.addLayerToPrev(params.name, params.type, params);
-    test(input, net, backendId, targetId);
+    test(input, net, backendId, targetId, skipCheck);
 }
 
 static testing::internal::ParamGenerator<tuple<Backend, Target> > dnnBackendsAndTargetsWithHalide()
@@ -101,16 +104,17 @@ TEST_P(Convolution, Accuracy)
     Size pad = get<4>(GetParam());
     Size dilation = get<5>(GetParam());
     bool hasBias = get<6>(GetParam());
-    int backendId = get<0>(get<7>(GetParam()));
-    int targetId = get<1>(get<7>(GetParam()));
+    Backend backendId = get<0>(get<7>(GetParam()));
+    Target targetId = get<1>(get<7>(GetParam()));
 
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE && targetId == DNN_TARGET_MYRIAD)
         throw SkipTestException("");
 
+    bool skipCheck = false;
     if (cvtest::skipUnstableTests && backendId == DNN_BACKEND_OPENCV &&
         (targetId == DNN_TARGET_OPENCL || targetId == DNN_TARGET_OPENCL_FP16) &&
         kernel == Size(3, 1) && stride == Size(1, 1) && pad == Size(0, 1))
-        throw SkipTestException("Skip unstable test");
+        skipCheck = true;
 
     int sz[] = {outChannels, inChannels / group, kernel.height, kernel.width};
     Mat weights(4, &sz[0], CV_32F);
@@ -139,7 +143,9 @@ TEST_P(Convolution, Accuracy)
     }
     int inpSz[] = {1, inChannels, inSize.height, inSize.width};
     Mat input(4, &inpSz[0], CV_32F);
-    test(lp, input, backendId, targetId);
+    test(lp, input, backendId, targetId, skipCheck);
+    if (skipCheck)
+        throw SkipTestException("Skip checks in unstable test");
 }
 
 INSTANTIATE_TEST_CASE_P(Layer_Test_Halide, Convolution, Combine(
@@ -171,8 +177,8 @@ TEST_P(Deconvolution, Accuracy)
     Size stride = Size(get<5>(GetParam())[0], get<5>(GetParam())[1]);
     Size adjPad = Size(get<5>(GetParam())[2], get<5>(GetParam())[3]);
     bool hasBias = get<6>(GetParam());
-    int backendId = get<0>(get<7>(GetParam()));
-    int targetId = get<1>(get<7>(GetParam()));
+    Backend backendId = get<0>(get<7>(GetParam()));
+    Target targetId = get<1>(get<7>(GetParam()));
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE && targetId == DNN_TARGET_CPU &&
         dilation.width == 2 && dilation.height == 2)
         throw SkipTestException("");
@@ -235,8 +241,8 @@ TEST_P(LRN, Accuracy)
     float bias = get<2>(GetParam())[2];
     bool normBySize = get<3>(GetParam());
     std::string nrmType = get<4>(GetParam());
-    int backendId = get<0>(get<5>(GetParam()));
-    int targetId = get<1>(get<5>(GetParam()));
+    Backend backendId = get<0>(get<5>(GetParam()));
+    Target targetId = get<1>(get<5>(GetParam()));
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE)
         throw SkipTestException("");
 
@@ -276,8 +282,8 @@ TEST_P(AvePooling, Accuracy)
     Size outSize = get<1>(GetParam());;  // Input size will be computed from parameters.
     Size kernel = get<2>(GetParam());
     Size stride = get<3>(GetParam());
-    int backendId = get<0>(get<4>(GetParam()));
-    int targetId = get<1>(get<4>(GetParam()));
+    Backend backendId = get<0>(get<4>(GetParam()));
+    Target targetId = get<1>(get<4>(GetParam()));
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE && targetId == DNN_TARGET_MYRIAD)
         throw SkipTestException("");
 
@@ -317,8 +323,8 @@ TEST_P(MaxPooling, Accuracy)
     Size kernel = get<2>(GetParam());
     Size stride = get<3>(GetParam());
     Size pad = get<4>(GetParam());
-    int backendId = get<0>(get<5>(GetParam()));
-    int targetId = get<1>(get<5>(GetParam()));
+    Backend backendId = get<0>(get<5>(GetParam()));
+    Target targetId = get<1>(get<5>(GetParam()));
 
     LayerParams lp;
     lp.set("pool", "max");
@@ -355,8 +361,8 @@ TEST_P(FullyConnected, Accuracy)
     Size inSize = get<1>(GetParam());
     int outChannels = get<2>(GetParam());
     bool hasBias = get<3>(GetParam());
-    int backendId = get<0>(get<4>(GetParam()));
-    int targetId = get<1>(get<4>(GetParam()));
+    Backend backendId = get<0>(get<4>(GetParam()));
+    Target targetId = get<1>(get<4>(GetParam()));
     if (backendId == DNN_BACKEND_INFERENCE_ENGINE)
         throw SkipTestException("");
 
@@ -394,8 +400,8 @@ typedef TestWithParam<tuple<int,  tuple<Backend, Target> > > SoftMax;
 TEST_P(SoftMax, Accuracy)
 {
     int inChannels = get<0>(GetParam());
-    int backendId = get<0>(get<1>(GetParam()));
-    int targetId = get<1>(get<1>(GetParam()));
+    Backend backendId = get<0>(get<1>(GetParam()));
+    Target targetId = get<1>(get<1>(GetParam()));
     LayerParams lp;
     lp.type = "SoftMax";
     lp.name = "testLayer";
@@ -457,7 +463,7 @@ TEST_P(Test_Halide_layers, MaxPoolUnpool)
 ////////////////////////////////////////////////////////////////////////////////
 static const int kNumChannels = 3;
 
-void testInPlaceActivation(LayerParams& lp, int backendId, int targetId)
+void testInPlaceActivation(LayerParams& lp, Backend backendId, Target targetId)
 {
     EXPECT_FALSE(lp.name.empty());
 
@@ -485,8 +491,8 @@ TEST_P(BatchNorm, Accuracy)
     bool hasWeights = get<0>(GetParam());
     bool hasBias = get<1>(GetParam());
     float epsilon = get<2>(GetParam());
-    int backendId = get<0>(get<3>(GetParam()));
-    int targetId = get<1>(get<3>(GetParam()));
+    Backend backendId = get<0>(get<3>(GetParam()));
+    Target targetId = get<1>(get<3>(GetParam()));
 
     LayerParams lp;
     lp.set("has_weight", hasWeights);
@@ -518,8 +524,8 @@ typedef TestWithParam<tuple<float, tuple<Backend, Target> > > ReLU;
 TEST_P(ReLU, Accuracy)
 {
     float negativeSlope = get<0>(GetParam());
-    int backendId = get<0>(get<1>(GetParam()));
-    int targetId = get<1>(get<1>(GetParam()));
+    Backend backendId = get<0>(get<1>(GetParam()));
+    Target targetId = get<1>(get<1>(GetParam()));
 
     LayerParams lp;
     lp.set("negative_slope", negativeSlope);
@@ -536,8 +542,8 @@ INSTANTIATE_TEST_CASE_P(Layer_Test_Halide, ReLU, Combine(
 typedef TestWithParam<tuple<std::string, tuple<Backend, Target> > > NoParamActivation;
 TEST_P(NoParamActivation, Accuracy)
 {
-    int backendId = get<0>(get<1>(GetParam()));
-    int targetId = get<1>(get<1>(GetParam()));
+    Backend backendId = get<0>(get<1>(GetParam()));
+    Target targetId = get<1>(get<1>(GetParam()));
 
     LayerParams lp;
     lp.type = get<0>(GetParam());
@@ -555,8 +561,8 @@ TEST_P(Power, Accuracy)
     float power = get<0>(GetParam())[0];
     float scale = get<0>(GetParam())[1];
     float shift = get<0>(GetParam())[2];
-    int backendId = get<0>(get<1>(GetParam()));
-    int targetId = get<1>(get<1>(GetParam()));
+    Backend backendId = get<0>(get<1>(GetParam()));
+    Target targetId = get<1>(get<1>(GetParam()));
 
     LayerParams lp;
     lp.set("power", power);
@@ -589,8 +595,8 @@ typedef TestWithParam<tuple<bool, tuple<Backend, Target> > > Scale;
 TEST_P(Scale, Accuracy)
 {
     bool hasBias = get<0>(GetParam());
-    int backendId = get<0>(get<1>(GetParam()));
-    int targetId = get<1>(get<1>(GetParam()));
+    Backend backendId = get<0>(get<1>(GetParam()));
+    Target targetId = get<1>(get<1>(GetParam()));
 
     LayerParams lp;
     lp.set("bias_term", hasBias);
@@ -624,8 +630,8 @@ TEST_P(Concat, Accuracy)
 {
     Vec3i inSize = get<0>(GetParam());
     Vec3i numChannels = get<1>(GetParam());
-    int backendId = get<0>(get<2>(GetParam()));
-    int targetId = get<1>(get<2>(GetParam()));
+    Backend backendId = get<0>(get<2>(GetParam()));
+    Target targetId = get<1>(get<2>(GetParam()));
 
     Net net;
 
@@ -692,8 +698,8 @@ TEST_P(Eltwise, Accuracy)
     std::string op = get<1>(GetParam());
     int numConv = get<2>(GetParam());
     bool weighted = get<3>(GetParam());
-    int backendId = get<0>(get<4>(GetParam()));
-    int targetId = get<1>(get<4>(GetParam()));
+    Backend backendId = get<0>(get<4>(GetParam()));
+    Target targetId = get<1>(get<4>(GetParam()));
 
     Net net;
 
diff --git a/modules/dnn/test/test_layers.cpp b/modules/dnn/test/test_layers.cpp
index 3ebb4172d9..77a326417c 100644
--- a/modules/dnn/test/test_layers.cpp
+++ b/modules/dnn/test/test_layers.cpp
@@ -1205,14 +1205,6 @@ public:
         }
     }
 
-    void forward(InputArrayOfArrays inputs, OutputArrayOfArrays outputs, OutputArrayOfArrays internals) CV_OVERRIDE
-    {
-        CV_TRACE_FUNCTION();
-        CV_TRACE_ARG_VALUE(name, "name", name.c_str());
-
-        Layer::forward_fallback(inputs, outputs, internals);
-    }
-
 private:
     int outWidth, outHeight, zoomFactor;
 };
@@ -1225,7 +1217,7 @@ TEST_P(Test_Caffe_layers, DISABLED_Interp)  // requires patched protobuf (availa
 {
     if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
         throw SkipTestException("");
-    // Test a cusom layer.
+    // Test a custom layer.
     CV_DNN_REGISTER_LAYER_CLASS(Interp, CustomInterpLayer);
     try
     {
diff --git a/modules/dnn/test/test_tf_importer.cpp b/modules/dnn/test/test_tf_importer.cpp
index 8b0a20747b..0bcbe562a3 100644
--- a/modules/dnn/test/test_tf_importer.cpp
+++ b/modules/dnn/test/test_tf_importer.cpp
@@ -230,6 +230,13 @@ TEST_P(Test_TensorFlow_layers, flatten)
     runTensorFlowNet("unfused_flatten_unknown_batch");
 }
 
+TEST_P(Test_TensorFlow_layers, leaky_relu)
+{
+    runTensorFlowNet("leaky_relu_order1");
+    runTensorFlowNet("leaky_relu_order2");
+    runTensorFlowNet("leaky_relu_order3");
+}
+
 TEST_P(Test_TensorFlow_layers, l2_normalize)
 {
     runTensorFlowNet("l2_normalize");
diff --git a/modules/dnn/test/test_torch_importer.cpp b/modules/dnn/test/test_torch_importer.cpp
index 37966a1f93..c07c5b39d8 100644
--- a/modules/dnn/test/test_torch_importer.cpp
+++ b/modules/dnn/test/test_torch_importer.cpp
@@ -69,100 +69,119 @@ TEST(Torch_Importer, simple_read)
     ASSERT_FALSE(net.empty());
 }
 
-static void runTorchNet(String prefix, int targetId = DNN_TARGET_CPU, String outLayerName = "",
-                        bool check2ndBlob = false, bool isBinary = false)
+class Test_Torch_layers : public DNNTestLayer
 {
-    String suffix = (isBinary) ? ".dat" : ".txt";
+public:
+    void runTorchNet(const String& prefix, String outLayerName = "",
+                     bool check2ndBlob = false, bool isBinary = false,
+                     double l1 = 0.0, double lInf = 0.0)
+    {
+        String suffix = (isBinary) ? ".dat" : ".txt";
 
-    Net net = readNetFromTorch(_tf(prefix + "_net" + suffix), isBinary);
-    ASSERT_FALSE(net.empty());
+        Mat inp, outRef;
+        ASSERT_NO_THROW( inp = readTorchBlob(_tf(prefix + "_input" + suffix), isBinary) );
+        ASSERT_NO_THROW( outRef = readTorchBlob(_tf(prefix + "_output" + suffix), isBinary) );
 
-    net.setPreferableBackend(DNN_BACKEND_OPENCV);
-    net.setPreferableTarget(targetId);
+        checkBackend(backend, target, &inp, &outRef);
 
-    Mat inp, outRef;
-    ASSERT_NO_THROW( inp = readTorchBlob(_tf(prefix + "_input" + suffix), isBinary) );
-    ASSERT_NO_THROW( outRef = readTorchBlob(_tf(prefix + "_output" + suffix), isBinary) );
+        Net net = readNetFromTorch(_tf(prefix + "_net" + suffix), isBinary);
+        ASSERT_FALSE(net.empty());
 
-    if (outLayerName.empty())
-        outLayerName = net.getLayerNames().back();
+        net.setPreferableBackend(backend);
+        net.setPreferableTarget(target);
 
-    net.setInput(inp);
-    std::vector<Mat> outBlobs;
-    net.forward(outBlobs, outLayerName);
-    normAssert(outRef, outBlobs[0]);
+        if (outLayerName.empty())
+            outLayerName = net.getLayerNames().back();
 
-    if (check2ndBlob)
-    {
-        Mat out2 = outBlobs[1];
-        Mat ref2 = readTorchBlob(_tf(prefix + "_output_2" + suffix), isBinary);
-        normAssert(out2, ref2);
-    }
-}
+        net.setInput(inp);
+        std::vector<Mat> outBlobs;
+        net.forward(outBlobs, outLayerName);
+        l1 = l1 ? l1 : default_l1;
+        lInf = lInf ? lInf : default_lInf;
+        normAssert(outRef, outBlobs[0], "", l1, lInf);
 
-typedef testing::TestWithParam<Target> Test_Torch_layers;
+        if (check2ndBlob && backend != DNN_BACKEND_INFERENCE_ENGINE)
+        {
+            Mat out2 = outBlobs[1];
+            Mat ref2 = readTorchBlob(_tf(prefix + "_output_2" + suffix), isBinary);
+            normAssert(out2, ref2, "", l1, lInf);
+        }
+    }
+};
 
 TEST_P(Test_Torch_layers, run_convolution)
 {
-    runTorchNet("net_conv", GetParam(), "", false, true);
+    if ((backend == DNN_BACKEND_INFERENCE_ENGINE && target != DNN_TARGET_CPU) ||
+        (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+    runTorchNet("net_conv", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, run_pool_max)
 {
-    runTorchNet("net_pool_max", GetParam(), "", true);
+    if (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16)
+        throw SkipTestException("");
+    runTorchNet("net_pool_max", "", true);
 }
 
 TEST_P(Test_Torch_layers, run_pool_ave)
 {
-    runTorchNet("net_pool_ave", GetParam());
+    runTorchNet("net_pool_ave");
 }
 
 TEST_P(Test_Torch_layers, run_reshape)
 {
-    int targetId = GetParam();
-    runTorchNet("net_reshape", targetId);
-    runTorchNet("net_reshape_batch", targetId);
-    runTorchNet("net_reshape_single_sample", targetId);
-    runTorchNet("net_reshape_channels", targetId, "", false, true);
+    runTorchNet("net_reshape");
+    runTorchNet("net_reshape_batch");
+    runTorchNet("net_reshape_channels", "", false, true);
+}
+
+TEST_P(Test_Torch_layers, run_reshape_single_sample)
+{
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_OPENCL_FP16)
+        throw SkipTestException("");
+    runTorchNet("net_reshape_single_sample", "", false, false,
+                (target == DNN_TARGET_MYRIAD || target == DNN_TARGET_OPENCL_FP16) ? 0.0052 : 0.0);
 }
 
 TEST_P(Test_Torch_layers, run_linear)
 {
-    runTorchNet("net_linear_2d", GetParam());
+    if (backend == DNN_BACKEND_OPENCV && target == DNN_TARGET_OPENCL_FP16)
+        throw SkipTestException("");
+    runTorchNet("net_linear_2d");
 }
 
 TEST_P(Test_Torch_layers, run_concat)
 {
-    int targetId = GetParam();
-    runTorchNet("net_concat", targetId, "l5_torchMerge");
-    runTorchNet("net_depth_concat", targetId, "", false, true);
+    runTorchNet("net_concat", "l5_torchMerge");
+    runTorchNet("net_depth_concat", "", false, true, 0.0,
+                target == DNN_TARGET_OPENCL_FP16 ? 0.021 : 0.0);
 }
 
 TEST_P(Test_Torch_layers, run_deconv)
 {
-    runTorchNet("net_deconv", GetParam());
+    runTorchNet("net_deconv");
 }
 
 TEST_P(Test_Torch_layers, run_batch_norm)
 {
-    runTorchNet("net_batch_norm", GetParam(), "", false, true);
+    runTorchNet("net_batch_norm", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, net_prelu)
 {
-    runTorchNet("net_prelu", GetParam());
+    runTorchNet("net_prelu");
 }
 
 TEST_P(Test_Torch_layers, net_cadd_table)
 {
-    runTorchNet("net_cadd_table", GetParam());
+    runTorchNet("net_cadd_table");
 }
 
 TEST_P(Test_Torch_layers, net_softmax)
 {
-    int targetId = GetParam();
-    runTorchNet("net_softmax", targetId);
-    runTorchNet("net_softmax_spatial", targetId);
+    runTorchNet("net_softmax");
+    runTorchNet("net_softmax_spatial");
 }
 
 TEST_P(Test_Torch_layers, net_logsoftmax)
@@ -173,40 +192,55 @@ TEST_P(Test_Torch_layers, net_logsoftmax)
 
 TEST_P(Test_Torch_layers, net_lp_pooling)
 {
-    int targetId = GetParam();
-    runTorchNet("net_lp_pooling_square", targetId, "", false, true);
-    runTorchNet("net_lp_pooling_power", targetId, "", false, true);
+    runTorchNet("net_lp_pooling_square", "", false, true);
+    runTorchNet("net_lp_pooling_power", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, net_conv_gemm_lrn)
 {
-    runTorchNet("net_conv_gemm_lrn", GetParam(), "", false, true);
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE && target == DNN_TARGET_MYRIAD)
+        throw SkipTestException("");
+    runTorchNet("net_conv_gemm_lrn", "", false, true,
+                target == DNN_TARGET_OPENCL_FP16 ? 0.046 : 0.0,
+                target == DNN_TARGET_OPENCL_FP16 ? 0.023 : 0.0);
 }
 
 TEST_P(Test_Torch_layers, net_inception_block)
 {
-    runTorchNet("net_inception_block", GetParam(), "", false, true);
+    runTorchNet("net_inception_block", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, net_normalize)
 {
-    runTorchNet("net_normalize", GetParam(), "", false, true);
+    runTorchNet("net_normalize", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, net_padding)
 {
-    int targetId = GetParam();
-    runTorchNet("net_padding", targetId, "", false, true);
-    runTorchNet("net_spatial_zero_padding", targetId, "", false, true);
-    runTorchNet("net_spatial_reflection_padding", targetId, "", false, true);
+    runTorchNet("net_padding", "", false, true);
+    runTorchNet("net_spatial_zero_padding", "", false, true);
+    runTorchNet("net_spatial_reflection_padding", "", false, true);
 }
 
 TEST_P(Test_Torch_layers, net_non_spatial)
 {
-    runTorchNet("net_non_spatial", GetParam(), "", false, true);
+    if (backend == DNN_BACKEND_INFERENCE_ENGINE &&
+        (target == DNN_TARGET_OPENCL || target == DNN_TARGET_OPENCL_FP16))
+        throw SkipTestException("");
+    runTorchNet("net_non_spatial", "", false, true);
+}
+
+TEST_P(Test_Torch_layers, run_paralel)
+{
+    if (backend != DNN_BACKEND_OPENCV || target != DNN_TARGET_CPU)
+        throw SkipTestException("");
+    runTorchNet("net_parallel", "l5_torchMerge");
 }
 
-INSTANTIATE_TEST_CASE_P(/**/, Test_Torch_layers, availableDnnTargets());
+TEST_P(Test_Torch_layers, net_residual)
+{
+    runTorchNet("net_residual", "", false, true);
+}
 
 typedef testing::TestWithParam<Target> Test_Torch_nets;
 
@@ -313,21 +347,6 @@ TEST_P(Test_Torch_nets, FastNeuralStyle_accuracy)
 
 INSTANTIATE_TEST_CASE_P(/**/, Test_Torch_nets, availableDnnTargets());
 
-// TODO: fix OpenCL and add to the rest of tests
-TEST(Torch_Importer, run_paralel)
-{
-    runTorchNet("net_parallel", DNN_TARGET_CPU, "l5_torchMerge");
-}
-
-TEST(Torch_Importer, DISABLED_run_paralel)
-{
-    runTorchNet("net_parallel", DNN_TARGET_OPENCL, "l5_torchMerge");
-}
-
-TEST(Torch_Importer, net_residual)
-{
-    runTorchNet("net_residual", DNN_TARGET_CPU, "", false, true);
-}
 
 // Test a custom layer
 // https://github.com/torch/nn/blob/master/doc/convolution.md#nn.SpatialUpSamplingNearest
@@ -374,17 +393,29 @@ public:
         }
     }
 
-    virtual void forward(InputArrayOfArrays, OutputArrayOfArrays, OutputArrayOfArrays) CV_OVERRIDE {}
-
 private:
     int scale;
 };
 
-TEST(Torch_Importer, upsampling_nearest)
+TEST_P(Test_Torch_layers, upsampling_nearest)
 {
+    // Test a custom layer.
     CV_DNN_REGISTER_LAYER_CLASS(SpatialUpSamplingNearest, SpatialUpSamplingNearestLayer);
-    runTorchNet("net_spatial_upsampling_nearest", DNN_TARGET_CPU, "", false, true);
+    try
+    {
+        runTorchNet("net_spatial_upsampling_nearest", "", false, true);
+    }
+    catch (...)
+    {
+        LayerFactory::unregisterLayer("SpatialUpSamplingNearest");
+        throw;
+    }
     LayerFactory::unregisterLayer("SpatialUpSamplingNearest");
+
+    // Test an implemented layer.
+    runTorchNet("net_spatial_upsampling_nearest", "", false, true);
 }
 
+INSTANTIATE_TEST_CASE_P(/**/, Test_Torch_layers, dnnBackendsAndTargets());
+
 }
diff --git a/modules/highgui/src/window_w32.cpp b/modules/highgui/src/window_w32.cpp
index ea7b461f90..945b2e6e78 100644
--- a/modules/highgui/src/window_w32.cpp
+++ b/modules/highgui/src/window_w32.cpp
@@ -307,8 +307,8 @@ icvLoadWindowPos( const char* name, CvRect& rect )
 {
     HKEY hkey;
     char szKey[1024];
-    strcpy( szKey, icvWindowPosRootKey );
-    strcat( szKey, name );
+    strcpy_s( szKey, 1024, icvWindowPosRootKey );
+    strcat_s( szKey, 1024, name );
 
     rect.x = rect.y = CW_USEDEFAULT;
     rect.width = rect.height = 320;
@@ -368,8 +368,8 @@ icvSaveWindowPos( const char* name, CvRect rect )
     HKEY hkey;
     char szKey[1024];
     char rootKey[1024];
-    strcpy( szKey, icvWindowPosRootKey );
-    strcat( szKey, name );
+    strcpy_s( szKey, 1024, icvWindowPosRootKey );
+    strcat_s( szKey, 1024, name );
 
     if( RegOpenKeyEx( HKEY_CURRENT_USER,szKey,0,KEY_READ,&hkey) != ERROR_SUCCESS )
     {
@@ -379,7 +379,7 @@ icvSaveWindowPos( const char* name, CvRect rect )
         char oldestKey[1024];
         char currentKey[1024];
 
-        strcpy( rootKey, icvWindowPosRootKey );
+        strcpy_s( rootKey, 1024, icvWindowPosRootKey );
         rootKey[strlen(rootKey)-1] = '\0';
         if( RegCreateKeyEx(HKEY_CURRENT_USER, rootKey, 0, NULL, REG_OPTION_NON_VOLATILE, KEY_READ+KEY_WRITE, 0, &hroot, NULL) != ERROR_SUCCESS )
             //RegOpenKeyEx( HKEY_CURRENT_USER,rootKey,0,KEY_READ,&hroot) != ERROR_SUCCESS )
@@ -398,7 +398,7 @@ icvSaveWindowPos( const char* name, CvRect rect )
                 oldestTime.dwLowDateTime > accesstime.dwLowDateTime) )
             {
                 oldestTime = accesstime;
-                strcpy( oldestKey, currentKey );
+                strcpy_s( oldestKey, 1024, currentKey );
             }
         }
 
@@ -1500,6 +1500,8 @@ MainWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
             rgn = CreateRectRgn(0, 0, wrc.right, wrc.bottom);
             rgn1 = CreateRectRgn(cr.left, cr.top, cr.right, cr.bottom);
             rgn2 = CreateRectRgn(tr.left, tr.top, tr.right, tr.bottom);
+            CV_Assert(rgn != 0, rgn1 != 0, rgn2 != 0);
+
             ret = CombineRgn(rgn, rgn, rgn1, RGN_DIFF);
             ret = CombineRgn(rgn, rgn, rgn2, RGN_DIFF);
 
diff --git a/modules/imgproc/include/opencv2/imgproc.hpp b/modules/imgproc/include/opencv2/imgproc.hpp
index e32a41a73f..23cad31e4e 100644
--- a/modules/imgproc/include/opencv2/imgproc.hpp
+++ b/modules/imgproc/include/opencv2/imgproc.hpp
@@ -1771,7 +1771,7 @@ Corners in the image can be found as the local maxima of this response map.
 size as src .
 @param blockSize Neighborhood size (see the details on #cornerEigenValsAndVecs ).
 @param ksize Aperture parameter for the Sobel operator.
-@param k Harris detector free parameter. See the formula below.
+@param k Harris detector free parameter. See the formula above.
 @param borderType Pixel extrapolation method. See #BorderTypes.
  */
 CV_EXPORTS_W void cornerHarris( InputArray src, OutputArray dst, int blockSize,
diff --git a/modules/python/bindings/CMakeLists.txt b/modules/python/bindings/CMakeLists.txt
index f7c86e0250..9d0346d5fc 100644
--- a/modules/python/bindings/CMakeLists.txt
+++ b/modules/python/bindings/CMakeLists.txt
@@ -20,8 +20,12 @@ endforeach()
 set(opencv_hdrs "")
 set(opencv_userdef_hdrs "")
 foreach(m ${OPENCV_PYTHON_MODULES})
-  ocv_list_filter(OPENCV_MODULE_${m}_HEADERS "${OPENCV_MODULE_${m}_LOCATION}/include" __hdrs)
-  list(APPEND opencv_hdrs ${__hdrs})
+  foreach (hdr ${OPENCV_MODULE_${m}_HEADERS})
+    ocv_is_subdir(is_sub "${OPENCV_MODULE_${m}_LOCATION}/include" "${hdr}")
+    if(is_sub)
+      list(APPEND opencv_hdrs "${hdr}")
+    endif()
+  endforeach()
   file(GLOB userdef_hdrs ${OPENCV_MODULE_${m}_LOCATION}/misc/python/pyopencv*.hpp)
   list(APPEND opencv_userdef_hdrs ${userdef_hdrs})
 endforeach(m)
diff --git a/modules/ts/include/opencv2/ts.hpp b/modules/ts/include/opencv2/ts.hpp
index 3fbea894e8..4880b6cf2c 100644
--- a/modules/ts/include/opencv2/ts.hpp
+++ b/modules/ts/include/opencv2/ts.hpp
@@ -379,10 +379,9 @@ struct TSParams
 
 class TS
 {
-public:
-    // constructor(s) and destructor
     TS();
     virtual ~TS();
+public:
 
     enum
     {
@@ -484,9 +483,6 @@ public:
         SKIPPED=1
     };
 
-    // get file storage
-    CvFileStorage* get_file_storage();
-
     // get RNG to generate random input data for a test
     RNG& get_rng() { return rng; }
 
@@ -629,9 +625,6 @@ struct DefaultRngAuto
 void fillGradient(Mat& img, int delta = 5);
 void smoothBorder(Mat& img, const Scalar& color, int delta = 3);
 
-void printVersionInfo(bool useStdOut = true);
-
-
 // Utility functions
 
 void addDataSearchPath(const std::string& path);
@@ -660,6 +653,13 @@ std::string findDataFile(const std::string& relative_path, bool required = true)
  */
 std::string findDataDirectory(const std::string& relative_path, bool required = true);
 
+// Test definitions
+
+class SystemInfoCollector : public testing::EmptyTestEventListener
+{
+private:
+    virtual void OnTestProgramStart(const testing::UnitTest&);
+};
 
 #ifndef __CV_TEST_EXEC_ARGS
 #if defined(_MSC_VER) && (_MSC_VER <= 1400)
@@ -671,15 +671,6 @@ std::string findDataDirectory(const std::string& relative_path, bool required =
 #endif
 #endif
 
-#ifdef HAVE_OPENCL
-namespace ocl {
-void dumpOpenCLDevice();
-}
-#define TEST_DUMP_OCL_INFO cvtest::ocl::dumpOpenCLDevice();
-#else
-#define TEST_DUMP_OCL_INFO
-#endif
-
 void parseCustomOptions(int argc, char **argv);
 
 #define CV_TEST_INIT0_NOOP (void)0
@@ -696,8 +687,7 @@ int main(int argc, char **argv) \
     ts->init(resourcesubdir); \
     __CV_TEST_EXEC_ARGS(CV_TEST_INIT0_ ## INIT0) \
     ::testing::InitGoogleTest(&argc, argv); \
-    cvtest::printVersionInfo(); \
-    TEST_DUMP_OCL_INFO \
+    ::testing::UnitTest::GetInstance()->listeners().Append(new SystemInfoCollector); \
     __CV_TEST_EXEC_ARGS(__VA_ARGS__) \
     parseCustomOptions(argc, argv); \
     } \
diff --git a/modules/ts/include/opencv2/ts/ts_perf.hpp b/modules/ts/include/opencv2/ts/ts_perf.hpp
index eba6f27cdf..83988c2b86 100644
--- a/modules/ts/include/opencv2/ts/ts_perf.hpp
+++ b/modules/ts/include/opencv2/ts/ts_perf.hpp
@@ -637,15 +637,6 @@ void PrintTo(const Size& sz, ::std::ostream* os);
 #endif
 #endif
 
-#ifdef HAVE_OPENCL
-namespace cvtest { namespace ocl {
-void dumpOpenCLDevice();
-}}
-#define TEST_DUMP_OCL_INFO cvtest::ocl::dumpOpenCLDevice();
-#else
-#define TEST_DUMP_OCL_INFO
-#endif
-
 
 #define CV_PERF_TEST_MAIN_INTERNALS(modulename, impls, ...)	\
     CV_TRACE_FUNCTION(); \
@@ -654,11 +645,10 @@ void dumpOpenCLDevice();
     ::perf::TestBase::Init(std::vector<std::string>(impls, impls + sizeof impls / sizeof *impls), \
                            argc, argv); \
     ::testing::InitGoogleTest(&argc, argv); \
-    cvtest::printVersionInfo(); \
+    ::testing::UnitTest::GetInstance()->listeners().Append(new cvtest::SystemInfoCollector); \
     ::testing::Test::RecordProperty("cv_module_name", #modulename); \
     ::perf::TestBase::RecordRunParameters(); \
     __CV_TEST_EXEC_ARGS(__VA_ARGS__) \
-    TEST_DUMP_OCL_INFO \
     } \
     return RUN_ALL_TESTS();
 
diff --git a/modules/ts/src/ocl_test.cpp b/modules/ts/src/ocl_test.cpp
index 8eaa7e637d..6d5ff26d7f 100644
--- a/modules/ts/src/ocl_test.cpp
+++ b/modules/ts/src/ocl_test.cpp
@@ -43,25 +43,6 @@
 
 #include "opencv2/ts/ocl_test.hpp"
 
-#ifdef HAVE_OPENCL
-
-#define DUMP_CONFIG_PROPERTY(propertyName, propertyValue) \
-    do { \
-        std::stringstream ssName, ssValue;\
-        ssName << propertyName;\
-        ssValue << (propertyValue); \
-        ::testing::Test::RecordProperty(ssName.str(), ssValue.str()); \
-    } while (false)
-
-#define DUMP_MESSAGE_STDOUT(msg) \
-    do { \
-        std::cout << msg << std::endl; \
-    } while (false)
-
-#include <opencv2/core/opencl/opencl_info.hpp>
-
-#endif // HAVE_OPENCL
-
 namespace cvtest {
 namespace ocl {
 
@@ -69,13 +50,6 @@ using namespace cv;
 
 int test_loop_times = 1; // TODO Read from command line / environment
 
-#ifdef HAVE_OPENCL
-void dumpOpenCLDevice()
-{
-    cv::dumpOpenCLInformation();
-}
-#endif // HAVE_OPENCL
-
 Mat TestUtils::readImage(const String &fileName, int flags)
 {
     return cv::imread(cvtest::TS::ptr()->get_data_path() + fileName, flags);
diff --git a/modules/ts/src/ts.cpp b/modules/ts/src/ts.cpp
index b1ea96bb15..fabfa1b260 100644
--- a/modules/ts/src/ts.cpp
+++ b/modules/ts/src/ts.cpp
@@ -74,7 +74,26 @@
 # include <sys/stat.h>
 #endif
 
+#ifdef HAVE_OPENCL
 
+#define DUMP_CONFIG_PROPERTY(propertyName, propertyValue) \
+    do { \
+        std::stringstream ssName, ssValue;\
+        ssName << propertyName;\
+        ssValue << (propertyValue); \
+        ::testing::Test::RecordProperty(ssName.str(), ssValue.str()); \
+    } while (false)
+
+#define DUMP_MESSAGE_STDOUT(msg) \
+    do { \
+        std::cout << msg << std::endl; \
+    } while (false)
+
+#include "opencv2/core/opencl/opencl_info.hpp"
+
+#endif // HAVE_OPENCL
+
+#include "opencv2/core/utility.hpp"
 #include "opencv_tests_config.hpp"
 
 namespace opencv_test {
@@ -230,7 +249,6 @@ bool BaseTest::can_do_fast_forward()
 void BaseTest::safe_run( int start_from )
 {
     CV_TRACE_FUNCTION();
-    read_params( ts->get_file_storage() );
     ts->update_context( 0, -1, true );
     ts->update_context( this, -1, true );
 
@@ -552,8 +570,6 @@ void TS::set_gtest_status()
 }
 
 
-CvFileStorage* TS::get_file_storage() { return 0; }
-
 void TS::update_context( BaseTest* test, int test_case_idx, bool update_ts_context )
 {
     if( current_test_info.test != test )
@@ -614,8 +630,11 @@ void TS::printf( int streams, const char* fmt, ... )
 }
 
 
-static TS ts;
-TS* TS::ptr() { return &ts; }
+TS* TS::ptr()
+{
+    static TS ts;
+    return &ts;
+}
 
 void fillGradient(Mat& img, int delta)
 {
@@ -866,6 +885,65 @@ std::string findDataDirectory(const std::string& relative_path, bool required)
     return findData(relative_path, required, true);
 }
 
+inline static std::string getSnippetFromConfig(const std::string & start, const std::string & end)
+{
+    const std::string buildInfo = cv::getBuildInformation();
+    size_t pos1 = buildInfo.find(start);
+    if (pos1 != std::string::npos)
+    {
+        pos1 += start.length();
+        pos1 = buildInfo.find_first_not_of(" \t\n\r", pos1);
+    }
+    size_t pos2 = buildInfo.find(end, pos1);
+    if (pos2 != std::string::npos)
+    {
+        pos2 = buildInfo.find_last_not_of(" \t\n\r", pos2);
+    }
+    if (pos1 != std::string::npos && pos2 != std::string::npos && pos1 < pos2)
+    {
+        return buildInfo.substr(pos1, pos2 - pos1 + 1);
+    }
+    return std::string();
+}
+
+inline static void recordPropertyVerbose(const std::string & property,
+                                         const std::string & msg,
+                                         const std::string & value,
+                                         const std::string & build_value = std::string())
+{
+    ::testing::Test::RecordProperty(property, value);
+    std::cout << msg << ": " << (value.empty() ? std::string("N/A") : value) << std::endl;
+    if (!build_value.empty())
+    {
+        ::testing::Test::RecordProperty(property + "_build", build_value);
+        if (build_value != value)
+            std::cout << "WARNING: build value differs from runtime: " << build_value << endl;
+    }
+}
+
+#ifdef _DEBUG
+#define CV_TEST_BUILD_CONFIG "Debug"
+#else
+#define CV_TEST_BUILD_CONFIG "Release"
+#endif
+
+void SystemInfoCollector::OnTestProgramStart(const testing::UnitTest&)
+{
+    std::cout << "CTEST_FULL_OUTPUT" << std::endl; // Tell CTest not to discard any output
+    recordPropertyVerbose("cv_version", "OpenCV version", cv::getVersionString(), CV_VERSION);
+    recordPropertyVerbose("cv_vcs_version", "OpenCV VCS version", getSnippetFromConfig("Version control:", "\n"));
+    recordPropertyVerbose("cv_build_type", "Build type", getSnippetFromConfig("Configuration:", "\n"), CV_TEST_BUILD_CONFIG);
+    recordPropertyVerbose("cv_compiler", "Compiler", getSnippetFromConfig("C++ Compiler:", "\n"));
+    recordPropertyVerbose("cv_parallel_framework", "Parallel framework", cv::currentParallelFramework());
+    recordPropertyVerbose("cv_cpu_features", "CPU features", cv::getCPUFeaturesLine());
+#ifdef HAVE_IPP
+    recordPropertyVerbose("cv_ipp_version", "Intel(R) IPP version", cv::ipp::useIPP() ? cv::ipp::getIppVersion() :  "disabled");
+#endif
+#ifdef HAVE_OPENCL
+    cv::dumpOpenCLInformation();
+#endif
+}
+
 } //namespace cvtest
 
 /* End of file. */
diff --git a/modules/ts/src/ts_func.cpp b/modules/ts/src/ts_func.cpp
index f6dbc6472b..60c88a7e65 100644
--- a/modules/ts/src/ts_func.cpp
+++ b/modules/ts/src/ts_func.cpp
@@ -2973,143 +2973,6 @@ MatComparator::operator()(const char* expr1, const char* expr2,
     << "- " << expr2 << ":\n" << MatPart(m2part, border > 0 ? &loc : 0) << ".\n";
 }
 
-void printVersionInfo(bool useStdOut)
-{
-    // Tell CTest not to discard any output
-    if(useStdOut) std::cout << "CTEST_FULL_OUTPUT" << std::endl;
-
-    ::testing::Test::RecordProperty("cv_version", CV_VERSION);
-    if(useStdOut) std::cout << "OpenCV version: " << CV_VERSION << std::endl;
-
-    std::string buildInfo( cv::getBuildInformation() );
-
-    size_t pos1 = buildInfo.find("Version control");
-    size_t pos2 = buildInfo.find('\n', pos1);
-    if(pos1 != std::string::npos && pos2 != std::string::npos)
-    {
-        size_t value_start = buildInfo.rfind(' ', pos2) + 1;
-        std::string ver( buildInfo.substr(value_start, pos2 - value_start) );
-        ::testing::Test::RecordProperty("cv_vcs_version", ver);
-        if (useStdOut) std::cout << "OpenCV VCS version: " << ver << std::endl;
-    }
-
-    pos1 = buildInfo.find("inner version");
-    pos2 = buildInfo.find('\n', pos1);
-    if(pos1 != std::string::npos && pos2 != std::string::npos)
-    {
-        size_t value_start = buildInfo.rfind(' ', pos2) + 1;
-        std::string ver( buildInfo.substr(value_start, pos2 - value_start) );
-        ::testing::Test::RecordProperty("cv_inner_vcs_version", ver);
-        if(useStdOut) std::cout << "Inner VCS version: " << ver << std::endl;
-    }
-
-    const char * build_type =
-#ifdef _DEBUG
-        "debug";
-#else
-        "release";
-#endif
-
-    ::testing::Test::RecordProperty("cv_build_type", build_type);
-    if (useStdOut) std::cout << "Build type: " << build_type << std::endl;
-
-    const char* parallel_framework = currentParallelFramework();
-
-    if (parallel_framework) {
-        ::testing::Test::RecordProperty("cv_parallel_framework", parallel_framework);
-        if (useStdOut) std::cout << "Parallel framework: " << parallel_framework << std::endl;
-    }
-
-    std::string cpu_features;
-
-#if CV_POPCNT
-    if (checkHardwareSupport(CV_CPU_POPCNT)) cpu_features += " popcnt";
-#endif
-#if CV_MMX
-    if (checkHardwareSupport(CV_CPU_MMX)) cpu_features += " mmx";
-#endif
-#if CV_SSE
-    if (checkHardwareSupport(CV_CPU_SSE)) cpu_features += " sse";
-#endif
-#if CV_SSE2
-    if (checkHardwareSupport(CV_CPU_SSE2)) cpu_features += " sse2";
-#endif
-#if CV_SSE3
-    if (checkHardwareSupport(CV_CPU_SSE3)) cpu_features += " sse3";
-#endif
-#if CV_SSSE3
-    if (checkHardwareSupport(CV_CPU_SSSE3)) cpu_features += " ssse3";
-#endif
-#if CV_SSE4_1
-    if (checkHardwareSupport(CV_CPU_SSE4_1)) cpu_features += " sse4.1";
-#endif
-#if CV_SSE4_2
-    if (checkHardwareSupport(CV_CPU_SSE4_2)) cpu_features += " sse4.2";
-#endif
-#if CV_AVX
-    if (checkHardwareSupport(CV_CPU_AVX)) cpu_features += " avx";
-#endif
-#if CV_AVX2
-    if (checkHardwareSupport(CV_CPU_AVX2)) cpu_features += " avx2";
-#endif
-#if CV_FMA3
-    if (checkHardwareSupport(CV_CPU_FMA3)) cpu_features += " fma3";
-#endif
-#if CV_AVX_512F
-    if (checkHardwareSupport(CV_CPU_AVX_512F)) cpu_features += " avx-512f";
-#endif
-#if CV_AVX_512BW
-    if (checkHardwareSupport(CV_CPU_AVX_512BW)) cpu_features += " avx-512bw";
-#endif
-#if CV_AVX_512CD
-    if (checkHardwareSupport(CV_CPU_AVX_512CD)) cpu_features += " avx-512cd";
-#endif
-#if CV_AVX_512DQ
-    if (checkHardwareSupport(CV_CPU_AVX_512DQ)) cpu_features += " avx-512dq";
-#endif
-#if CV_AVX_512ER
-    if (checkHardwareSupport(CV_CPU_AVX_512ER)) cpu_features += " avx-512er";
-#endif
-#if CV_AVX_512IFMA512
-    if (checkHardwareSupport(CV_CPU_AVX_512IFMA512)) cpu_features += " avx-512ifma512";
-#endif
-#if CV_AVX_512PF
-    if (checkHardwareSupport(CV_CPU_AVX_512PF)) cpu_features += " avx-512pf";
-#endif
-#if CV_AVX_512VBMI
-    if (checkHardwareSupport(CV_CPU_AVX_512VBMI)) cpu_features += " avx-512vbmi";
-#endif
-#if CV_AVX_512VL
-    if (checkHardwareSupport(CV_CPU_AVX_512VL)) cpu_features += " avx-512vl";
-#endif
-#if CV_NEON
-    if (checkHardwareSupport(CV_CPU_NEON)) cpu_features += " neon";
-#endif
-#if CV_FP16
-    if (checkHardwareSupport(CV_CPU_FP16)) cpu_features += " fp16";
-#endif
-#if CV_VSX
-    if (checkHardwareSupport(CV_CPU_VSX)) cpu_features += " VSX";
-#endif
-
-    cpu_features.erase(0, 1); // erase initial space
-
-    ::testing::Test::RecordProperty("cv_cpu_features", cpu_features);
-    if (useStdOut) std::cout << "CPU features: " << cpu_features << std::endl;
-
-#ifdef HAVE_IPP
-    const char * ipp_optimization = cv::ipp::useIPP()? "enabled" : "disabled";
-    ::testing::Test::RecordProperty("cv_ipp_optimization", ipp_optimization);
-    if (useStdOut) std::cout << "Intel(R) IPP optimization: " << ipp_optimization << std::endl;
-
-    cv::String ippVer = cv::ipp::getIppVersion();
-    ::testing::Test::RecordProperty("cv_ipp_version", ippVer);
-    if(useStdOut) std::cout << "Intel(R) IPP version: " << ippVer.c_str() << std::endl;
-#endif
-}
-
-
-
 void threshold( const Mat& _src, Mat& _dst,
                             double thresh, double maxval, int thresh_type )
 {
diff --git a/modules/videoio/include/opencv2/videoio.hpp b/modules/videoio/include/opencv2/videoio.hpp
index eef840b6ec..2628609040 100644
--- a/modules/videoio/include/opencv2/videoio.hpp
+++ b/modules/videoio/include/opencv2/videoio.hpp
@@ -905,7 +905,7 @@ public:
 
     /** @brief Writes the next video frame
 
-    @param image The written frame
+    @param image The written frame. In general, color images are expected in BGR format.
 
     The function/method writes the specified image to video file. It must have the same size as has
     been specified when opening the video writer.
diff --git a/modules/videoio/src/cap_dshow.cpp b/modules/videoio/src/cap_dshow.cpp
index 3a92a81d49..03cb5a4f37 100644
--- a/modules/videoio/src/cap_dshow.cpp
+++ b/modules/videoio/src/cap_dshow.cpp
@@ -811,6 +811,8 @@ void videoDevice::NukeDownstream(IBaseFilter *pBF){
     IEnumPins *pins = NULL;
     PIN_INFO pininfo;
     HRESULT hr = pBF->EnumPins(&pins);
+    if (hr != S_OK || !pins)
+        return;
     pins->Reset();
     while (hr == NOERROR)
     {
@@ -838,7 +840,7 @@ void videoDevice::NukeDownstream(IBaseFilter *pBF){
             pP->Release();
         }
     }
-    if (pins) pins->Release();
+    pins->Release();
 }
 
 
@@ -999,17 +1001,6 @@ videoDevice::~videoDevice(){
                                 (pGraph) = 0;
     }
 
-    //delete our pointers
-    delete pDestFilter;
-    delete pVideoInputFilter;
-    delete pGrabberF;
-    delete pGrabber;
-    delete pControl;
-    delete streamConf;
-    delete pMediaEvent;
-    delete pCaptureGraph;
-    delete pGraph;
-
     DebugPrintOut("SETUP: Device %i disconnected and freed\n\n",myID);
 }
 
@@ -1654,7 +1645,7 @@ bool videoInput::getVideoSettingFilter(int deviceID, long Property, long &min, l
     IAMVideoProcAmp *pAMVideoProcAmp = NULL;
 
     hr = VD->pVideoInputFilter->QueryInterface(IID_IAMVideoProcAmp, (void**)&pAMVideoProcAmp);
-    if(FAILED(hr)){
+    if(FAILED(hr) || !pAMVideoProcAmp){
         DebugPrintOut("setVideoSetting - QueryInterface Error\n");
 #if 0
         if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
@@ -1676,7 +1667,7 @@ bool videoInput::getVideoSettingFilter(int deviceID, long Property, long &min, l
         hr = pAMVideoProcAmp->Get(Property, &currentValue, &flags);
     }
 
-    if(pAMVideoProcAmp)pAMVideoProcAmp->Release();
+    pAMVideoProcAmp->Release();
 #if 0
     if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
     if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
@@ -1881,7 +1872,7 @@ bool videoInput::getVideoSettingCamera(int deviceID, long Property, long &min, l
     IAMCameraControl *pIAMCameraControl = NULL;
 
     hr = VD->pVideoInputFilter->QueryInterface(IID_IAMCameraControl, (void**)&pIAMCameraControl);
-    if(FAILED(hr)){
+    if(FAILED(hr) || !pIAMCameraControl){
         DebugPrintOut("setVideoSetting - QueryInterface Error\n");
 #if 0
         if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
@@ -1902,7 +1893,7 @@ bool videoInput::getVideoSettingCamera(int deviceID, long Property, long &min, l
         hr = pIAMCameraControl->Get(Property, &currentValue, &flags);
     }
 
-    if(pIAMCameraControl)pIAMCameraControl->Release();
+    pIAMCameraControl->Release();
 #if 0
     if(VD->pVideoInputFilter)VD->pVideoInputFilter->Release();
     if(VD->pVideoInputFilter)VD->pVideoInputFilter = NULL;
@@ -2595,7 +2586,7 @@ int videoInput::start(int deviceID, videoDevice *VD){
 
     //we do this because webcams don't have a preview mode
     hr = VD->pCaptureGraph->FindInterface(&CAPTURE_MODE, &MEDIATYPE_Video, VD->pVideoInputFilter, IID_IAMStreamConfig, (void **)&VD->streamConf);
-    if(FAILED(hr)){
+    if(FAILED(hr) || !VD->streamConf){
         DebugPrintOut("ERROR: Couldn't config the stream!\n");
         stopDevice(deviceID);
         return hr;
@@ -2737,14 +2728,8 @@ int videoInput::start(int deviceID, videoDevice *VD){
 
     //lets try freeing our stream conf here too
     //this will fail if the device is already running
-    if(VD->streamConf){
-        VD->streamConf->Release();
-        VD->streamConf = NULL;
-    }else{
-        DebugPrintOut("ERROR: connecting device - prehaps it is already being used?\n");
-        stopDevice(deviceID);
-        return S_FALSE;
-    }
+    VD->streamConf->Release();
+    VD->streamConf = NULL;
 
 
     //NULL RENDERER//
@@ -3093,7 +3078,7 @@ HRESULT videoInput::routeCrossbar(ICaptureGraphBuilder2 **ppBuild, IBaseFilter *
     IAMCrossbar *pXBar1 = NULL;
     HRESULT hr = pBuild->FindInterface(&LOOK_UPSTREAM_ONLY, NULL, pVidFilter,
             IID_IAMCrossbar, (void**)&pXBar1);
-    if (SUCCEEDED(hr))
+    if (SUCCEEDED(hr) && pXBar1)
     {
 
         bool foundDevice = false;
@@ -3163,10 +3148,6 @@ HRESULT videoInput::routeCrossbar(ICaptureGraphBuilder2 **ppBuild, IBaseFilter *
         //we were getting a crash otherwise
         //if(Crossbar)Crossbar->Release();
         //if(Crossbar)Crossbar = NULL;
-
-        if(pXBar1)pXBar1->Release();
-        if(pXBar1)pXBar1 = NULL;
-
     }else{
         DebugPrintOut("SETUP: You are a webcam or snazzy firewire cam! No Crossbar needed\n");
         return hr;
diff --git a/modules/videoio/src/cap_gstreamer.cpp b/modules/videoio/src/cap_gstreamer.cpp
index c3100f56f3..8758b21dd9 100644
--- a/modules/videoio/src/cap_gstreamer.cpp
+++ b/modules/videoio/src/cap_gstreamer.cpp
@@ -1224,7 +1224,11 @@ Ptr<IVideoCapture> cv::createGStreamerCapture(int index)
 class CvVideoWriter_GStreamer : public CvVideoWriter
 {
 public:
-    CvVideoWriter_GStreamer() { init(); }
+    CvVideoWriter_GStreamer()
+        : pipeline(0), source(0), encodebin(0), file(0), buffer(0), input_pix_fmt(0),
+          num_frames(0), framerate(0)
+    {
+    }
     virtual ~CvVideoWriter_GStreamer() CV_OVERRIDE { close(); }
 
     virtual bool open( const char* filename, int fourcc,
@@ -1232,7 +1236,6 @@ public:
     virtual void close();
     virtual bool writeFrame( const IplImage* image ) CV_OVERRIDE;
 protected:
-    void init();
     const char* filenameToMimetype(const char* filename);
     GstElement* pipeline;
     GstElement* source;
@@ -1245,22 +1248,6 @@ protected:
     double framerate;
 };
 
-/*!
- * \brief CvVideoWriter_GStreamer::init
- * initialise all variables
- */
-void CvVideoWriter_GStreamer::init()
-{
-    pipeline = NULL;
-    source = NULL;
-    encodebin = NULL;
-    file = NULL;
-    buffer = NULL;
-
-    num_frames = 0;
-    framerate = 0;
-}
-
 /*!
  * \brief CvVideoWriter_GStreamer::close
  * ends the pipeline by sending EOS and destroys the pipeline and all
@@ -1282,17 +1269,19 @@ void CvVideoWriter_GStreamer::close()
         //wait for EOS to trickle down the pipeline. This will let all elements finish properly
         GstBus* bus = gst_element_get_bus(pipeline);
         GstMessage *msg = gst_bus_timed_pop_filtered(bus, GST_CLOCK_TIME_NONE, (GstMessageType)(GST_MESSAGE_ERROR | GST_MESSAGE_EOS));
-        if (GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ERROR)
+        if (!msg || GST_MESSAGE_TYPE(msg) == GST_MESSAGE_ERROR)
         {
             CV_WARN("Error during VideoWriter finalization\n");
+            if(msg != NULL)
+            {
+                gst_message_unref(msg);
+                g_object_unref(G_OBJECT(bus));
+            }
             return;
         }
 
-        if(msg != NULL)
-        {
-            gst_message_unref(msg);
-            g_object_unref(G_OBJECT(bus));
-        }
+        gst_message_unref(msg);
+        g_object_unref(G_OBJECT(bus));
 
         status = gst_element_set_state (pipeline, GST_STATE_NULL);
         if (status == GST_STATE_CHANGE_ASYNC)
diff --git a/modules/videoio/src/cap_msmf.cpp b/modules/videoio/src/cap_msmf.cpp
index 35043ee535..863f46bc89 100644
--- a/modules/videoio/src/cap_msmf.cpp
+++ b/modules/videoio/src/cap_msmf.cpp
@@ -91,7 +91,7 @@ static bool pMFCreateDXGIDeviceManager_initialized = false;
 static FN_MFCreateDXGIDeviceManager pMFCreateDXGIDeviceManager = NULL;
 static void init_MFCreateDXGIDeviceManager()
 {
-    HMODULE h = LoadLibraryA("mfplat.dll");
+    HMODULE h = LoadLibraryExA("mfplat.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
     if (h)
     {
         pMFCreateDXGIDeviceManager = (FN_MFCreateDXGIDeviceManager)GetProcAddress(h, "MFCreateDXGIDeviceManager");
@@ -1720,7 +1720,7 @@ bool CvCapture_MSMF::setProperty( int property_id, double value )
                 return setTime(duration * value, true);
             break;
         case CV_CAP_PROP_POS_FRAMES:
-            if (getFramerate(nativeFormat) != 0)
+            if (std::fabs(getFramerate(nativeFormat)) > 0)
                 return setTime(value  * 1e7 / getFramerate(nativeFormat), false);
             break;
         case CV_CAP_PROP_POS_MSEC:
@@ -1978,7 +1978,17 @@ private:
 
 CvVideoWriter_MSMF::CvVideoWriter_MSMF():
     MF(Media_Foundation::getInstance()),
-    initiated(false)
+    videoWidth(0),
+    videoHeight(0),
+    fps(0),
+    bitRate(0),
+    frameSize(0),
+    encodingFormat(),
+    inputFormat(),
+    streamIndex(0),
+    initiated(false),
+    rtStart(0),
+    rtDuration(0)
 {
 }
 
diff --git a/modules/videoio/src/cap_vfw.cpp b/modules/videoio/src/cap_vfw.cpp
index 0d71a0c2a5..f62baf4e71 100644
--- a/modules/videoio/src/cap_vfw.cpp
+++ b/modules/videoio/src/cap_vfw.cpp
@@ -377,8 +377,8 @@ LRESULT PASCAL CvCaptureCAM_VFW::frameCallback( HWND hWnd, VIDEOHDR* hdr )
     if (!hWnd) return FALSE;
 
     capture = (CvCaptureCAM_VFW*)capGetUserData(hWnd);
+    if (!capture) return (LRESULT)FALSE;
     capture->hdr = hdr;
-
     return (LRESULT)TRUE;
 }
 
diff --git a/samples/cpp/create_mask.cpp b/samples/cpp/create_mask.cpp
index b925cacba7..b90a7b70f2 100644
--- a/samples/cpp/create_mask.cpp
+++ b/samples/cpp/create_mask.cpp
@@ -12,26 +12,18 @@
 #include "opencv2/imgproc.hpp"
 #include "opencv2/imgcodecs.hpp"
 #include "opencv2/highgui.hpp"
-#include "opencv2/core.hpp"
 #include <iostream>
-#include <stdlib.h>
 
 using namespace std;
 using namespace cv;
 
-Mat img0, img1, res1, final;
+Mat src, img1, mask, final;
 
 Point point;
+vector<Point> pts;
 int drag = 0;
-
-int numpts = 100;
-Point* pts = new Point[100];
-
 int var = 0;
 int flag = 0;
-int flag1 = 0;
-
-int minx,miny,maxx,maxy,lenx,leny;
 
 void mouseHandler(int, int, int, int, void*);
 
@@ -40,16 +32,17 @@ void mouseHandler(int event, int x, int y, int, void*)
 
     if (event == EVENT_LBUTTONDOWN && !drag)
     {
-        if(flag1 == 0)
+        if (flag == 0)
         {
-            if(var==0)
-                img1 = img0.clone();
+            if (var == 0)
+                img1 = src.clone();
             point = Point(x, y);
-            circle(img1,point,2,Scalar(0, 0, 255),-1, 8, 0);
-            pts[var] = point;
+            circle(img1, point, 2, Scalar(0, 0, 255), -1, 8, 0);
+            pts.push_back(point);
             var++;
             drag  = 1;
-            if(var>1)
+
+            if (var > 1)
                 line(img1,pts[var-2], point, Scalar(0, 0, 255), 2, 8, 0);
 
             imshow("Source", img1);
@@ -59,103 +52,68 @@ void mouseHandler(int event, int x, int y, int, void*)
     if (event == EVENT_LBUTTONUP && drag)
     {
         imshow("Source", img1);
-
         drag = 0;
     }
+
     if (event == EVENT_RBUTTONDOWN)
     {
-        flag1 = 1;
-        img1 = img0.clone();
-        for(int i = var; i < numpts ; i++)
-            pts[i] = point;
+        flag = 1;
+        img1 = src.clone();
 
-        if(var!=0)
+        if (var != 0)
         {
-            const Point* pts3[1] = {&pts[0]};
-            polylines( img1, pts3, &numpts,1, 1, Scalar(0,0,0), 2, 8, 0);
+            polylines( img1, pts, 1, Scalar(0,0,0), 2, 8, 0);
         }
 
-        for(int i=0;i<var;i++)
-        {
-            minx = min(minx,pts[i].x);
-            maxx = max(maxx,pts[i].x);
-            miny = min(miny,pts[i].y);
-            maxy = max(maxy,pts[i].y);
-        }
-        lenx = maxx - minx;
-        leny = maxy - miny;
-
         imshow("Source", img1);
     }
 
     if (event == EVENT_RBUTTONUP)
     {
         flag = var;
-
-        final = Mat::zeros(img0.size(),CV_8UC3);
-        res1 = Mat::zeros(img0.size(),CV_8UC1);
-        const Point* pts4[1] = {&pts[0]};
-
-        fillPoly(res1, pts4,&numpts, 1, Scalar(255, 255, 255), 8, 0);
-        bitwise_and(img0, img0, final,res1);
-        imshow("mask",res1);
-        imwrite("mask.png",res1);
-
+        final = Mat::zeros(src.size(), CV_8UC3);
+        mask = Mat::zeros(src.size(), CV_8UC1);
+
+        vector<vector<Point> > vpts;
+        vpts.push_back(pts);
+        fillPoly(mask, vpts, Scalar(255, 255, 255), 8, 0);
+        bitwise_and(src, src, final, mask);
+        imshow("Mask", mask);
+        imshow("Result", final);
         imshow("Source", img1);
-
     }
+
     if (event == EVENT_MBUTTONDOWN)
     {
-        for(int i = 0; i < numpts ; i++)
-        {
-            pts[i].x=0;
-            pts[i].y=0;
-        }
+        pts.clear();
         var = 0;
-        flag1 = 0;
-        minx = INT_MAX; miny = INT_MAX; maxx = INT_MIN; maxy = INT_MIN;
-        imshow("Source", img0);
         drag = 0;
+        flag = 0;
+        imshow("Source", src);
     }
 }
 
-static void help()
-{
-    cout << "\nThis program demonstrates using mouse events"
-        "\nCall:\n"
-        "./create_mask <image_name>\n"
-        "\n"
-        "\tleft mouse button - set a point to create mask shape"
-        "\n"
-        "\tright mouse button - create mask from points\n"
-        "\tmiddle mouse button - reset\n" << endl;
-}
-
 int main(int argc, char **argv)
 {
-    cv::CommandLineParser parser(argc, argv, "{@input | ../data/lena.jpg | input image}");
-    help();
-    string input_image = parser.get<string>("@input");
-    if (input_image.empty())
-    {
-        parser.printMessage();
-        parser.printErrors();
-        return 0;
-    }
-
-    Mat src = imread(input_image);
-
-    minx = INT_MAX; miny = INT_MAX; maxx = INT_MIN; maxy = INT_MIN;
+    CommandLineParser parser(argc, argv, "{@input | ../data/lena.jpg | input image}");
+    parser.about("This program demonstrates using mouse events\n");
+    parser.printMessage();
+    cout << "\n\tleft mouse button - set a point to create mask shape\n"
+        "\tright mouse button - create mask from points\n"
+        "\tmiddle mouse button - reset\n";
+    String input_image = parser.get<String>("@input");
 
-    img0 = src;
+    src = imread(input_image);
 
-    res1 = Mat::zeros(img0.size(),CV_8UC1);
-    final = Mat::zeros(img0.size(),CV_8UC3);
-    //////////// source image ///////////////////
+    if (src.empty())
+        {
+        printf("Error opening image: %s\n", input_image.c_str());
+        return 0;
+        }
 
-    namedWindow("Source", 1);
+    namedWindow("Source", WINDOW_AUTOSIZE);
     setMouseCallback("Source", mouseHandler, NULL);
-    imshow("Source", img0);
+    imshow("Source", src);
     waitKey(0);
 
     return 0;
diff --git a/samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp b/samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp
new file mode 100755
index 0000000000..059df8bd55
--- /dev/null
+++ b/samples/cpp/tutorial_code/ImgProc/out_of_focus_deblur_filter/out_of_focus_deblur_filter.cpp
@@ -0,0 +1,149 @@
+/**
+* @brief You will learn how to recover an out-of-focus image by Wiener filter
+* @author Karpushin Vladislav, karpushin@ngs.ru, https://github.com/VladKarpushin
+*/
+#include <iostream>
+#include "opencv2/imgproc.hpp"
+#include "opencv2/imgcodecs.hpp"
+
+using namespace cv;
+using namespace std;
+
+void help();
+void calcPSF(Mat& outputImg, Size filterSize, int R);
+void fftshift(const Mat& inputImg, Mat& outputImg);
+void filter2DFreq(const Mat& inputImg, Mat& outputImg, const Mat& H);
+void calcWnrFilter(const Mat& input_h_PSF, Mat& output_G, double nsr);
+
+const String keys =
+"{help h usage ? |             | print this message   }"
+"{image          |original.JPG | input image name     }"
+"{R              |53           | radius               }"
+"{SNR            |5200         | signal to noise ratio}"
+;
+
+int main(int argc, char *argv[])
+{
+    help();
+    CommandLineParser parser(argc, argv, keys);
+    if (parser.has("help"))
+    {
+        parser.printMessage();
+        return 0;
+    }
+
+    int R = parser.get<int>("R");
+    int snr = parser.get<int>("SNR");
+    string strInFileName = parser.get<String>("image");
+
+    if (!parser.check())
+    {
+        parser.printErrors();
+        return 0;
+    }
+
+    Mat imgIn;
+    imgIn = imread(strInFileName, IMREAD_GRAYSCALE);
+    if (imgIn.empty()) //check whether the image is loaded or not
+    {
+        cout << "ERROR : Image cannot be loaded..!!" << endl;
+        return -1;
+    }
+
+    Mat imgOut;
+
+//! [main]
+    // it needs to process even image only
+    Rect roi = Rect(0, 0, imgIn.cols & -2, imgIn.rows & -2);
+
+    //Hw calculation (start)
+    Mat Hw, h;
+    calcPSF(h, roi.size(), R);
+    calcWnrFilter(h, Hw, 1.0 / double(snr));
+    //Hw calculation (stop)
+
+    // filtering (start)
+    filter2DFreq(imgIn(roi), imgOut, Hw);
+    // filtering (stop)
+//! [main]
+
+    imgOut.convertTo(imgOut, CV_8U);
+    normalize(imgOut, imgOut, 0, 255, NORM_MINMAX);
+    imwrite("result.jpg", imgOut);
+    return 0;
+}
+
+void help()
+{
+    cout << "2018-07-12" << endl;
+    cout << "DeBlur_v8" << endl;
+    cout << "You will learn how to recover an out-of-focus image by Wiener filter" << endl;
+}
+
+//! [calcPSF]
+void calcPSF(Mat& outputImg, Size filterSize, int R)
+{
+    Mat h(filterSize, CV_32F, Scalar(0));
+    Point point(filterSize.width / 2, filterSize.height / 2);
+    circle(h, point, R, 255, -1, 8);
+    Scalar summa = sum(h);
+    outputImg = h / summa[0];
+}
+//! [calcPSF]
+
+//! [fftshift]
+void fftshift(const Mat& inputImg, Mat& outputImg)
+{
+    outputImg = inputImg.clone();
+    int cx = outputImg.cols / 2;
+    int cy = outputImg.rows / 2;
+    Mat q0(outputImg, Rect(0, 0, cx, cy));
+    Mat q1(outputImg, Rect(cx, 0, cx, cy));
+    Mat q2(outputImg, Rect(0, cy, cx, cy));
+    Mat q3(outputImg, Rect(cx, cy, cx, cy));
+    Mat tmp;
+    q0.copyTo(tmp);
+    q3.copyTo(q0);
+    tmp.copyTo(q3);
+    q1.copyTo(tmp);
+    q2.copyTo(q1);
+    tmp.copyTo(q2);
+}
+//! [fftshift]
+
+//! [filter2DFreq]
+void filter2DFreq(const Mat& inputImg, Mat& outputImg, const Mat& H)
+{
+    Mat planes[2] = { Mat_<float>(inputImg.clone()), Mat::zeros(inputImg.size(), CV_32F) };
+    Mat complexI;
+    merge(planes, 2, complexI);
+    dft(complexI, complexI, DFT_SCALE);
+
+    Mat planesH[2] = { Mat_<float>(H.clone()), Mat::zeros(H.size(), CV_32F) };
+    Mat complexH;
+    merge(planesH, 2, complexH);
+    Mat complexIH;
+    mulSpectrums(complexI, complexH, complexIH, 0);
+
+    idft(complexIH, complexIH);
+    split(complexIH, planes);
+    outputImg = planes[0];
+}
+//! [filter2DFreq]
+
+//! [calcWnrFilter]
+void calcWnrFilter(const Mat& input_h_PSF, Mat& output_G, double nsr)
+{
+    Mat h_PSF_shifted;
+    fftshift(input_h_PSF, h_PSF_shifted);
+    Mat planes[2] = { Mat_<float>(h_PSF_shifted.clone()), Mat::zeros(h_PSF_shifted.size(), CV_32F) };
+    Mat complexI;
+    merge(planes, 2, complexI);
+    dft(complexI, complexI);
+    split(complexI, planes);
+    Mat denom;
+    pow(abs(planes[0]), 2, denom);
+    denom += nsr;
+    divide(planes[0], denom, output_G);
+}
+//! [calcWnrFilter]
diff --git a/samples/dnn/object_detection.py b/samples/dnn/object_detection.py
index 386e02890d..329c349e49 100644
--- a/samples/dnn/object_detection.py
+++ b/samples/dnn/object_detection.py
@@ -190,7 +190,7 @@ while cv.waitKey(1) < 0:
     net.setInput(blob)
     if net.getLayer(0).outputNameToIndex('im_info') != -1:  # Faster-RCNN or R-FCN
         frame = cv.resize(frame, (inpWidth, inpHeight))
-        net.setInput(np.array([inpHeight, inpWidth, 1.6], dtype=np.float32), 'im_info')
+        net.setInput(np.array([[inpHeight, inpWidth, 1.6]], dtype=np.float32), 'im_info')
     outs = net.forward(getOutputsNames(net))
 
     postprocess(frame, outs)