diff --git a/samples/CMakeLists.txt b/samples/CMakeLists.txt
index 505cd6e3a1..799f34f100 100644
--- a/samples/CMakeLists.txt
+++ b/samples/CMakeLists.txt
@@ -6,6 +6,7 @@
 add_subdirectory(c)
 add_subdirectory(cpp)
 add_subdirectory(gpu)
+add_subdirectory(ocl)
 
 if(ANDROID AND BUILD_ANDROID_EXAMPLES)
   add_subdirectory(android)
diff --git a/samples/ocl/CMakeLists.txt b/samples/ocl/CMakeLists.txt
new file mode 100644
index 0000000000..4d89ff40d7
--- /dev/null
+++ b/samples/ocl/CMakeLists.txt
@@ -0,0 +1,64 @@
+SET(OPENCV_OCL_SAMPLES_REQUIRED_DEPS opencv_core opencv_flann opencv_imgproc opencv_highgui
+                                     opencv_ml opencv_video opencv_objdetect opencv_features2d
+                                     opencv_calib3d opencv_legacy opencv_contrib opencv_ocl
+                                     opencv_nonfree)
+
+ocv_check_dependencies(${OPENCV_OCL_SAMPLES_REQUIRED_DEPS})
+
+if(BUILD_EXAMPLES AND OCV_DEPENDENCIES_FOUND)
+  set(project "ocl")
+  string(TOUPPER "${project}" project_upper)
+    
+  project("${project}_samples")
+
+  ocv_include_modules(${OPENCV_OCL_SAMPLES_REQUIRED_DEPS})
+
+  if(HAVE_OPENCL)
+    ocv_include_directories(${OPENCL_INCLUDE_DIR})
+  endif()
+
+  if(CMAKE_COMPILER_IS_GNUCXX AND NOT ENABLE_NOISY_WARNINGS)
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wno-unused-function")
+  endif()
+
+  # ---------------------------------------------
+  #      Define executable targets
+  # ---------------------------------------------
+  MACRO(OPENCV_DEFINE_OCL_EXAMPLE name srcs)
+    set(the_target "example_${project}_${name}")
+    add_executable(${the_target} ${srcs})
+
+    target_link_libraries(${the_target} ${OPENCV_LINKER_LIBS} ${OPENCV_OCL_SAMPLES_REQUIRED_DEPS})
+
+    set_target_properties(${the_target} PROPERTIES
+      OUTPUT_NAME "${name}_${project}"                                       
+      PROJECT_LABEL "(EXAMPLE_${project_upper}) ${name}")
+        
+    if(ENABLE_SOLUTION_FOLDERS)
+      set_target_properties(${the_target} PROPERTIES FOLDER "samples//${project}")
+    endif()
+
+    if(WIN32)
+      if(MSVC AND NOT BUILD_SHARED_LIBS)
+        set_target_properties(${the_target} PROPERTIES LINK_FLAGS "/NODEFAULTLIB:atlthunk.lib /NODEFAULTLIB:atlsd.lib /DEBUG")
+      endif()
+      install(TARGETS ${the_target} RUNTIME DESTINATION "samples/${project}" COMPONENT main)
+    endif()
+  ENDMACRO()
+
+  file(GLOB all_samples RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.cpp)
+
+  foreach(sample_filename ${all_samples})
+    get_filename_component(sample ${sample_filename} NAME_WE)
+    file(GLOB sample_srcs RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ${sample}.*)
+    OPENCV_DEFINE_OCL_EXAMPLE(${sample} ${sample_srcs})
+  endforeach()
+endif()
+
+if (NOT WIN32)
+  file(GLOB install_list *.c *.cpp *.jpg *.png *.data makefile.* build_all.sh *.dsp *.cmd )
+  install(FILES ${install_list}
+          DESTINATION share/opencv/samples/${project}
+          PERMISSIONS OWNER_READ GROUP_READ WORLD_READ)
+endif()
+
diff --git a/samples/ocl/hog.cpp b/samples/ocl/hog.cpp
new file mode 100644
index 0000000000..96a4af0a7d
--- /dev/null
+++ b/samples/ocl/hog.cpp
@@ -0,0 +1,459 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <sstream>
+#include <iomanip>
+#include <stdexcept>
+#include "opencv2/ocl/ocl.hpp"
+#include "opencv2/highgui/highgui.hpp"
+
+using namespace std;
+using namespace cv;
+
+bool help_showed = false;
+
+class Args
+{
+public:
+    Args();
+    static Args read(int argc, char** argv);
+
+    string src;
+    bool src_is_video;
+    bool src_is_camera;
+    int camera_id;
+
+    bool write_video;
+    string dst_video;
+    double dst_video_fps;
+
+    bool make_gray;
+
+    bool resize_src;
+    int width, height;
+
+    double scale;
+    int nlevels;
+    int gr_threshold;
+
+    double hit_threshold;
+    bool hit_threshold_auto;
+
+    int win_width;
+    int win_stride_width, win_stride_height;
+
+    bool gamma_corr;
+};
+
+
+class App
+{
+public:
+    App(const Args& s);
+    void run();
+
+    void handleKey(char key);
+
+    void hogWorkBegin();
+    void hogWorkEnd();
+    string hogWorkFps() const;
+
+    void workBegin();
+    void workEnd();
+    string workFps() const;
+
+    string message() const;
+
+private:
+    App operator=(App&);
+
+    Args args;
+    bool running;
+
+    bool use_gpu;
+    bool make_gray;
+    double scale;
+    int gr_threshold;
+    int nlevels;
+    double hit_threshold;
+    bool gamma_corr;
+
+    int64 hog_work_begin;
+    double hog_work_fps;
+
+    int64 work_begin;
+    double work_fps;
+};
+
+static void printHelp()
+{
+    cout << "Histogram of Oriented Gradients descriptor and detector sample.\n"
+         << "\nUsage: hog_gpu\n"
+         << "  (<image>|--video <vide>|--camera <camera_id>) # frames source\n"
+         << "  [--make_gray <true/false>] # convert image to gray one or not\n"
+         << "  [--resize_src <true/false>] # do resize of the source image or not\n"
+         << "  [--width <int>] # resized image width\n"
+         << "  [--height <int>] # resized image height\n"
+         << "  [--hit_threshold <double>] # classifying plane distance threshold (0.0 usually)\n"
+         << "  [--scale <double>] # HOG window scale factor\n"
+         << "  [--nlevels <int>] # max number of HOG window scales\n"
+         << "  [--win_width <int>] # width of the window (48 or 64)\n"
+         << "  [--win_stride_width <int>] # distance by OX axis between neighbour wins\n"
+         << "  [--win_stride_height <int>] # distance by OY axis between neighbour wins\n"
+         << "  [--gr_threshold <int>] # merging similar rects constant\n"
+         << "  [--gamma_correct <int>] # do gamma correction or not\n"
+         << "  [--write_video <bool>] # write video or not\n"
+         << "  [--dst_video <path>] # output video path\n"
+         << "  [--dst_video_fps <double>] # output video fps\n";
+    help_showed = true;
+}
+
+int main(int argc, char** argv)
+{
+    try
+    {
+        if (argc < 2)
+            printHelp();
+        Args args = Args::read(argc, argv);
+        if (help_showed)
+            return -1;
+        App app(args);
+        app.run();
+    }
+    catch (const Exception& e) { return cout << "error: "  << e.what() << endl, 1; }
+    catch (const exception& e) { return cout << "error: "  << e.what() << endl, 1; }
+    catch(...) { return cout << "unknown exception" << endl, 1; }
+    return 0;
+}
+
+
+Args::Args()
+{
+    src_is_video = false;
+    src_is_camera = false;
+    camera_id = 0;
+
+    write_video = false;
+    dst_video_fps = 24.;
+
+    make_gray = false;
+
+    resize_src = false;
+    width = 640;
+    height = 480;
+
+    scale = 1.05;
+    nlevels = 13;
+    gr_threshold = 8;
+    hit_threshold = 1.4;
+    hit_threshold_auto = true;
+
+    win_width = 48;
+    win_stride_width = 8;
+    win_stride_height = 8;
+
+    gamma_corr = true;
+}
+
+
+Args Args::read(int argc, char** argv)
+{
+    Args args;
+    for (int i = 1; i < argc; i++)
+    {
+        if (string(argv[i]) == "--make_gray") args.make_gray = (string(argv[++i]) == "true");
+        else if (string(argv[i]) == "--resize_src") args.resize_src = (string(argv[++i]) == "true");
+        else if (string(argv[i]) == "--width") args.width = atoi(argv[++i]);
+        else if (string(argv[i]) == "--height") args.height = atoi(argv[++i]);
+        else if (string(argv[i]) == "--hit_threshold")
+        {
+            args.hit_threshold = atof(argv[++i]);
+            args.hit_threshold_auto = false;
+        }
+        else if (string(argv[i]) == "--scale") args.scale = atof(argv[++i]);
+        else if (string(argv[i]) == "--nlevels") args.nlevels = atoi(argv[++i]);
+        else if (string(argv[i]) == "--win_width") args.win_width = atoi(argv[++i]);
+        else if (string(argv[i]) == "--win_stride_width") args.win_stride_width = atoi(argv[++i]);
+        else if (string(argv[i]) == "--win_stride_height") args.win_stride_height = atoi(argv[++i]);
+        else if (string(argv[i]) == "--gr_threshold") args.gr_threshold = atoi(argv[++i]);
+        else if (string(argv[i]) == "--gamma_correct") args.gamma_corr = (string(argv[++i]) == "true");
+        else if (string(argv[i]) == "--write_video") args.write_video = (string(argv[++i]) == "true");
+        else if (string(argv[i]) == "--dst_video") args.dst_video = argv[++i];
+        else if (string(argv[i]) == "--dst_video_fps") args.dst_video_fps = atof(argv[++i]);
+        else if (string(argv[i]) == "--help") printHelp();
+        else if (string(argv[i]) == "--video") { args.src = argv[++i]; args.src_is_video = true; }
+        else if (string(argv[i]) == "--camera") { args.camera_id = atoi(argv[++i]); args.src_is_camera = true; }
+        else if (args.src.empty()) args.src = argv[i];
+        else throw runtime_error((string("unknown key: ") + argv[i]));
+    }
+    return args;
+}
+
+
+App::App(const Args& s)
+{
+    args = s;
+    cout << "\nControls:\n"
+         << "\tESC - exit\n"
+         << "\tm - change mode GPU <-> CPU\n"
+         << "\tg - convert image to gray or not\n"
+         << "\t1/q - increase/decrease HOG scale\n"
+         << "\t2/w - increase/decrease levels count\n"
+         << "\t3/e - increase/decrease HOG group threshold\n"
+         << "\t4/r - increase/decrease hit threshold\n"
+         << endl;
+
+    use_gpu = true;
+    make_gray = args.make_gray;
+    scale = args.scale;
+    gr_threshold = args.gr_threshold;
+    nlevels = args.nlevels;
+
+    if (args.hit_threshold_auto)
+        args.hit_threshold = args.win_width == 48 ? 1.4 : 0.;
+    hit_threshold = args.hit_threshold;
+
+    gamma_corr = args.gamma_corr;
+
+    if (args.win_width != 64 && args.win_width != 48)
+        args.win_width = 64;
+
+    cout << "Scale: " << scale << endl;
+    if (args.resize_src)
+        cout << "Resized source: (" << args.width << ", " << args.height << ")\n";
+    cout << "Group threshold: " << gr_threshold << endl;
+    cout << "Levels number: " << nlevels << endl;
+    cout << "Win width: " << args.win_width << endl;
+    cout << "Win stride: (" << args.win_stride_width << ", " << args.win_stride_height << ")\n";
+    cout << "Hit threshold: " << hit_threshold << endl;
+    cout << "Gamma correction: " << gamma_corr << endl;
+    cout << endl;
+}
+
+
+void App::run()
+{
+	std::vector<ocl::Info> oclinfo;
+	ocl::getDevice(oclinfo);
+    running = true;
+    cv::VideoWriter video_writer;
+
+    Size win_size(args.win_width, args.win_width * 2); //(64, 128) or (48, 96)
+    Size win_stride(args.win_stride_width, args.win_stride_height);
+
+    // Create HOG descriptors and detectors here
+    vector<float> detector;
+    if (win_size == Size(64, 128))
+        detector = cv::ocl::HOGDescriptor::getPeopleDetector64x128();
+    else
+        detector = cv::ocl::HOGDescriptor::getPeopleDetector48x96();
+
+    cv::ocl::HOGDescriptor gpu_hog(win_size, Size(16, 16), Size(8, 8), Size(8, 8), 9,
+                                   cv::ocl::HOGDescriptor::DEFAULT_WIN_SIGMA, 0.2, gamma_corr,
+                                   cv::ocl::HOGDescriptor::DEFAULT_NLEVELS);
+    cv::HOGDescriptor cpu_hog(win_size, Size(16, 16), Size(8, 8), Size(8, 8), 9, 1, -1,
+                              HOGDescriptor::L2Hys, 0.2, gamma_corr, cv::HOGDescriptor::DEFAULT_NLEVELS);
+    gpu_hog.setSVMDetector(detector);
+    cpu_hog.setSVMDetector(detector);
+
+    while (running)
+    {
+        VideoCapture vc;
+        Mat frame;
+
+        if (args.src_is_video)
+        {
+            vc.open(args.src.c_str());
+            if (!vc.isOpened())
+                throw runtime_error(string("can't open video file: " + args.src));
+            vc >> frame;
+        }
+        else if (args.src_is_camera)
+        {
+            vc.open(args.camera_id);
+            if (!vc.isOpened())
+            {
+                stringstream msg;
+                msg << "can't open camera: " << args.camera_id;
+                throw runtime_error(msg.str());
+            }
+            vc >> frame;
+        }
+        else
+        {
+            frame = imread(args.src);
+            if (frame.empty())
+                throw runtime_error(string("can't open image file: " + args.src));
+        }
+
+        Mat img_aux, img, img_to_show;
+        ocl::oclMat gpu_img;
+
+        // Iterate over all frames
+        while (running && !frame.empty())
+        {
+            workBegin();
+
+            // Change format of the image
+            if (make_gray) cvtColor(frame, img_aux, CV_BGR2GRAY);
+            else if (use_gpu) cvtColor(frame, img_aux, CV_BGR2BGRA);
+            else frame.copyTo(img_aux);
+
+            // Resize image
+            if (args.resize_src) resize(img_aux, img, Size(args.width, args.height));
+            else img = img_aux;
+            img_to_show = img;
+
+            gpu_hog.nlevels = nlevels;
+            cpu_hog.nlevels = nlevels;
+
+            vector<Rect> found;
+
+            // Perform HOG classification
+            hogWorkBegin();
+            if (use_gpu)
+            {
+                gpu_img.upload(img);
+                gpu_hog.detectMultiScale(gpu_img, found, hit_threshold, win_stride,
+                                         Size(0, 0), scale, gr_threshold);
+            }
+            else cpu_hog.detectMultiScale(img, found, hit_threshold, win_stride,
+                                          Size(0, 0), scale, gr_threshold);
+            hogWorkEnd();
+
+            // Draw positive classified windows
+            for (size_t i = 0; i < found.size(); i++)
+            {
+                Rect r = found[i];
+                rectangle(img_to_show, r.tl(), r.br(), CV_RGB(0, 255, 0), 3);
+            }
+
+            if (use_gpu)
+                putText(img_to_show, "Mode: GPU", Point(5, 25), FONT_HERSHEY_SIMPLEX, 1., Scalar(255, 100, 0), 2);
+            else
+                putText(img_to_show, "Mode: CPU", Point(5, 25), FONT_HERSHEY_SIMPLEX, 1., Scalar(255, 100, 0), 2);
+            putText(img_to_show, "FPS (HOG only): " + hogWorkFps(), Point(5, 65), FONT_HERSHEY_SIMPLEX, 1., Scalar(255, 100, 0), 2);
+            putText(img_to_show, "FPS (total): " + workFps(), Point(5, 105), FONT_HERSHEY_SIMPLEX, 1., Scalar(255, 100, 0), 2);
+            imshow("opencv_gpu_hog", img_to_show);
+
+            if (args.src_is_video || args.src_is_camera) vc >> frame;
+
+            workEnd();
+
+            if (args.write_video)
+            {
+                if (!video_writer.isOpened())
+                {
+                    video_writer.open(args.dst_video, CV_FOURCC('x','v','i','d'), args.dst_video_fps,
+                                      img_to_show.size(), true);
+                    if (!video_writer.isOpened())
+                        throw std::runtime_error("can't create video writer");
+                }
+
+                if (make_gray) cvtColor(img_to_show, img, CV_GRAY2BGR);
+                else cvtColor(img_to_show, img, CV_BGRA2BGR);
+
+                video_writer << img;
+            }
+
+            handleKey((char)waitKey(3));
+        }
+    }
+}
+
+
+void App::handleKey(char key)
+{
+    switch (key)
+    {
+    case 27:
+        running = false;
+        break;
+    case 'm':
+    case 'M':
+        use_gpu = !use_gpu;
+        cout << "Switched to " << (use_gpu ? "CUDA" : "CPU") << " mode\n";
+        break;
+    case 'g':
+    case 'G':
+        make_gray = !make_gray;
+        cout << "Convert image to gray: " << (make_gray ? "YES" : "NO") << endl;
+        break;
+    case '1':
+        scale *= 1.05;
+        cout << "Scale: " << scale << endl;
+        break;
+    case 'q':
+    case 'Q':
+        scale /= 1.05;
+        cout << "Scale: " << scale << endl;
+        break;
+    case '2':
+        nlevels++;
+        cout << "Levels number: " << nlevels << endl;
+        break;
+    case 'w':
+    case 'W':
+        nlevels = max(nlevels - 1, 1);
+        cout << "Levels number: " << nlevels << endl;
+        break;
+    case '3':
+        gr_threshold++;
+        cout << "Group threshold: " << gr_threshold << endl;
+        break;
+    case 'e':
+    case 'E':
+        gr_threshold = max(0, gr_threshold - 1);
+        cout << "Group threshold: " << gr_threshold << endl;
+        break;
+    case '4':
+        hit_threshold+=0.25;
+        cout << "Hit threshold: " << hit_threshold << endl;
+        break;
+    case 'r':
+    case 'R':
+        hit_threshold = max(0.0, hit_threshold - 0.25);
+        cout << "Hit threshold: " << hit_threshold << endl;
+        break;
+    case 'c':
+    case 'C':
+        gamma_corr = !gamma_corr;
+        cout << "Gamma correction: " << gamma_corr << endl;
+        break;
+    }
+}
+
+
+inline void App::hogWorkBegin() { hog_work_begin = getTickCount(); }
+
+inline void App::hogWorkEnd()
+{
+    int64 delta = getTickCount() - hog_work_begin;
+    double freq = getTickFrequency();
+    hog_work_fps = freq / delta;
+}
+
+inline string App::hogWorkFps() const
+{
+    stringstream ss;
+    ss << hog_work_fps;
+    return ss.str();
+}
+
+
+inline void App::workBegin() { work_begin = getTickCount(); }
+
+inline void App::workEnd()
+{
+    int64 delta = getTickCount() - work_begin;
+    double freq = getTickFrequency();
+    work_fps = freq / delta;
+}
+
+inline string App::workFps() const
+{
+    stringstream ss;
+    ss << work_fps;
+    return ss.str();
+}
+