diff --git a/modules/core/include/opencv2/core.hpp b/modules/core/include/opencv2/core.hpp
index 1e271a6fd3..c8216b28f3 100644
--- a/modules/core/include/opencv2/core.hpp
+++ b/modules/core/include/opencv2/core.hpp
@@ -2997,7 +2997,8 @@ public:
 class CV_EXPORTS Formatter
 {
 public:
-    enum { FMT_DEFAULT = 0,
+    enum FormatType {
+           FMT_DEFAULT = 0,
            FMT_MATLAB  = 1,
            FMT_CSV     = 2,
            FMT_PYTHON  = 3,
@@ -3014,7 +3015,7 @@ public:
     virtual void set64fPrecision(int p = 16) = 0;
     virtual void setMultiline(bool ml = true) = 0;
 
-    static Ptr<Formatter> get(int fmt = FMT_DEFAULT);
+    static Ptr<Formatter> get(Formatter::FormatType fmt = FMT_DEFAULT);
 
 };
 
@@ -3037,7 +3038,7 @@ String& operator << (String& out, const Mat& mtx)
 
 class CV_EXPORTS Algorithm;
 
-template<typename _Tp> struct ParamType {};
+template<typename _Tp, typename _EnumTp = void> struct ParamType {};
 
 
 /** @brief This is a base class for all more or less complex algorithms in OpenCV
@@ -3150,9 +3151,9 @@ protected:
     void writeFormat(FileStorage& fs) const;
 };
 
-struct Param {
-    enum { INT=0, BOOLEAN=1, REAL=2, STRING=3, MAT=4, MAT_VECTOR=5, ALGORITHM=6, FLOAT=7,
-           UNSIGNED_INT=8, UINT64=9, UCHAR=11, SCALAR=12 };
+enum struct Param {
+    INT=0, BOOLEAN=1, REAL=2, STRING=3, MAT=4, MAT_VECTOR=5, ALGORITHM=6, FLOAT=7,
+    UNSIGNED_INT=8, UINT64=9, UCHAR=11, SCALAR=12
 };
 
 
@@ -3162,7 +3163,7 @@ template<> struct ParamType<bool>
     typedef bool const_param_type;
     typedef bool member_type;
 
-    enum { type = Param::BOOLEAN };
+    static const Param type = Param::BOOLEAN;
 };
 
 template<> struct ParamType<int>
@@ -3170,7 +3171,7 @@ template<> struct ParamType<int>
     typedef int const_param_type;
     typedef int member_type;
 
-    enum { type = Param::INT };
+    static const Param type = Param::INT;
 };
 
 template<> struct ParamType<double>
@@ -3178,7 +3179,7 @@ template<> struct ParamType<double>
     typedef double const_param_type;
     typedef double member_type;
 
-    enum { type = Param::REAL };
+    static const Param type = Param::REAL;
 };
 
 template<> struct ParamType<String>
@@ -3186,7 +3187,7 @@ template<> struct ParamType<String>
     typedef const String& const_param_type;
     typedef String member_type;
 
-    enum { type = Param::STRING };
+    static const Param type = Param::STRING;
 };
 
 template<> struct ParamType<Mat>
@@ -3194,7 +3195,7 @@ template<> struct ParamType<Mat>
     typedef const Mat& const_param_type;
     typedef Mat member_type;
 
-    enum { type = Param::MAT };
+    static const Param type = Param::MAT;
 };
 
 template<> struct ParamType<std::vector<Mat> >
@@ -3202,7 +3203,7 @@ template<> struct ParamType<std::vector<Mat> >
     typedef const std::vector<Mat>& const_param_type;
     typedef std::vector<Mat> member_type;
 
-    enum { type = Param::MAT_VECTOR };
+    static const Param type = Param::MAT_VECTOR;
 };
 
 template<> struct ParamType<Algorithm>
@@ -3210,7 +3211,7 @@ template<> struct ParamType<Algorithm>
     typedef const Ptr<Algorithm>& const_param_type;
     typedef Ptr<Algorithm> member_type;
 
-    enum { type = Param::ALGORITHM };
+    static const Param type = Param::ALGORITHM;
 };
 
 template<> struct ParamType<float>
@@ -3218,7 +3219,7 @@ template<> struct ParamType<float>
     typedef float const_param_type;
     typedef float member_type;
 
-    enum { type = Param::FLOAT };
+    static const Param type = Param::FLOAT;
 };
 
 template<> struct ParamType<unsigned>
@@ -3226,7 +3227,7 @@ template<> struct ParamType<unsigned>
     typedef unsigned const_param_type;
     typedef unsigned member_type;
 
-    enum { type = Param::UNSIGNED_INT };
+    static const Param type = Param::UNSIGNED_INT;
 };
 
 template<> struct ParamType<uint64>
@@ -3234,7 +3235,7 @@ template<> struct ParamType<uint64>
     typedef uint64 const_param_type;
     typedef uint64 member_type;
 
-    enum { type = Param::UINT64 };
+    static const Param type = Param::UINT64;
 };
 
 template<> struct ParamType<uchar>
@@ -3242,7 +3243,7 @@ template<> struct ParamType<uchar>
     typedef uchar const_param_type;
     typedef uchar member_type;
 
-    enum { type = Param::UCHAR };
+    static const Param type = Param::UCHAR;
 };
 
 template<> struct ParamType<Scalar>
@@ -3250,7 +3251,16 @@ template<> struct ParamType<Scalar>
     typedef const Scalar& const_param_type;
     typedef Scalar member_type;
 
-    enum { type = Param::SCALAR };
+    static const Param type = Param::SCALAR;
+};
+
+template<typename _Tp>
+struct ParamType<_Tp, typename std::enable_if< std::is_enum<_Tp>::value >::type>
+{
+    typedef typename std::underlying_type<_Tp>::type const_param_type;
+    typedef typename std::underlying_type<_Tp>::type member_type;
+
+    static const Param type = Param::INT;
 };
 
 //! @} core_basic
diff --git a/modules/core/include/opencv2/core/base.hpp b/modules/core/include/opencv2/core/base.hpp
index 24f92b5413..e5770553f7 100644
--- a/modules/core/include/opencv2/core/base.hpp
+++ b/modules/core/include/opencv2/core/base.hpp
@@ -440,17 +440,17 @@ configurations while CV_DbgAssert is only retained in the Debug configuration.
 #endif
 
 #define CV_Assert_1 CV_Assert
-#define CV_Assert_2( expr1, expr2 ) CV_Assert_1(expr1); CV_Assert_1(expr2)
-#define CV_Assert_3( expr1, expr2, expr3 ) CV_Assert_2(expr1, expr2); CV_Assert_1(expr3)
-#define CV_Assert_4( expr1, expr2, expr3, expr4 ) CV_Assert_3(expr1, expr2, expr3); CV_Assert_1(expr4)
-#define CV_Assert_5( expr1, expr2, expr3, expr4, expr5 ) CV_Assert_4(expr1, expr2, expr3, expr4); CV_Assert_1(expr5)
-#define CV_Assert_6( expr1, expr2, expr3, expr4, expr5, expr6 ) CV_Assert_5(expr1, expr2, expr3, expr4, expr5); CV_Assert_1(expr6)
-#define CV_Assert_7( expr1, expr2, expr3, expr4, expr5, expr6, expr7 ) CV_Assert_6(expr1, expr2, expr3, expr4, expr5, expr6 ); CV_Assert_1(expr7)
-#define CV_Assert_8( expr1, expr2, expr3, expr4, expr5, expr6, expr7, expr8 ) CV_Assert_7(expr1, expr2, expr3, expr4, expr5, expr6, expr7 ); CV_Assert_1(expr8)
-#define CV_Assert_9( expr1, expr2, expr3, expr4, expr5, expr6, expr7, expr8, expr9 ) CV_Assert_8(expr1, expr2, expr3, expr4, expr5, expr6, expr7, expr8 ); CV_Assert_1(expr9)
-#define CV_Assert_10( expr1, expr2, expr3, expr4, expr5, expr6, expr7, expr8, expr9, expr10 ) CV_Assert_9(expr1, expr2, expr3, expr4, expr5, expr6, expr7, expr8, expr9 ); CV_Assert_1(expr10)
-
-#define CV_Assert_N(...) do { __CV_CAT(CV_Assert_, __CV_VA_NUM_ARGS(__VA_ARGS__)) (__VA_ARGS__); } while(0)
+#define CV_Assert_2( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_1( __VA_ARGS__ ))
+#define CV_Assert_3( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_2( __VA_ARGS__ ))
+#define CV_Assert_4( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_3( __VA_ARGS__ ))
+#define CV_Assert_5( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_4( __VA_ARGS__ ))
+#define CV_Assert_6( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_5( __VA_ARGS__ ))
+#define CV_Assert_7( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_6( __VA_ARGS__ ))
+#define CV_Assert_8( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_7( __VA_ARGS__ ))
+#define CV_Assert_9( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_8( __VA_ARGS__ ))
+#define CV_Assert_10( expr, ... ) CV_Assert_1(expr); __CV_EXPAND(CV_Assert_9( __VA_ARGS__ ))
+
+#define CV_Assert_N(...) do { __CV_EXPAND(__CV_CAT(CV_Assert_, __CV_VA_NUM_ARGS(__VA_ARGS__)) (__VA_ARGS__)); } while(0)
 
 //! @endcond
 
@@ -467,7 +467,7 @@ configurations while CV_DbgAssert is only retained in the Debug configuration.
  */
 struct CV_EXPORTS Hamming
 {
-    enum { normType = NORM_HAMMING };
+    static const NormTypes normType = NORM_HAMMING;
     typedef unsigned char ValueType;
     typedef int ResultType;
 
diff --git a/modules/core/include/opencv2/core/cvdef.h b/modules/core/include/opencv2/core/cvdef.h
index 8c4ae7d9f9..cf97d53de8 100644
--- a/modules/core/include/opencv2/core/cvdef.h
+++ b/modules/core/include/opencv2/core/cvdef.h
@@ -80,7 +80,7 @@ namespace cv { namespace debug_build_guard { } using namespace debug_build_guard
 #endif
 
 #define __CV_VA_NUM_ARGS_HELPER(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, N, ...) N
-#define __CV_VA_NUM_ARGS(...) __CV_VA_NUM_ARGS_HELPER(__VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
+#define __CV_VA_NUM_ARGS(...) __CV_EXPAND(__CV_VA_NUM_ARGS_HELPER(__VA_ARGS__, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0))
 
 // undef problematic defines sometimes defined by system headers (windows.h in particular)
 #undef small
@@ -330,6 +330,142 @@ Cv64suf;
 #  define MAX(a,b)  ((a) < (b) ? (b) : (a))
 #endif
 
+///////////////////////////////////////// Enum operators ///////////////////////////////////////
+
+/**
+
+Provides compatibility operators for both classical and C++11 enum classes,
+as well as exposing the C++11 enum class members for backwards compatibility
+
+@code
+    // Provides operators required for flag enums
+    CV_ENUM_FLAGS(AccessFlag);
+
+    // Exposes the listed members of the enum class AccessFlag to the current namespace
+    CV_ENUM_CLASS_EXPOSE(AccessFlag, ACCESS_READ [, ACCESS_WRITE [, ...] ]);
+@endcode
+*/
+
+#define __CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST)                                              \
+static const EnumType MEMBER_CONST = EnumType::MEMBER_CONST;                                          \
+
+#define __CV_ENUM_CLASS_EXPOSE_2(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_1(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_3(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_2(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_4(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_3(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_5(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_4(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_6(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_5(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_7(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_6(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_8(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_7(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_CLASS_EXPOSE_9(EnumType, MEMBER_CONST, ...)                                         \
+__CV_ENUM_CLASS_EXPOSE_1(EnumType, MEMBER_CONST);                                                     \
+__CV_EXPAND(__CV_ENUM_CLASS_EXPOSE_8(EnumType, __VA_ARGS__));                                         \
+
+#define __CV_ENUM_FLAGS_LOGICAL_NOT(EnumType)                                                         \
+static inline bool operator!(const EnumType& val)                                                     \
+{                                                                                                     \
+    typedef std::underlying_type<EnumType>::type UnderlyingType;                                      \
+    return !static_cast<UnderlyingType>(val);                                                         \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_LOGICAL_NOT_EQ(Arg1Type, Arg2Type)                                            \
+static inline bool operator!=(const Arg1Type& a, const Arg2Type& b)                                   \
+{                                                                                                     \
+    return static_cast<int>(a) != static_cast<int>(b);                                                \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_LOGICAL_EQ(Arg1Type, Arg2Type)                                                \
+static inline bool operator==(const Arg1Type& a, const Arg2Type& b)                                   \
+{                                                                                                     \
+    return static_cast<int>(a) == static_cast<int>(b);                                                \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_NOT(EnumType)                                                         \
+static inline EnumType operator~(const EnumType& val)                                                 \
+{                                                                                                     \
+    typedef std::underlying_type<EnumType>::type UnderlyingType;                                      \
+    return static_cast<EnumType>(~static_cast<UnderlyingType>(val));                                  \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_OR(EnumType, Arg1Type, Arg2Type)                                      \
+static inline EnumType operator|(const Arg1Type& a, const Arg2Type& b)                                \
+{                                                                                                     \
+    typedef std::underlying_type<EnumType>::type UnderlyingType;                                      \
+    return static_cast<EnumType>(static_cast<UnderlyingType>(a) | static_cast<UnderlyingType>(b));    \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_AND(EnumType, Arg1Type, Arg2Type)                                     \
+static inline EnumType operator&(const Arg1Type& a, const Arg2Type& b)                                \
+{                                                                                                     \
+    typedef std::underlying_type<EnumType>::type UnderlyingType;                                      \
+    return static_cast<EnumType>(static_cast<UnderlyingType>(a) & static_cast<UnderlyingType>(b));    \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_XOR(EnumType, Arg1Type, Arg2Type)                                     \
+static inline EnumType operator^(const Arg1Type& a, const Arg2Type& b)                                \
+{                                                                                                     \
+    typedef std::underlying_type<EnumType>::type UnderlyingType;                                      \
+    return static_cast<EnumType>(static_cast<UnderlyingType>(a) ^ static_cast<UnderlyingType>(b));    \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_OR_EQ(EnumType, Arg1Type)                                             \
+static inline EnumType& operator|=(EnumType& _this, const Arg1Type& val)                              \
+{                                                                                                     \
+    _this = static_cast<EnumType>(static_cast<int>(_this) | static_cast<int>(val));                   \
+    return _this;                                                                                     \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_AND_EQ(EnumType, Arg1Type)                                            \
+static inline EnumType& operator&=(EnumType& _this, const Arg1Type& val)                              \
+{                                                                                                     \
+    _this = static_cast<EnumType>(static_cast<int>(_this) & static_cast<int>(val));                   \
+    return _this;                                                                                     \
+}                                                                                                     \
+
+#define __CV_ENUM_FLAGS_BITWISE_XOR_EQ(EnumType, Arg1Type)                                            \
+static inline EnumType& operator^=(EnumType& _this, const Arg1Type& val)                              \
+{                                                                                                     \
+    _this = static_cast<EnumType>(static_cast<int>(_this) ^ static_cast<int>(val));                   \
+    return _this;                                                                                     \
+}                                                                                                     \
+
+#define CV_ENUM_CLASS_EXPOSE(EnumType, ...)                                                           \
+__CV_EXPAND(__CV_CAT(__CV_ENUM_CLASS_EXPOSE_, __CV_VA_NUM_ARGS(__VA_ARGS__))(EnumType, __VA_ARGS__)); \
+
+#define CV_ENUM_FLAGS(EnumType)                                                                       \
+__CV_ENUM_FLAGS_LOGICAL_NOT      (EnumType);                                                          \
+__CV_ENUM_FLAGS_LOGICAL_EQ       (EnumType, int);                                                     \
+__CV_ENUM_FLAGS_LOGICAL_NOT_EQ   (EnumType, int);                                                     \
+                                                                                                      \
+__CV_ENUM_FLAGS_BITWISE_NOT      (EnumType);                                                          \
+__CV_ENUM_FLAGS_BITWISE_OR       (EnumType, EnumType, EnumType);                                      \
+__CV_ENUM_FLAGS_BITWISE_AND      (EnumType, EnumType, EnumType);                                      \
+__CV_ENUM_FLAGS_BITWISE_XOR      (EnumType, EnumType, EnumType);                                      \
+                                                                                                      \
+__CV_ENUM_FLAGS_BITWISE_OR_EQ    (EnumType, EnumType);                                                \
+__CV_ENUM_FLAGS_BITWISE_AND_EQ   (EnumType, EnumType);                                                \
+__CV_ENUM_FLAGS_BITWISE_XOR_EQ   (EnumType, EnumType);                                                \
+
 /****************************************************************************************\
 *                                    static analysys                                     *
 \****************************************************************************************/
diff --git a/modules/core/include/opencv2/core/mat.hpp b/modules/core/include/opencv2/core/mat.hpp
index 2efcf17b6c..178ecd4938 100644
--- a/modules/core/include/opencv2/core/mat.hpp
+++ b/modules/core/include/opencv2/core/mat.hpp
@@ -61,8 +61,10 @@ namespace cv
 //! @addtogroup core_basic
 //! @{
 
-enum { ACCESS_READ=1<<24, ACCESS_WRITE=1<<25,
+enum AccessFlag { ACCESS_READ=1<<24, ACCESS_WRITE=1<<25,
     ACCESS_RW=3<<24, ACCESS_MASK=ACCESS_RW, ACCESS_FAST=1<<26 };
+CV_ENUM_FLAGS(AccessFlag);
+__CV_ENUM_FLAGS_BITWISE_AND(AccessFlag, int, AccessFlag);
 
 CV__DEBUG_NS_BEGIN
 
@@ -156,7 +158,7 @@ Custom type is wrapped as Mat-compatible `CV_8UC<N>` values (N = sizeof(T), N <=
 class CV_EXPORTS _InputArray
 {
 public:
-    enum {
+    enum KindFlag {
         KIND_SHIFT = 16,
         FIXED_TYPE = 0x8000 << KIND_SHIFT,
         FIXED_SIZE = 0x4000 << KIND_SHIFT,
@@ -221,7 +223,7 @@ public:
     void* getObj() const;
     Size getSz() const;
 
-    int kind() const;
+    _InputArray::KindFlag kind() const;
     int dims(int i=-1) const;
     int cols(int i=-1) const;
     int rows(int i=-1) const;
@@ -257,7 +259,8 @@ protected:
     void init(int _flags, const void* _obj);
     void init(int _flags, const void* _obj, Size _sz);
 };
-
+CV_ENUM_FLAGS(_InputArray::KindFlag);
+__CV_ENUM_FLAGS_BITWISE_AND(_InputArray::KindFlag, int, _InputArray::KindFlag);
 
 /** @brief This type is very similar to InputArray except that it is used for input/output and output function
 parameters.
@@ -287,7 +290,7 @@ generators:
 class CV_EXPORTS _OutputArray : public _InputArray
 {
 public:
-    enum
+    enum DepthMask
     {
         DEPTH_MASK_8U = 1 << CV_8U,
         DEPTH_MASK_8S = 1 << CV_8S,
@@ -356,9 +359,9 @@ public:
     std::vector<cuda::GpuMat>& getGpuMatVecRef() const;
     ogl::Buffer& getOGlBufferRef() const;
     cuda::HostMem& getHostMemRef() const;
-    void create(Size sz, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const;
-    void create(int rows, int cols, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const;
-    void create(int dims, const int* size, int type, int i=-1, bool allowTransposed=false, int fixedDepthMask=0) const;
+    void create(Size sz, int type, int i=-1, bool allowTransposed=false, _OutputArray::DepthMask fixedDepthMask=static_cast<_OutputArray::DepthMask>(0)) const;
+    void create(int rows, int cols, int type, int i=-1, bool allowTransposed=false, _OutputArray::DepthMask fixedDepthMask=static_cast<_OutputArray::DepthMask>(0)) const;
+    void create(int dims, const int* size, int type, int i=-1, bool allowTransposed=false, _OutputArray::DepthMask fixedDepthMask=static_cast<_OutputArray::DepthMask>(0)) const;
     void createSameSize(const _InputArray& arr, int mtype) const;
     void release() const;
     void clear() const;
@@ -467,10 +470,10 @@ public:
     //                      uchar*& datastart, uchar*& data, size_t* step) = 0;
     //virtual void deallocate(int* refcount, uchar* datastart, uchar* data) = 0;
     virtual UMatData* allocate(int dims, const int* sizes, int type,
-                               void* data, size_t* step, int flags, UMatUsageFlags usageFlags) const = 0;
-    virtual bool allocate(UMatData* data, int accessflags, UMatUsageFlags usageFlags) const = 0;
+                               void* data, size_t* step, AccessFlag flags, UMatUsageFlags usageFlags) const = 0;
+    virtual bool allocate(UMatData* data, AccessFlag accessflags, UMatUsageFlags usageFlags) const = 0;
     virtual void deallocate(UMatData* data) const = 0;
-    virtual void map(UMatData* data, int accessflags) const;
+    virtual void map(UMatData* data, AccessFlag accessflags) const;
     virtual void unmap(UMatData* data) const;
     virtual void download(UMatData* data, void* dst, int dims, const size_t sz[],
                           const size_t srcofs[], const size_t srcstep[],
@@ -523,7 +526,7 @@ protected:
 // it should be explicitly initialized using init().
 struct CV_EXPORTS UMatData
 {
-    enum { COPY_ON_MAP=1, HOST_COPY_OBSOLETE=2,
+    enum MemoryFlag { COPY_ON_MAP=1, HOST_COPY_OBSOLETE=2,
         DEVICE_COPY_OBSOLETE=4, TEMP_UMAT=8, TEMP_COPIED_UMAT=24,
         USER_ALLOCATED=32, DEVICE_MEM_MAPPED=64,
         ASYNC_CLEANUP=128
@@ -553,13 +556,14 @@ struct CV_EXPORTS UMatData
     uchar* origdata;
     size_t size;
 
-    int flags;
+    UMatData::MemoryFlag flags;
     void* handle;
     void* userdata;
     int allocatorFlags_;
     int mapcount;
     UMatData* originalUMatData;
 };
+CV_ENUM_FLAGS(UMatData::MemoryFlag);
 
 
 struct CV_EXPORTS MatSize
@@ -1061,7 +1065,7 @@ public:
     Mat& operator = (const MatExpr& expr);
 
     //! retrieve UMat from Mat
-    UMat getUMat(int accessFlags, UMatUsageFlags usageFlags = USAGE_DEFAULT) const;
+    UMat getUMat(AccessFlag accessFlags, UMatUsageFlags usageFlags = USAGE_DEFAULT) const;
 
     /** @brief Creates a matrix header for the specified matrix row.
 
@@ -2420,7 +2424,7 @@ public:
     //! assignment operators
     UMat& operator = (const UMat& m);
 
-    Mat getMat(int flags) const;
+    Mat getMat(AccessFlag flags) const;
 
     //! returns a new matrix header for the specified row
     UMat row(int y) const;
@@ -2546,7 +2550,7 @@ public:
         The UMat instance should be kept alive during the use of the handle to prevent the buffer to be
         returned to the OpenCV buffer pool.
      */
-    void* handle(int accessFlags) const;
+    void* handle(AccessFlag accessFlags) const;
     void ndoffset(size_t* ofs) const;
 
     enum { MAGIC_VAL  = 0x42FF0000, AUTO_STEP = 0, CONTINUOUS_FLAG = CV_MAT_CONT_FLAG, SUBMATRIX_FLAG = CV_SUBMAT_FLAG };
diff --git a/modules/core/include/opencv2/core/mat.inl.hpp b/modules/core/include/opencv2/core/mat.inl.hpp
index d28a6251d7..0ef6405bb9 100644
--- a/modules/core/include/opencv2/core/mat.inl.hpp
+++ b/modules/core/include/opencv2/core/mat.inl.hpp
@@ -83,7 +83,7 @@ inline void* _InputArray::getObj() const { return obj; }
 inline int _InputArray::getFlags() const { return flags; }
 inline Size _InputArray::getSz() const { return sz; }
 
-inline _InputArray::_InputArray() { init(NONE, 0); }
+inline _InputArray::_InputArray() { init(0 + NONE, 0); }
 inline _InputArray::_InputArray(int _flags, void* _obj) { init(_flags, _obj); }
 inline _InputArray::_InputArray(const Mat& m) { init(MAT+ACCESS_READ, &m); }
 inline _InputArray::_InputArray(const std::vector<Mat>& vec) { init(STD_VECTOR_MAT+ACCESS_READ, &vec); }
@@ -185,12 +185,12 @@ inline bool _InputArray::isGpuMatVector() const { return kind() == _InputArray::
 
 ////////////////////////////////////////////////////////////////////////////////////////
 
-inline _OutputArray::_OutputArray() { init(ACCESS_WRITE, 0); }
-inline _OutputArray::_OutputArray(int _flags, void* _obj) { init(_flags|ACCESS_WRITE, _obj); }
+inline _OutputArray::_OutputArray() { init(NONE + ACCESS_WRITE, 0); }
+inline _OutputArray::_OutputArray(int _flags, void* _obj) { init(_flags + ACCESS_WRITE, _obj); }
 inline _OutputArray::_OutputArray(Mat& m) { init(MAT+ACCESS_WRITE, &m); }
-inline _OutputArray::_OutputArray(std::vector<Mat>& vec) { init(STD_VECTOR_MAT+ACCESS_WRITE, &vec); }
-inline _OutputArray::_OutputArray(UMat& m) { init(UMAT+ACCESS_WRITE, &m); }
-inline _OutputArray::_OutputArray(std::vector<UMat>& vec) { init(STD_VECTOR_UMAT+ACCESS_WRITE, &vec); }
+inline _OutputArray::_OutputArray(std::vector<Mat>& vec) { init(STD_VECTOR_MAT + ACCESS_WRITE, &vec); }
+inline _OutputArray::_OutputArray(UMat& m) { init(UMAT + ACCESS_WRITE, &m); }
+inline _OutputArray::_OutputArray(std::vector<UMat>& vec) { init(STD_VECTOR_UMAT + ACCESS_WRITE, &vec); }
 
 template<typename _Tp> inline
 _OutputArray::_OutputArray(std::vector<_Tp>& vec)
@@ -311,8 +311,8 @@ _OutputArray _OutputArray::rawOut(std::array<_Tp, _Nm>& arr)
 
 ///////////////////////////////////////////////////////////////////////////////////////////
 
-inline _InputOutputArray::_InputOutputArray() { init(ACCESS_RW, 0); }
-inline _InputOutputArray::_InputOutputArray(int _flags, void* _obj) { init(_flags|ACCESS_RW, _obj); }
+inline _InputOutputArray::_InputOutputArray() { init(0+ACCESS_RW, 0); }
+inline _InputOutputArray::_InputOutputArray(int _flags, void* _obj) { init(_flags+ACCESS_RW, _obj); }
 inline _InputOutputArray::_InputOutputArray(Mat& m) { init(MAT+ACCESS_RW, &m); }
 inline _InputOutputArray::_InputOutputArray(std::vector<Mat>& vec) { init(STD_VECTOR_MAT+ACCESS_RW, &vec); }
 inline _InputOutputArray::_InputOutputArray(UMat& m) { init(UMAT+ACCESS_RW, &m); }
@@ -600,7 +600,7 @@ Mat::Mat(Size _sz, int _type, void* _data, size_t _step)
 
 template<typename _Tp> inline
 Mat::Mat(const std::vector<_Tp>& vec, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows((int)vec.size()),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows((int)vec.size()),
       cols(1), data(0), datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if(vec.empty())
@@ -637,7 +637,7 @@ Mat::Mat(const std::initializer_list<int> sizes, const std::initializer_list<_Tp
 
 template<typename _Tp, std::size_t _Nm> inline
 Mat::Mat(const std::array<_Tp, _Nm>& arr, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows((int)arr.size()),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows((int)arr.size()),
       cols(1), data(0), datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if(arr.empty())
@@ -654,7 +654,7 @@ Mat::Mat(const std::array<_Tp, _Nm>& arr, bool copyData)
 
 template<typename _Tp, int n> inline
 Mat::Mat(const Vec<_Tp, n>& vec, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows(n), cols(1), data(0),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows(n), cols(1), data(0),
       datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if( !copyData )
@@ -670,7 +670,7 @@ Mat::Mat(const Vec<_Tp, n>& vec, bool copyData)
 
 template<typename _Tp, int m, int n> inline
 Mat::Mat(const Matx<_Tp,m,n>& M, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows(m), cols(n), data(0),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows(m), cols(n), data(0),
       datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if( !copyData )
@@ -686,7 +686,7 @@ Mat::Mat(const Matx<_Tp,m,n>& M, bool copyData)
 
 template<typename _Tp> inline
 Mat::Mat(const Point_<_Tp>& pt, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows(2), cols(1), data(0),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows(2), cols(1), data(0),
       datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if( !copyData )
@@ -705,7 +705,7 @@ Mat::Mat(const Point_<_Tp>& pt, bool copyData)
 
 template<typename _Tp> inline
 Mat::Mat(const Point3_<_Tp>& pt, bool copyData)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows(3), cols(1), data(0),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows(3), cols(1), data(0),
       datastart(0), dataend(0), datalimit(0), allocator(0), u(0), size(&rows), step(0)
 {
     if( !copyData )
@@ -725,7 +725,7 @@ Mat::Mat(const Point3_<_Tp>& pt, bool copyData)
 
 template<typename _Tp> inline
 Mat::Mat(const MatCommaInitializer_<_Tp>& commaInitializer)
-    : flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(0), rows(0), cols(0), data(0),
+    : flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(0), rows(0), cols(0), data(0),
       datastart(0), dataend(0), allocator(0), u(0), size(&rows)
 {
     *this = commaInitializer.operator Mat_<_Tp>();
@@ -1554,7 +1554,7 @@ template<typename _Tp> inline
 Mat_<_Tp>::Mat_()
     : Mat()
 {
-    flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
+    flags = (flags & ~CV_MAT_TYPE_MASK) + traits::Type<_Tp>::value;
 }
 
 template<typename _Tp> inline
@@ -1611,7 +1611,7 @@ template<typename _Tp> inline
 Mat_<_Tp>::Mat_(const Mat& m)
     : Mat()
 {
-    flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
+    flags = (flags & ~CV_MAT_TYPE_MASK) + traits::Type<_Tp>::value;
     *this = m;
 }
 
@@ -1751,7 +1751,7 @@ void Mat_<_Tp>::release()
 {
     Mat::release();
 #ifdef _DEBUG
-    flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
+    flags = (flags & ~CV_MAT_TYPE_MASK) + traits::Type<_Tp>::value;
 #endif
 }
 
@@ -2069,7 +2069,7 @@ template<typename _Tp> inline
 Mat_<_Tp>::Mat_(Mat&& m)
     : Mat()
 {
-    flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
+    flags = (flags & ~CV_MAT_TYPE_MASK) + traits::Type<_Tp>::value;
     *this = m;
 }
 
@@ -2095,7 +2095,7 @@ template<typename _Tp> inline
 Mat_<_Tp>::Mat_(MatExpr&& e)
     : Mat()
 {
-    flags = (flags & ~CV_MAT_TYPE_MASK) | traits::Type<_Tp>::value;
+    flags = (flags & ~CV_MAT_TYPE_MASK) + traits::Type<_Tp>::value;
     *this = Mat(e);
 }
 
@@ -2431,7 +2431,7 @@ SparseMatConstIterator_<_Tp> SparseMat::end() const
 template<typename _Tp> inline
 SparseMat_<_Tp>::SparseMat_()
 {
-    flags = MAGIC_VAL | traits::Type<_Tp>::value;
+    flags = MAGIC_VAL + traits::Type<_Tp>::value;
 }
 
 template<typename _Tp> inline
@@ -3654,7 +3654,7 @@ UMat::UMat(const UMat& m)
 
 template<typename _Tp> inline
 UMat::UMat(const std::vector<_Tp>& vec, bool copyData)
-: flags(MAGIC_VAL | traits::Type<_Tp>::value | CV_MAT_CONT_FLAG), dims(2), rows((int)vec.size()),
+: flags(MAGIC_VAL + traits::Type<_Tp>::value + CV_MAT_CONT_FLAG), dims(2), rows((int)vec.size()),
 cols(1), allocator(0), usageFlags(USAGE_DEFAULT), u(0), offset(0), size(&rows)
 {
     if(vec.empty())
diff --git a/modules/core/include/opencv2/core/opengl.hpp b/modules/core/include/opencv2/core/opengl.hpp
index 5e88cb8ce4..ddc0db6943 100644
--- a/modules/core/include/opencv2/core/opengl.hpp
+++ b/modules/core/include/opencv2/core/opengl.hpp
@@ -548,7 +548,7 @@ calling unmapGLBuffer() function.
 @param accessFlags - data access flags (ACCESS_READ|ACCESS_WRITE).
 @return Returns UMat object
  */
-CV_EXPORTS UMat mapGLBuffer(const Buffer& buffer, int accessFlags = ACCESS_READ|ACCESS_WRITE);
+CV_EXPORTS UMat mapGLBuffer(const Buffer& buffer, AccessFlag accessFlags = ACCESS_READ | ACCESS_WRITE);
 
 /** @brief Unmaps Buffer object (releases UMat, previously mapped from Buffer).
 
diff --git a/modules/core/include/opencv2/core/operations.hpp b/modules/core/include/opencv2/core/operations.hpp
index d706d9664e..0d28b6c944 100644
--- a/modules/core/include/opencv2/core/operations.hpp
+++ b/modules/core/include/opencv2/core/operations.hpp
@@ -392,7 +392,7 @@ CV_EXPORTS String format( const char* fmt, ... );
 ///////////////////////////////// Formatted output of cv::Mat /////////////////////////////////
 
 static inline
-Ptr<Formatted> format(InputArray mtx, int fmt)
+Ptr<Formatted> format(InputArray mtx, Formatter::FormatType fmt)
 {
     return Formatter::get(fmt)->format(mtx.getMat());
 }
diff --git a/modules/core/include/opencv2/core/persistence.hpp b/modules/core/include/opencv2/core/persistence.hpp
index 22e611ea36..948b568ca1 100644
--- a/modules/core/include/opencv2/core/persistence.hpp
+++ b/modules/core/include/opencv2/core/persistence.hpp
@@ -1049,6 +1049,12 @@ void write(FileStorage& fs, const String& name, const DMatch& m)
     write(fs, m.distance);
 }
 
+template<typename _Tp, typename std::enable_if< std::is_enum<_Tp>::value >::type* = nullptr>
+static inline void write( FileStorage& fs, const String& name, const _Tp& val )
+{
+    write(fs, name, static_cast<int>(val));
+}
+
 template<typename _Tp> static inline
 void write( FileStorage& fs, const String& name, const std::vector<_Tp>& vec )
 {
@@ -1137,6 +1143,14 @@ void read( FileNodeIterator& it, std::vector<_Tp>& vec, size_t maxCount = (size_
     r(vec, maxCount);
 }
 
+template<typename _Tp, typename std::enable_if< std::is_enum<_Tp>::value >::type* = nullptr>
+static inline void read(const FileNode& node, _Tp& value, const _Tp& default_value = static_cast<_Tp>(0))
+{
+    int temp;
+    read(node, temp, static_cast<int>(default_value));
+    value = static_cast<_Tp>(temp);
+}
+
 template<typename _Tp> static inline
 void read( const FileNode& node, std::vector<_Tp>& vec, const std::vector<_Tp>& default_value = std::vector<_Tp>() )
 {
diff --git a/modules/core/include/opencv2/core/utility.hpp b/modules/core/include/opencv2/core/utility.hpp
index 03f5d44ecb..4174de8f5d 100644
--- a/modules/core/include/opencv2/core/utility.hpp
+++ b/modules/core/include/opencv2/core/utility.hpp
@@ -943,8 +943,8 @@ public:
     void printErrors() const;
 
 protected:
-    void getByName(const String& name, bool space_delete, int type, void* dst) const;
-    void getByIndex(int index, bool space_delete, int type, void* dst) const;
+    void getByName(const String& name, bool space_delete, Param type, void* dst) const;
+    void getByIndex(int index, bool space_delete, Param type, void* dst) const;
 
     struct Impl;
     Impl* impl;
diff --git a/modules/core/misc/python/pyopencv_umat.hpp b/modules/core/misc/python/pyopencv_umat.hpp
index b49b71b10c..003dce04fc 100644
--- a/modules/core/misc/python/pyopencv_umat.hpp
+++ b/modules/core/misc/python/pyopencv_umat.hpp
@@ -7,6 +7,8 @@ typedef std::vector<Range> vector_Range;
 CV_PY_TO_CLASS(UMat);
 CV_PY_FROM_CLASS(UMat);
 CV_PY_TO_ENUM(UMatUsageFlags);
+CV_PY_FROM_ENUM(AccessFlag);
+CV_PY_TO_ENUM(AccessFlag);
 
 static bool cv_mappable_to(const Ptr<Mat>& src, Ptr<UMat>& dst)
 {
diff --git a/modules/core/misc/python/shadow_umat.hpp b/modules/core/misc/python/shadow_umat.hpp
index 107aedb928..39ffef1d47 100644
--- a/modules/core/misc/python/shadow_umat.hpp
+++ b/modules/core/misc/python/shadow_umat.hpp
@@ -50,7 +50,7 @@ public:
     The UMat instance should be kept alive during the use of the handle to prevent the buffer to be
     returned to the OpenCV buffer pool.
     */
-    CV_WRAP void* handle(int accessFlags) const;
+    CV_WRAP void* handle(AccessFlag accessFlags) const;
 
     // offset of the submatrix (or 0)
     CV_PROP_RW size_t offset;
diff --git a/modules/core/src/arithm.cpp b/modules/core/src/arithm.cpp
index dcebf6c1e4..ce943e0ffb 100644
--- a/modules/core/src/arithm.cpp
+++ b/modules/core/src/arithm.cpp
@@ -167,7 +167,7 @@ static void binary_op( InputArray _src1, InputArray _src2, OutputArray _dst,
                        bool bitwise, int oclop )
 {
     const _InputArray *psrc1 = &_src1, *psrc2 = &_src2;
-    int kind1 = psrc1->kind(), kind2 = psrc2->kind();
+    _InputArray::KindFlag kind1 = psrc1->kind(), kind2 = psrc2->kind();
     int type1 = psrc1->type(), depth1 = CV_MAT_DEPTH(type1), cn = CV_MAT_CN(type1);
     int type2 = psrc2->type(), depth2 = CV_MAT_DEPTH(type2), cn2 = CV_MAT_CN(type2);
     int dims1 = psrc1->dims(), dims2 = psrc2->dims();
@@ -600,7 +600,7 @@ static void arithm_op(InputArray _src1, InputArray _src2, OutputArray _dst,
                       void* usrdata=0, int oclop=-1 )
 {
     const _InputArray *psrc1 = &_src1, *psrc2 = &_src2;
-    int kind1 = psrc1->kind(), kind2 = psrc2->kind();
+    _InputArray::KindFlag kind1 = psrc1->kind(), kind2 = psrc2->kind();
     bool haveMask = !_mask.empty();
     bool reallocate = false;
     int type1 = psrc1->type(), depth1 = CV_MAT_DEPTH(type1), cn = CV_MAT_CN(type1);
@@ -1214,7 +1214,7 @@ void cv::compare(InputArray _src1, InputArray _src2, OutputArray _dst, int op)
     CV_OCL_RUN(_src1.dims() <= 2 && _src2.dims() <= 2 && OCL_PERFORMANCE_CHECK(_dst.isUMat()),
                ocl_compare(_src1, _src2, _dst, op, haveScalar))
 
-    int kind1 = _src1.kind(), kind2 = _src2.kind();
+    _InputArray::KindFlag kind1 = _src1.kind(), kind2 = _src2.kind();
     Mat src1 = _src1.getMat(), src2 = _src2.getMat();
 
     if( kind1 == kind2 && src1.dims <= 2 && src2.dims <= 2 && src1.size() == src2.size() && src1.type() == src2.type() )
@@ -1587,7 +1587,7 @@ static bool ocl_inRange( InputArray _src, InputArray _lowerb,
                          InputArray _upperb, OutputArray _dst )
 {
     const ocl::Device & d = ocl::Device::getDefault();
-    int skind = _src.kind(), lkind = _lowerb.kind(), ukind = _upperb.kind();
+    _InputArray::KindFlag skind = _src.kind(), lkind = _lowerb.kind(), ukind = _upperb.kind();
     Size ssize = _src.size(), lsize = _lowerb.size(), usize = _upperb.size();
     int stype = _src.type(), ltype = _lowerb.type(), utype = _upperb.type();
     int sdepth = CV_MAT_DEPTH(stype), ldepth = CV_MAT_DEPTH(ltype), udepth = CV_MAT_DEPTH(utype);
@@ -1712,7 +1712,7 @@ void cv::inRange(InputArray _src, InputArray _lowerb,
                _upperb.dims() <= 2 && OCL_PERFORMANCE_CHECK(_dst.isUMat()),
                ocl_inRange(_src, _lowerb, _upperb, _dst))
 
-    int skind = _src.kind(), lkind = _lowerb.kind(), ukind = _upperb.kind();
+    _InputArray::KindFlag skind = _src.kind(), lkind = _lowerb.kind(), ukind = _upperb.kind();
     Mat src = _src.getMat(), lb = _lowerb.getMat(), ub = _upperb.getMat();
 
     bool lbScalar = false, ubScalar = false;
diff --git a/modules/core/src/command_line_parser.cpp b/modules/core/src/command_line_parser.cpp
index 6ef24d2cd0..3d55404e37 100644
--- a/modules/core/src/command_line_parser.cpp
+++ b/modules/core/src/command_line_parser.cpp
@@ -53,7 +53,7 @@ struct CommandLineParser::Impl
 };
 
 
-static const char* get_type_name(int type)
+static const char* get_type_name(Param type)
 {
     if( type == Param::INT )
         return "int";
@@ -81,7 +81,7 @@ static bool parse_bool(std::string str)
     return b;
 }
 
-static void from_str(const String& str, int type, void* dst)
+static void from_str(const String& str, Param type, void* dst)
 {
     std::stringstream ss(str.c_str());
     if( type == Param::INT )
@@ -117,7 +117,7 @@ static void from_str(const String& str, int type, void* dst)
     }
 }
 
-void CommandLineParser::getByName(const String& name, bool space_delete, int type, void* dst) const
+void CommandLineParser::getByName(const String& name, bool space_delete, Param type, void* dst) const
 {
     CV_TRY
     {
@@ -154,7 +154,7 @@ void CommandLineParser::getByName(const String& name, bool space_delete, int typ
 }
 
 
-void CommandLineParser::getByIndex(int index, bool space_delete, int type, void* dst) const
+void CommandLineParser::getByIndex(int index, bool space_delete, Param type, void* dst) const
 {
     CV_TRY
     {
diff --git a/modules/core/src/cuda_host_mem.cpp b/modules/core/src/cuda_host_mem.cpp
index 6a79320d7c..0c120f82f9 100644
--- a/modules/core/src/cuda_host_mem.cpp
+++ b/modules/core/src/cuda_host_mem.cpp
@@ -60,7 +60,7 @@ public:
 
     UMatData* allocate(int dims, const int* sizes, int type,
                        void* data0, size_t* step,
-                       int /*flags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
+                       AccessFlag /*flags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
     {
         size_t total = CV_ELEM_SIZE(type);
         for (int i = dims-1; i >= 0; i--)
@@ -100,7 +100,7 @@ public:
         return u;
     }
 
-    bool allocate(UMatData* u, int /*accessFlags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
+    bool allocate(UMatData* u, AccessFlag /*accessFlags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
     {
         return (u != NULL);
     }
diff --git a/modules/core/src/matrix.cpp b/modules/core/src/matrix.cpp
index 5edf252c87..a353eee8c4 100644
--- a/modules/core/src/matrix.cpp
+++ b/modules/core/src/matrix.cpp
@@ -7,7 +7,7 @@
 
 namespace cv {
 
-void MatAllocator::map(UMatData*, int) const
+void MatAllocator::map(UMatData*, AccessFlag) const
 {
 }
 
@@ -127,7 +127,7 @@ class StdMatAllocator CV_FINAL : public MatAllocator
 {
 public:
     UMatData* allocate(int dims, const int* sizes, int type,
-                       void* data0, size_t* step, int /*flags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
+                       void* data0, size_t* step, AccessFlag /*flags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
     {
         size_t total = CV_ELEM_SIZE(type);
         for( int i = dims-1; i >= 0; i-- )
@@ -154,7 +154,7 @@ public:
         return u;
     }
 
-    bool allocate(UMatData* u, int /*accessFlags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
+    bool allocate(UMatData* u, AccessFlag /*accessFlags*/, UMatUsageFlags /*usageFlags*/) const CV_OVERRIDE
     {
         if(!u) return false;
         return true;
@@ -357,13 +357,13 @@ void Mat::create(int d, const int* _sizes, int _type)
             a = a0;
         CV_TRY
         {
-            u = a->allocate(dims, size, _type, 0, step.p, 0, USAGE_DEFAULT);
+            u = a->allocate(dims, size, _type, 0, step.p, ACCESS_RW /* ignored */, USAGE_DEFAULT);
             CV_Assert(u != 0);
         }
         CV_CATCH_ALL
         {
             if(a != a0)
-                u = a0->allocate(dims, size, _type, 0, step.p, 0, USAGE_DEFAULT);
+                u = a0->allocate(dims, size, _type, 0, step.p, ACCESS_RW /* ignored */, USAGE_DEFAULT);
             CV_Assert(u != 0);
         }
         CV_Assert( step[dims-1] == (size_t)CV_ELEM_SIZE(flags) );
diff --git a/modules/core/src/matrix_wrap.cpp b/modules/core/src/matrix_wrap.cpp
index e64d097aad..5ee7ab3696 100644
--- a/modules/core/src/matrix_wrap.cpp
+++ b/modules/core/src/matrix_wrap.cpp
@@ -14,8 +14,8 @@ namespace cv {
 
 Mat _InputArray::getMat_(int i) const
 {
-    int k = kind();
-    int accessFlags = flags & ACCESS_MASK;
+    _InputArray::KindFlag k = kind();
+    AccessFlag accessFlags = flags & ACCESS_MASK;
 
     if( k == MAT )
     {
@@ -132,8 +132,8 @@ Mat _InputArray::getMat_(int i) const
 
 UMat _InputArray::getUMat(int i) const
 {
-    int k = kind();
-    int accessFlags = flags & ACCESS_MASK;
+    _InputArray::KindFlag k = kind();
+    AccessFlag accessFlags = flags & ACCESS_MASK;
 
     if( k == UMAT )
     {
@@ -164,8 +164,8 @@ UMat _InputArray::getUMat(int i) const
 
 void _InputArray::getMatVector(std::vector<Mat>& mv) const
 {
-    int k = kind();
-    int accessFlags = flags & ACCESS_MASK;
+    _InputArray::KindFlag k = kind();
+    AccessFlag accessFlags = flags & ACCESS_MASK;
 
     if( k == MAT )
     {
@@ -272,8 +272,8 @@ void _InputArray::getMatVector(std::vector<Mat>& mv) const
 
 void _InputArray::getUMatVector(std::vector<UMat>& umv) const
 {
-    int k = kind();
-    int accessFlags = flags & ACCESS_MASK;
+    _InputArray::KindFlag k = kind();
+    AccessFlag accessFlags = flags & ACCESS_MASK;
 
     if( k == NONE )
     {
@@ -334,7 +334,7 @@ void _InputArray::getUMatVector(std::vector<UMat>& umv) const
 
 cuda::GpuMat _InputArray::getGpuMat() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if (k == CUDA_GPU_MAT)
     {
@@ -360,7 +360,7 @@ cuda::GpuMat _InputArray::getGpuMat() const
 }
 void _InputArray::getGpuMatVector(std::vector<cuda::GpuMat>& gpumv) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if (k == STD_VECTOR_CUDA_GPU_MAT)
     {
         gpumv = *(std::vector<cuda::GpuMat>*)obj;
@@ -368,7 +368,7 @@ void _InputArray::getGpuMatVector(std::vector<cuda::GpuMat>& gpumv) const
 }
 ogl::Buffer _InputArray::getOGlBuffer() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     CV_Assert(k == OPENGL_BUFFER);
 
@@ -376,7 +376,7 @@ ogl::Buffer _InputArray::getOGlBuffer() const
     return *gl_buf;
 }
 
-int _InputArray::kind() const
+_InputArray::KindFlag _InputArray::kind() const
 {
     return flags & KIND_MASK;
 }
@@ -393,7 +393,7 @@ int _InputArray::cols(int i) const
 
 Size _InputArray::size(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -515,7 +515,8 @@ Size _InputArray::size(int i) const
 
 int _InputArray::sizend(int* arrsz, int i) const
 {
-    int j, d=0, k = kind();
+    int j, d = 0;
+    _InputArray::KindFlag k = kind();
 
     if( k == NONE )
         ;
@@ -583,7 +584,7 @@ int _InputArray::sizend(int* arrsz, int i) const
 
 bool _InputArray::sameSize(const _InputArray& arr) const
 {
-    int k1 = kind(), k2 = arr.kind();
+    _InputArray::KindFlag k1 = kind(), k2 = arr.kind();
     Size sz1;
 
     if( k1 == MAT )
@@ -617,7 +618,7 @@ bool _InputArray::sameSize(const _InputArray& arr) const
 
 int _InputArray::dims(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -714,7 +715,7 @@ int _InputArray::dims(int i) const
 
 size_t _InputArray::total(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -763,7 +764,7 @@ size_t _InputArray::total(int i) const
 
 int _InputArray::type(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
         return ((const Mat*)obj)->type();
@@ -852,7 +853,7 @@ int _InputArray::channels(int i) const
 
 bool _InputArray::empty() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
         return ((const Mat*)obj)->empty();
@@ -924,7 +925,7 @@ bool _InputArray::empty() const
 
 bool _InputArray::isContinuous(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
         return i < 0 ? ((const Mat*)obj)->isContinuous() : true;
@@ -965,7 +966,7 @@ bool _InputArray::isContinuous(int i) const
 
 bool _InputArray::isSubmatrix(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
         return i < 0 ? ((const Mat*)obj)->isSubmatrix() : false;
@@ -1003,7 +1004,7 @@ bool _InputArray::isSubmatrix(int i) const
 
 size_t _InputArray::offset(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -1067,7 +1068,7 @@ size_t _InputArray::offset(int i) const
 
 size_t _InputArray::step(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -1127,7 +1128,7 @@ size_t _InputArray::step(int i) const
 
 void _InputArray::copyTo(const _OutputArray& arr) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == NONE )
         arr.release();
@@ -1156,7 +1157,7 @@ void _InputArray::copyTo(const _OutputArray& arr) const
 
 void _InputArray::copyTo(const _OutputArray& arr, const _InputArray & mask) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == NONE )
         arr.release();
@@ -1185,9 +1186,9 @@ bool _OutputArray::fixedType() const
     return (flags & FIXED_TYPE) == FIXED_TYPE;
 }
 
-void _OutputArray::create(Size _sz, int mtype, int i, bool allowTransposed, int fixedDepthMask) const
+void _OutputArray::create(Size _sz, int mtype, int i, bool allowTransposed, _OutputArray::DepthMask fixedDepthMask) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if( k == MAT && i < 0 && !allowTransposed && fixedDepthMask == 0 )
     {
         CV_Assert(!fixedSize() || ((Mat*)obj)->size.operator()() == _sz);
@@ -1227,9 +1228,9 @@ void _OutputArray::create(Size _sz, int mtype, int i, bool allowTransposed, int
     create(2, sizes, mtype, i, allowTransposed, fixedDepthMask);
 }
 
-void _OutputArray::create(int _rows, int _cols, int mtype, int i, bool allowTransposed, int fixedDepthMask) const
+void _OutputArray::create(int _rows, int _cols, int mtype, int i, bool allowTransposed, _OutputArray::DepthMask fixedDepthMask) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if( k == MAT && i < 0 && !allowTransposed && fixedDepthMask == 0 )
     {
         CV_Assert(!fixedSize() || ((Mat*)obj)->size.operator()() == Size(_cols, _rows));
@@ -1270,7 +1271,7 @@ void _OutputArray::create(int _rows, int _cols, int mtype, int i, bool allowTran
 }
 
 void _OutputArray::create(int d, const int* sizes, int mtype, int i,
-                          bool allowTransposed, int fixedDepthMask) const
+                          bool allowTransposed, _OutputArray::DepthMask fixedDepthMask) const
 {
     int sizebuf[2];
     if(d == 1)
@@ -1280,7 +1281,7 @@ void _OutputArray::create(int d, const int* sizes, int mtype, int i,
         sizebuf[1] = 1;
         sizes = sizebuf;
     }
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     mtype = CV_MAT_TYPE(mtype);
 
     if( k == MAT )
@@ -1667,7 +1668,7 @@ void _OutputArray::release() const
 {
     CV_Assert(!fixedSize());
 
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -1735,7 +1736,7 @@ void _OutputArray::release() const
 
 void _OutputArray::clear() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == MAT )
     {
@@ -1754,7 +1755,7 @@ bool _OutputArray::needed() const
 
 Mat& _OutputArray::getMatRef(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if( i < 0 )
     {
         CV_Assert( k == MAT );
@@ -1779,7 +1780,7 @@ Mat& _OutputArray::getMatRef(int i) const
 
 UMat& _OutputArray::getUMatRef(int i) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if( i < 0 )
     {
         CV_Assert( k == UMAT );
@@ -1796,34 +1797,34 @@ UMat& _OutputArray::getUMatRef(int i) const
 
 cuda::GpuMat& _OutputArray::getGpuMatRef() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     CV_Assert( k == CUDA_GPU_MAT );
     return *(cuda::GpuMat*)obj;
 }
 std::vector<cuda::GpuMat>& _OutputArray::getGpuMatVecRef() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     CV_Assert(k == STD_VECTOR_CUDA_GPU_MAT);
     return *(std::vector<cuda::GpuMat>*)obj;
 }
 
 ogl::Buffer& _OutputArray::getOGlBufferRef() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     CV_Assert( k == OPENGL_BUFFER );
     return *(ogl::Buffer*)obj;
 }
 
 cuda::HostMem& _OutputArray::getHostMemRef() const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     CV_Assert( k == CUDA_HOST_MEM );
     return *(cuda::HostMem*)obj;
 }
 
 void _OutputArray::setTo(const _InputArray& arr, const _InputArray & mask) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
 
     if( k == NONE )
         ;
@@ -1847,7 +1848,7 @@ void _OutputArray::setTo(const _InputArray& arr, const _InputArray & mask) const
 
 void _OutputArray::assign(const UMat& u) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if (k == UMAT)
     {
         *(UMat*)obj = u;
@@ -1869,7 +1870,7 @@ void _OutputArray::assign(const UMat& u) const
 
 void _OutputArray::assign(const Mat& m) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if (k == UMAT)
     {
         m.copyTo(*(UMat*)obj); // TODO check m.getUMat()
@@ -1891,7 +1892,7 @@ void _OutputArray::assign(const Mat& m) const
 
 void _OutputArray::assign(const std::vector<UMat>& v) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if (k == STD_VECTOR_UMAT)
     {
         std::vector<UMat>& this_v = *(std::vector<UMat>*)obj;
@@ -1929,7 +1930,7 @@ void _OutputArray::assign(const std::vector<UMat>& v) const
 
 void _OutputArray::assign(const std::vector<Mat>& v) const
 {
-    int k = kind();
+    _InputArray::KindFlag k = kind();
     if (k == STD_VECTOR_UMAT)
     {
         std::vector<UMat>& this_v = *(std::vector<UMat>*)obj;
diff --git a/modules/core/src/ocl.cpp b/modules/core/src/ocl.cpp
index 9bf02a1bb6..50dd13b533 100644
--- a/modules/core/src/ocl.cpp
+++ b/modules/core/src/ocl.cpp
@@ -2972,8 +2972,8 @@ int Kernel::set(int i, const KernelArg& arg)
     cl_int status = 0;
     if( arg.m )
     {
-        int accessFlags = ((arg.flags & KernelArg::READ_ONLY) ? ACCESS_READ : 0) +
-                          ((arg.flags & KernelArg::WRITE_ONLY) ? ACCESS_WRITE : 0);
+        AccessFlag accessFlags = ((arg.flags & KernelArg::READ_ONLY) ? ACCESS_READ : static_cast<AccessFlag>(0)) |
+                                 ((arg.flags & KernelArg::WRITE_ONLY) ? ACCESS_WRITE : static_cast<AccessFlag>(0));
         bool ptronly = (arg.flags & KernelArg::PTR_ONLY) != 0;
         cl_mem h = (cl_mem)arg.m->handle(accessFlags);
 
@@ -3050,7 +3050,7 @@ int Kernel::set(int i, const KernelArg& arg)
                 i += 3;
             }
         }
-        p->addUMat(*arg.m, (accessFlags & ACCESS_WRITE) != 0);
+        p->addUMat(*arg.m, !!(accessFlags & ACCESS_WRITE));
         return i;
     }
     status = clSetKernelArg(p->handle, (cl_uint)i, arg.sz, arg.obj);
@@ -4516,13 +4516,13 @@ public:
     }
 
     UMatData* defaultAllocate(int dims, const int* sizes, int type, void* data, size_t* step,
-            int flags, UMatUsageFlags usageFlags) const
+            AccessFlag flags, UMatUsageFlags usageFlags) const
     {
         UMatData* u = matStdAllocator->allocate(dims, sizes, type, data, step, flags, usageFlags);
         return u;
     }
 
-    void getBestFlags(const Context& ctx, int /*flags*/, UMatUsageFlags usageFlags, int& createFlags, int& flags0) const
+    void getBestFlags(const Context& ctx, AccessFlag /*flags*/, UMatUsageFlags usageFlags, int& createFlags, UMatData::MemoryFlag& flags0) const
     {
         const Device& dev = ctx.device(0);
         createFlags = 0;
@@ -4530,13 +4530,13 @@ public:
             createFlags |= CL_MEM_ALLOC_HOST_PTR;
 
         if( dev.hostUnifiedMemory() )
-            flags0 = 0;
+            flags0 = static_cast<UMatData::MemoryFlag>(0);
         else
             flags0 = UMatData::COPY_ON_MAP;
     }
 
     UMatData* allocate(int dims, const int* sizes, int type,
-                       void* data, size_t* step, int flags, UMatUsageFlags usageFlags) const CV_OVERRIDE
+                       void* data, size_t* step, AccessFlag flags, UMatUsageFlags usageFlags) const CV_OVERRIDE
     {
         if(!useOpenCL())
             return defaultAllocate(dims, sizes, type, data, step, flags, usageFlags);
@@ -4552,7 +4552,8 @@ public:
         Context& ctx = Context::getDefault();
         flushCleanupQueue();
 
-        int createFlags = 0, flags0 = 0;
+        int createFlags = 0;
+        UMatData::MemoryFlag flags0 = static_cast<UMatData::MemoryFlag>(0);
         getBestFlags(ctx, flags, usageFlags, createFlags, flags0);
 
         void* handle = NULL;
@@ -4600,7 +4601,7 @@ public:
         return u;
     }
 
-    bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const CV_OVERRIDE
+    bool allocate(UMatData* u, AccessFlag accessFlags, UMatUsageFlags usageFlags) const CV_OVERRIDE
     {
         if(!u)
             return false;
@@ -4613,12 +4614,13 @@ public:
         {
             CV_Assert(u->origdata != 0);
             Context& ctx = Context::getDefault();
-            int createFlags = 0, flags0 = 0;
+            int createFlags = 0;
+            UMatData::MemoryFlag flags0 = static_cast<UMatData::MemoryFlag>(0);
             getBestFlags(ctx, accessFlags, usageFlags, createFlags, flags0);
 
             cl_context ctx_handle = (cl_context)ctx.ptr();
             int allocatorFlags = 0;
-            int tempUMatFlags = 0;
+            UMatData::MemoryFlag tempUMatFlags = static_cast<UMatData::MemoryFlag>(0);
             void* handle = NULL;
             cl_int retval = CL_SUCCESS;
 
@@ -4703,7 +4705,7 @@ public:
             u->flags |= tempUMatFlags;
             u->allocatorFlags_ = allocatorFlags;
         }
-        if(accessFlags & ACCESS_WRITE)
+        if (!!(accessFlags & ACCESS_WRITE))
             u->markHostCopyObsolete(true);
         return true;
     }
@@ -4749,7 +4751,7 @@ public:
         CV_Assert(u->handle != 0);
         CV_Assert(u->mapcount == 0);
 
-        if (u->flags & UMatData::ASYNC_CLEANUP)
+        if (!!(u->flags & UMatData::ASYNC_CLEANUP))
             addToCleanupQueue(u);
         else
             deallocate_(u);
@@ -4924,11 +4926,11 @@ public:
     }
 
     // synchronized call (external UMatDataAutoLock, see UMat::getMat)
-    void map(UMatData* u, int accessFlags) const CV_OVERRIDE
+    void map(UMatData* u, AccessFlag accessFlags) const CV_OVERRIDE
     {
         CV_Assert(u && u->handle);
 
-        if(accessFlags & ACCESS_WRITE)
+        if (!!(accessFlags & ACCESS_WRITE))
             u->markDeviceCopyObsolete(true);
 
         cl_command_queue q = (cl_command_queue)Queue::getDefault().ptr();
@@ -4995,7 +4997,7 @@ public:
             }
         }
 
-        if( (accessFlags & ACCESS_READ) != 0 && u->hostCopyObsolete() )
+        if (!!(accessFlags & ACCESS_READ) && u->hostCopyObsolete())
         {
             AlignedDataPtr<false, true> alignedPtr(u->data, u->size, CV_OPENCL_DATA_PTR_ALIGNMENT);
 #ifdef HAVE_OPENCL_SVM
@@ -5735,7 +5737,7 @@ void convertFromBuffer(void* cl_mem_buffer, size_t step, int rows, int cols, int
     dst.u = new UMatData(getOpenCLAllocator());
     dst.u->data            = 0;
     dst.u->allocatorFlags_ = 0; // not allocated from any OpenCV buffer pool
-    dst.u->flags           = 0;
+    dst.u->flags           = static_cast<UMatData::MemoryFlag>(0);
     dst.u->handle          = cl_mem_buffer;
     dst.u->origdata        = 0;
     dst.u->prevAllocator   = 0;
diff --git a/modules/core/src/opengl.cpp b/modules/core/src/opengl.cpp
index 3b05636363..dc122f2fd7 100644
--- a/modules/core/src/opengl.cpp
+++ b/modules/core/src/opengl.cpp
@@ -1804,8 +1804,8 @@ void convertFromGLTexture2D(const Texture2D& texture, OutputArray dst)
 #endif
 }
 
-//void mapGLBuffer(const Buffer& buffer, UMat& dst, int accessFlags)
-UMat mapGLBuffer(const Buffer& buffer, int accessFlags)
+//void mapGLBuffer(const Buffer& buffer, UMat& dst, AccessFlag accessFlags)
+UMat mapGLBuffer(const Buffer& buffer, AccessFlag accessFlags)
 {
     CV_UNUSED(buffer); CV_UNUSED(accessFlags);
 #if !defined(HAVE_OPENGL)
diff --git a/modules/core/src/out.cpp b/modules/core/src/out.cpp
index 89770fe33f..aad8429e2d 100644
--- a/modules/core/src/out.cpp
+++ b/modules/core/src/out.cpp
@@ -372,7 +372,7 @@ namespace cv
     Formatted::~Formatted() {}
     Formatter::~Formatter() {}
 
-    Ptr<Formatter> Formatter::get(int fmt)
+    Ptr<Formatter> Formatter::get(Formatter::FormatType fmt)
     {
         switch(fmt)
         {
diff --git a/modules/core/src/precomp.hpp b/modules/core/src/precomp.hpp
index a7d901d806..796edb98ec 100644
--- a/modules/core/src/precomp.hpp
+++ b/modules/core/src/precomp.hpp
@@ -210,7 +210,7 @@ enum { BLOCK_SIZE = 1024 };
 #define ARITHM_USE_IPP 0
 #endif
 
-inline bool checkScalar(const Mat& sc, int atype, int sckind, int akind)
+inline bool checkScalar(const Mat& sc, int atype, _InputArray::KindFlag sckind, _InputArray::KindFlag akind)
 {
     if( sc.dims > 2 || !sc.isContinuous() )
         return false;
@@ -224,7 +224,7 @@ inline bool checkScalar(const Mat& sc, int atype, int sckind, int akind)
            (sz == Size(1, 4) && sc.type() == CV_64F && cn <= 4);
 }
 
-inline bool checkScalar(InputArray sc, int atype, int sckind, int akind)
+inline bool checkScalar(InputArray sc, int atype, _InputArray::KindFlag sckind, _InputArray::KindFlag akind)
 {
     if( sc.dims() > 2 || !sc.isContinuous() )
         return false;
diff --git a/modules/core/src/umatrix.cpp b/modules/core/src/umatrix.cpp
index 27d587b186..5e60d2c1ba 100644
--- a/modules/core/src/umatrix.cpp
+++ b/modules/core/src/umatrix.cpp
@@ -64,7 +64,7 @@ UMatData::UMatData(const MatAllocator* allocator)
     urefcount = refcount = mapcount = 0;
     data = origdata = 0;
     size = 0;
-    flags = 0;
+    flags = static_cast<UMatData::MemoryFlag>(0);
     handle = 0;
     userdata = 0;
     allocatorFlags_ = 0;
@@ -78,7 +78,7 @@ UMatData::~UMatData()
     CV_Assert(mapcount == 0);
     data = origdata = 0;
     size = 0;
-    flags = 0;
+    flags = static_cast<UMatData::MemoryFlag>(0);
     handle = 0;
     userdata = 0;
     allocatorFlags_ = 0;
@@ -333,7 +333,7 @@ void finalizeHdr(UMat& m)
 }
 
 
-UMat Mat::getUMat(int accessFlags, UMatUsageFlags usageFlags) const
+UMat Mat::getUMat(AccessFlag accessFlags, UMatUsageFlags usageFlags) const
 {
     UMat hdr;
     if(!data)
@@ -444,13 +444,13 @@ void UMat::create(int d, const int* _sizes, int _type, UMatUsageFlags _usageFlag
         }
         CV_TRY
         {
-            u = a->allocate(dims, size, _type, 0, step.p, 0, usageFlags);
+            u = a->allocate(dims, size, _type, 0, step.p, ACCESS_RW /* ignored */, usageFlags);
             CV_Assert(u != 0);
         }
         CV_CATCH_ALL
         {
             if(a != a0)
-                u = a0->allocate(dims, size, _type, 0, step.p, 0, usageFlags);
+                u = a0->allocate(dims, size, _type, 0, step.p, ACCESS_RW /* ignored */, usageFlags);
             CV_Assert(u != 0);
         }
         CV_Assert( step[dims-1] == (size_t)CV_ELEM_SIZE(flags) );
@@ -813,7 +813,7 @@ UMat UMat::reshape(int _cn, int _newndims, const int* _newsz) const
     CV_Error(CV_StsNotImplemented, "Reshaping of n-dimensional non-continuous matrices is not supported yet");
 }
 
-Mat UMat::getMat(int accessFlags) const
+Mat UMat::getMat(AccessFlag accessFlags) const
 {
     if(!u)
         return Mat();
@@ -840,7 +840,7 @@ Mat UMat::getMat(int accessFlags) const
     }
 }
 
-void* UMat::handle(int accessFlags) const
+void* UMat::handle(AccessFlag accessFlags) const
 {
     if( !u )
         return 0;
@@ -852,7 +852,7 @@ void* UMat::handle(int accessFlags) const
         u->currAllocator->unmap(u);
     }
 
-    if ((accessFlags & ACCESS_WRITE) != 0)
+    if (!!(accessFlags & ACCESS_WRITE))
         u->markHostCopyObsolete(true);
 
     return u->handle;
diff --git a/modules/core/test/test_mat.cpp b/modules/core/test/test_mat.cpp
index dab8373d5e..32b83d431b 100644
--- a/modules/core/test/test_mat.cpp
+++ b/modules/core/test/test_mat.cpp
@@ -946,7 +946,7 @@ void Core_ArrayOpTest::run( int /* start_from */)
 }
 
 
-template <class ElemType>
+template <class T>
 int calcDiffElemCountImpl(const vector<Mat>& mv, const Mat& m)
 {
     int diffElemCount = 0;
@@ -955,12 +955,12 @@ int calcDiffElemCountImpl(const vector<Mat>& mv, const Mat& m)
     {
         for(int x = 0; x < m.cols; x++)
         {
-            const ElemType* mElem = &m.at<ElemType>(y,x*mChannels);
+            const T* mElem = &m.at<T>(y, x*mChannels);
             size_t loc = 0;
             for(size_t i = 0; i < mv.size(); i++)
             {
                 const size_t mvChannel = mv[i].channels();
-                const ElemType* mvElem = &mv[i].at<ElemType>(y,x*(int)mvChannel);
+                const T* mvElem = &mv[i].at<T>(y, x*(int)mvChannel);
                 for(size_t li = 0; li < mvChannel; li++)
                     if(mElem[loc + li] != mvElem[li])
                         diffElemCount++;
diff --git a/modules/dnn/include/opencv2/dnn/dict.hpp b/modules/dnn/include/opencv2/dnn/dict.hpp
index eb069f743d..72ae5e3a15 100644
--- a/modules/dnn/include/opencv2/dnn/dict.hpp
+++ b/modules/dnn/include/opencv2/dnn/dict.hpp
@@ -95,7 +95,7 @@ struct CV_EXPORTS_W DictValue
 
 private:
 
-    int type;
+    Param type;
 
     union
     {
@@ -105,7 +105,7 @@ private:
         void *pv;
     };
 
-    DictValue(int _type, void *_p) : type(_type), pv(_p) {}
+    DictValue(Param _type, void *_p) : type(_type), pv(_p) {}
     void release();
 };
 
diff --git a/modules/dnn/include/opencv2/dnn/dnn.inl.hpp b/modules/dnn/include/opencv2/dnn/dnn.inl.hpp
index 8982db4530..d6809ce3fd 100644
--- a/modules/dnn/include/opencv2/dnn/dnn.inl.hpp
+++ b/modules/dnn/include/opencv2/dnn/dnn.inl.hpp
@@ -199,6 +199,16 @@ inline void DictValue::release()
     case Param::REAL:
         delete pd;
         break;
+    case Param::BOOLEAN:
+    case Param::MAT:
+    case Param::MAT_VECTOR:
+    case Param::ALGORITHM:
+    case Param::FLOAT:
+    case Param::UNSIGNED_INT:
+    case Param::UINT64:
+    case Param::UCHAR:
+    case Param::SCALAR:
+        break; // unhandled
     }
 }
 
@@ -273,8 +283,18 @@ inline int DictValue::size() const
         return (int)ps->size();
     case Param::REAL:
         return (int)pd->size();
+    case Param::BOOLEAN:
+    case Param::MAT:
+    case Param::MAT_VECTOR:
+    case Param::ALGORITHM:
+    case Param::FLOAT:
+    case Param::UNSIGNED_INT:
+    case Param::UINT64:
+    case Param::UCHAR:
+    case Param::SCALAR:
+        break; // unhandled
     }
-    CV_Error(Error::StsInternal, "");
+    CV_Error_(Error::StsInternal, ("Unhandled type (%d)", static_cast<int>(type)));
 }
 
 inline std::ostream &operator<<(std::ostream &stream, const DictValue &dictv)
diff --git a/modules/features2d/include/opencv2/features2d.hpp b/modules/features2d/include/opencv2/features2d.hpp
index 1ba4f0da26..254a82f40c 100644
--- a/modules/features2d/include/opencv2/features2d.hpp
+++ b/modules/features2d/include/opencv2/features2d.hpp
@@ -293,7 +293,8 @@ k-tuples) are rotated according to the measured orientation).
 class CV_EXPORTS_W ORB : public Feature2D
 {
 public:
-    enum { kBytes = 32, HARRIS_SCORE=0, FAST_SCORE=1 };
+    enum ScoreType { HARRIS_SCORE=0, FAST_SCORE=1 };
+    static const int kBytes = 32;
 
     /** @brief The ORB constructor
 
@@ -327,7 +328,7 @@ public:
     @param fastThreshold
      */
     CV_WRAP static Ptr<ORB> create(int nfeatures=500, float scaleFactor=1.2f, int nlevels=8, int edgeThreshold=31,
-        int firstLevel=0, int WTA_K=2, int scoreType=ORB::HARRIS_SCORE, int patchSize=31, int fastThreshold=20);
+        int firstLevel=0, int WTA_K=2, ORB::ScoreType scoreType=ORB::HARRIS_SCORE, int patchSize=31, int fastThreshold=20);
 
     CV_WRAP virtual void setMaxFeatures(int maxFeatures) = 0;
     CV_WRAP virtual int getMaxFeatures() const = 0;
@@ -347,8 +348,8 @@ public:
     CV_WRAP virtual void setWTA_K(int wta_k) = 0;
     CV_WRAP virtual int getWTA_K() const = 0;
 
-    CV_WRAP virtual void setScoreType(int scoreType) = 0;
-    CV_WRAP virtual int getScoreType() const = 0;
+    CV_WRAP virtual void setScoreType(ORB::ScoreType scoreType) = 0;
+    CV_WRAP virtual ORB::ScoreType getScoreType() const = 0;
 
     CV_WRAP virtual void setPatchSize(int patchSize) = 0;
     CV_WRAP virtual int getPatchSize() const = 0;
@@ -418,6 +419,41 @@ public:
     CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
 };
 
+//! @} features2d_main
+
+//! @addtogroup features2d_main
+//! @{
+
+/** @brief Wrapping class for feature detection using the FAST method. :
+ */
+class CV_EXPORTS_W FastFeatureDetector : public Feature2D
+{
+public:
+    enum DetectorType
+    {
+        TYPE_5_8 = 0, TYPE_7_12 = 1, TYPE_9_16 = 2
+    };
+    enum
+    {
+        THRESHOLD = 10000, NONMAX_SUPPRESSION=10001, FAST_N=10002
+    };
+
+
+    CV_WRAP static Ptr<FastFeatureDetector> create( int threshold=10,
+                                                    bool nonmaxSuppression=true,
+                                                    FastFeatureDetector::DetectorType type=FastFeatureDetector::TYPE_9_16 );
+
+    CV_WRAP virtual void setThreshold(int threshold) = 0;
+    CV_WRAP virtual int getThreshold() const = 0;
+
+    CV_WRAP virtual void setNonmaxSuppression(bool f) = 0;
+    CV_WRAP virtual bool getNonmaxSuppression() const = 0;
+
+    CV_WRAP virtual void setType(FastFeatureDetector::DetectorType type) = 0;
+    CV_WRAP virtual FastFeatureDetector::DetectorType getType() const = 0;
+    CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
+};
+
 /** @overload */
 CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
                       int threshold, bool nonmaxSuppression=true );
@@ -441,27 +477,31 @@ cv2.FAST_FEATURE_DETECTOR_TYPE_7_12 and cv2.FAST_FEATURE_DETECTOR_TYPE_9_16. For
 detection, use cv2.FAST.detect() method.
  */
 CV_EXPORTS void FAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
-                      int threshold, bool nonmaxSuppression, int type );
+                      int threshold, bool nonmaxSuppression, FastFeatureDetector::DetectorType type );
 
 //! @} features2d_main
 
 //! @addtogroup features2d_main
 //! @{
 
-/** @brief Wrapping class for feature detection using the FAST method. :
+/** @brief Wrapping class for feature detection using the AGAST method. :
  */
-class CV_EXPORTS_W FastFeatureDetector : public Feature2D
+class CV_EXPORTS_W AgastFeatureDetector : public Feature2D
 {
 public:
+    enum DetectorType
+    {
+        AGAST_5_8 = 0, AGAST_7_12d = 1, AGAST_7_12s = 2, OAST_9_16 = 3,
+    };
+
     enum
     {
-        TYPE_5_8 = 0, TYPE_7_12 = 1, TYPE_9_16 = 2,
-        THRESHOLD = 10000, NONMAX_SUPPRESSION=10001, FAST_N=10002,
+        THRESHOLD = 10000, NONMAX_SUPPRESSION = 10001,
     };
 
-    CV_WRAP static Ptr<FastFeatureDetector> create( int threshold=10,
-                                                    bool nonmaxSuppression=true,
-                                                    int type=FastFeatureDetector::TYPE_9_16 );
+    CV_WRAP static Ptr<AgastFeatureDetector> create( int threshold=10,
+                                                     bool nonmaxSuppression=true,
+                                                     AgastFeatureDetector::DetectorType type = AgastFeatureDetector::OAST_9_16);
 
     CV_WRAP virtual void setThreshold(int threshold) = 0;
     CV_WRAP virtual int getThreshold() const = 0;
@@ -469,8 +509,8 @@ public:
     CV_WRAP virtual void setNonmaxSuppression(bool f) = 0;
     CV_WRAP virtual bool getNonmaxSuppression() const = 0;
 
-    CV_WRAP virtual void setType(int type) = 0;
-    CV_WRAP virtual int getType() const = 0;
+    CV_WRAP virtual void setType(AgastFeatureDetector::DetectorType type) = 0;
+    CV_WRAP virtual AgastFeatureDetector::DetectorType getType() const = 0;
     CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
 };
 
@@ -497,37 +537,7 @@ Detects corners using the AGAST algorithm by @cite mair2010_agast .
 
  */
 CV_EXPORTS void AGAST( InputArray image, CV_OUT std::vector<KeyPoint>& keypoints,
-                      int threshold, bool nonmaxSuppression, int type );
-//! @} features2d_main
-
-//! @addtogroup features2d_main
-//! @{
-
-/** @brief Wrapping class for feature detection using the AGAST method. :
- */
-class CV_EXPORTS_W AgastFeatureDetector : public Feature2D
-{
-public:
-    enum
-    {
-        AGAST_5_8 = 0, AGAST_7_12d = 1, AGAST_7_12s = 2, OAST_9_16 = 3,
-        THRESHOLD = 10000, NONMAX_SUPPRESSION = 10001,
-    };
-
-    CV_WRAP static Ptr<AgastFeatureDetector> create( int threshold=10,
-                                                     bool nonmaxSuppression=true,
-                                                     int type=AgastFeatureDetector::OAST_9_16 );
-
-    CV_WRAP virtual void setThreshold(int threshold) = 0;
-    CV_WRAP virtual int getThreshold() const = 0;
-
-    CV_WRAP virtual void setNonmaxSuppression(bool f) = 0;
-    CV_WRAP virtual bool getNonmaxSuppression() const = 0;
-
-    CV_WRAP virtual void setType(int type) = 0;
-    CV_WRAP virtual int getType() const = 0;
-    CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
-};
+                      int threshold, bool nonmaxSuppression, AgastFeatureDetector::DetectorType type );
 
 /** @brief Wrapping class for feature detection using the goodFeaturesToTrack function. :
  */
@@ -639,7 +649,7 @@ F. Alcantarilla, Adrien Bartoli and Andrew J. Davison. In European Conference on
 class CV_EXPORTS_W KAZE : public Feature2D
 {
 public:
-    enum
+    enum DiffusivityType
     {
         DIFF_PM_G1 = 0,
         DIFF_PM_G2 = 1,
@@ -660,7 +670,7 @@ public:
     CV_WRAP static Ptr<KAZE> create(bool extended=false, bool upright=false,
                                     float threshold = 0.001f,
                                     int nOctaves = 4, int nOctaveLayers = 4,
-                                    int diffusivity = KAZE::DIFF_PM_G2);
+                                    KAZE::DiffusivityType diffusivity = KAZE::DIFF_PM_G2);
 
     CV_WRAP virtual void setExtended(bool extended) = 0;
     CV_WRAP virtual bool getExtended() const = 0;
@@ -677,8 +687,8 @@ public:
     CV_WRAP virtual void setNOctaveLayers(int octaveLayers) = 0;
     CV_WRAP virtual int getNOctaveLayers() const = 0;
 
-    CV_WRAP virtual void setDiffusivity(int diff) = 0;
-    CV_WRAP virtual int getDiffusivity() const = 0;
+    CV_WRAP virtual void setDiffusivity(KAZE::DiffusivityType diff) = 0;
+    CV_WRAP virtual KAZE::DiffusivityType getDiffusivity() const = 0;
     CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
 };
 
@@ -702,7 +712,7 @@ class CV_EXPORTS_W AKAZE : public Feature2D
 {
 public:
     // AKAZE descriptor type
-    enum
+    enum DescriptorType
     {
         DESCRIPTOR_KAZE_UPRIGHT = 2, ///< Upright descriptors, not invariant to rotation
         DESCRIPTOR_KAZE = 3,
@@ -722,13 +732,13 @@ public:
     @param diffusivity Diffusivity type. DIFF_PM_G1, DIFF_PM_G2, DIFF_WEICKERT or
     DIFF_CHARBONNIER
      */
-    CV_WRAP static Ptr<AKAZE> create(int descriptor_type=AKAZE::DESCRIPTOR_MLDB,
+    CV_WRAP static Ptr<AKAZE> create(AKAZE::DescriptorType descriptor_type = AKAZE::DESCRIPTOR_MLDB,
                                      int descriptor_size = 0, int descriptor_channels = 3,
                                      float threshold = 0.001f, int nOctaves = 4,
-                                     int nOctaveLayers = 4, int diffusivity = KAZE::DIFF_PM_G2);
+                                     int nOctaveLayers = 4, KAZE::DiffusivityType diffusivity = KAZE::DIFF_PM_G2);
 
-    CV_WRAP virtual void setDescriptorType(int dtype) = 0;
-    CV_WRAP virtual int getDescriptorType() const = 0;
+    CV_WRAP virtual void setDescriptorType(AKAZE::DescriptorType dtype) = 0;
+    CV_WRAP virtual AKAZE::DescriptorType getDescriptorType() const = 0;
 
     CV_WRAP virtual void setDescriptorSize(int dsize) = 0;
     CV_WRAP virtual int getDescriptorSize() const = 0;
@@ -745,8 +755,8 @@ public:
     CV_WRAP virtual void setNOctaveLayers(int octaveLayers) = 0;
     CV_WRAP virtual int getNOctaveLayers() const = 0;
 
-    CV_WRAP virtual void setDiffusivity(int diff) = 0;
-    CV_WRAP virtual int getDiffusivity() const = 0;
+    CV_WRAP virtual void setDiffusivity(KAZE::DiffusivityType diff) = 0;
+    CV_WRAP virtual KAZE::DiffusivityType getDiffusivity() const = 0;
     CV_WRAP virtual String getDefaultName() const CV_OVERRIDE;
 };
 
@@ -773,7 +783,7 @@ template<> struct Accumulator<short>  { typedef float Type; };
 template<class T>
 struct CV_EXPORTS SL2
 {
-    enum { normType = NORM_L2SQR };
+    static const NormTypes normType = NORM_L2SQR;
     typedef T ValueType;
     typedef typename Accumulator<T>::Type ResultType;
 
@@ -789,7 +799,7 @@ struct CV_EXPORTS SL2
 template<class T>
 struct L2
 {
-    enum { normType = NORM_L2 };
+    static const NormTypes normType = NORM_L2;
     typedef T ValueType;
     typedef typename Accumulator<T>::Type ResultType;
 
@@ -805,7 +815,7 @@ struct L2
 template<class T>
 struct L1
 {
-    enum { normType = NORM_L1 };
+    static const NormTypes normType = NORM_L1;
     typedef T ValueType;
     typedef typename Accumulator<T>::Type ResultType;
 
@@ -830,7 +840,7 @@ an image set.
 class CV_EXPORTS_W DescriptorMatcher : public Algorithm
 {
 public:
-   enum
+   enum MatcherType
     {
         FLANNBASED            = 1,
         BRUTEFORCE            = 2,
@@ -839,6 +849,7 @@ public:
         BRUTEFORCE_HAMMINGLUT = 5,
         BRUTEFORCE_SL2        = 6
     };
+
     virtual ~DescriptorMatcher();
 
     /** @brief Adds descriptors to train a CPU(trainDescCollectionis) or GPU(utrainDescCollectionis) descriptor
@@ -1016,7 +1027,7 @@ public:
      */
     CV_WRAP static Ptr<DescriptorMatcher> create( const String& descriptorMatcherType );
 
-    CV_WRAP static Ptr<DescriptorMatcher> create( int matcherType );
+    CV_WRAP static Ptr<DescriptorMatcher> create( const DescriptorMatcher::MatcherType& matcherType );
 
 
     // see corresponding cv::Algorithm method
@@ -1171,20 +1182,20 @@ protected:
 //! @addtogroup features2d_draw
 //! @{
 
-struct CV_EXPORTS DrawMatchesFlags
+enum struct DrawMatchesFlags
 {
-    enum{ DEFAULT = 0, //!< Output image matrix will be created (Mat::create),
-                       //!< i.e. existing memory of output image may be reused.
-                       //!< Two source image, matches and single keypoints will be drawn.
-                       //!< For each keypoint only the center point will be drawn (without
-                       //!< the circle around keypoint with keypoint size and orientation).
-          DRAW_OVER_OUTIMG = 1, //!< Output image matrix will not be created (Mat::create).
-                                //!< Matches will be drawn on existing content of output image.
-          NOT_DRAW_SINGLE_POINTS = 2, //!< Single keypoints will not be drawn.
-          DRAW_RICH_KEYPOINTS = 4 //!< For each keypoint the circle around keypoint with keypoint size and
-                                  //!< orientation will be drawn.
-        };
+  DEFAULT = 0, //!< Output image matrix will be created (Mat::create),
+               //!< i.e. existing memory of output image may be reused.
+               //!< Two source image, matches and single keypoints will be drawn.
+               //!< For each keypoint only the center point will be drawn (without
+               //!< the circle around keypoint with keypoint size and orientation).
+  DRAW_OVER_OUTIMG = 1, //!< Output image matrix will not be created (Mat::create).
+                        //!< Matches will be drawn on existing content of output image.
+  NOT_DRAW_SINGLE_POINTS = 2, //!< Single keypoints will not be drawn.
+  DRAW_RICH_KEYPOINTS = 4 //!< For each keypoint the circle around keypoint with keypoint size and
+                          //!< orientation will be drawn.
 };
+CV_ENUM_FLAGS(DrawMatchesFlags);
 
 /** @brief Draws keypoints.
 
@@ -1202,7 +1213,7 @@ cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS, cv2.DRAW_MATCHES_FLAGS_DRAW_OVER_OUT
 cv2.DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS
  */
 CV_EXPORTS_W void drawKeypoints( InputArray image, const std::vector<KeyPoint>& keypoints, InputOutputArray outImage,
-                               const Scalar& color=Scalar::all(-1), int flags=DrawMatchesFlags::DEFAULT );
+                               const Scalar& color=Scalar::all(-1), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT );
 
 /** @brief Draws the found matches of keypoints from two images.
 
@@ -1230,14 +1241,14 @@ CV_EXPORTS_W void drawMatches( InputArray img1, const std::vector<KeyPoint>& key
                              InputArray img2, const std::vector<KeyPoint>& keypoints2,
                              const std::vector<DMatch>& matches1to2, InputOutputArray outImg,
                              const Scalar& matchColor=Scalar::all(-1), const Scalar& singlePointColor=Scalar::all(-1),
-                             const std::vector<char>& matchesMask=std::vector<char>(), int flags=DrawMatchesFlags::DEFAULT );
+                             const std::vector<char>& matchesMask=std::vector<char>(), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT );
 
 /** @overload */
 CV_EXPORTS_AS(drawMatchesKnn) void drawMatches( InputArray img1, const std::vector<KeyPoint>& keypoints1,
                              InputArray img2, const std::vector<KeyPoint>& keypoints2,
                              const std::vector<std::vector<DMatch> >& matches1to2, InputOutputArray outImg,
                              const Scalar& matchColor=Scalar::all(-1), const Scalar& singlePointColor=Scalar::all(-1),
-                             const std::vector<std::vector<char> >& matchesMask=std::vector<std::vector<char> >(), int flags=DrawMatchesFlags::DEFAULT );
+                             const std::vector<std::vector<char> >& matchesMask=std::vector<std::vector<char> >(), DrawMatchesFlags flags=DrawMatchesFlags::DEFAULT );
 
 //! @} features2d_draw
 
diff --git a/modules/features2d/misc/python/pyopencv_features2d.hpp b/modules/features2d/misc/python/pyopencv_features2d.hpp
index b865e361b6..ae43995eff 100644
--- a/modules/features2d/misc/python/pyopencv_features2d.hpp
+++ b/modules/features2d/misc/python/pyopencv_features2d.hpp
@@ -1,3 +1,24 @@
 #ifdef HAVE_OPENCV_FEATURES2D
 typedef SimpleBlobDetector::Params SimpleBlobDetector_Params;
+typedef AKAZE::DescriptorType AKAZE_DescriptorType;
+typedef AgastFeatureDetector::DetectorType AgastFeatureDetector_DetectorType;
+typedef FastFeatureDetector::DetectorType FastFeatureDetector_DetectorType;
+typedef DescriptorMatcher::MatcherType DescriptorMatcher_MatcherType;
+typedef KAZE::DiffusivityType KAZE_DiffusivityType;
+typedef ORB::ScoreType ORB_ScoreType;
+
+CV_PY_FROM_ENUM(AKAZE::DescriptorType);
+CV_PY_TO_ENUM(AKAZE::DescriptorType);
+CV_PY_FROM_ENUM(AgastFeatureDetector::DetectorType);
+CV_PY_TO_ENUM(AgastFeatureDetector::DetectorType);
+CV_PY_FROM_ENUM(DrawMatchesFlags);
+CV_PY_TO_ENUM(DrawMatchesFlags);
+CV_PY_FROM_ENUM(FastFeatureDetector::DetectorType);
+CV_PY_TO_ENUM(FastFeatureDetector::DetectorType);
+CV_PY_FROM_ENUM(DescriptorMatcher::MatcherType);
+CV_PY_TO_ENUM(DescriptorMatcher::MatcherType);
+CV_PY_FROM_ENUM(KAZE::DiffusivityType);
+CV_PY_TO_ENUM(KAZE::DiffusivityType);
+CV_PY_FROM_ENUM(ORB::ScoreType);
+CV_PY_TO_ENUM(ORB::ScoreType);
 #endif
\ No newline at end of file
diff --git a/modules/features2d/src/agast.cpp b/modules/features2d/src/agast.cpp
index 507ed1b97a..e99ceec416 100644
--- a/modules/features2d/src/agast.cpp
+++ b/modules/features2d/src/agast.cpp
@@ -7446,7 +7446,7 @@ static void OAST_9_16(InputArray _img, std::vector<KeyPoint>& keypoints, int thr
 
 #else // !(defined __i386__ || defined(_M_IX86) || defined __x86_64__ || defined(_M_X64))
 
-static void AGAST_ALL(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, int agasttype)
+static void AGAST_ALL(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, AgastFeatureDetector::DetectorType agasttype)
 {
     cv::Mat img;
     if(!_img.getMat().isContinuous())
@@ -7944,8 +7944,8 @@ void AGAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, boo
 class AgastFeatureDetector_Impl CV_FINAL : public AgastFeatureDetector
 {
 public:
-    AgastFeatureDetector_Impl( int _threshold, bool _nonmaxSuppression, int _type )
-    : threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type((short)_type)
+    AgastFeatureDetector_Impl( int _threshold, bool _nonmaxSuppression, DetectorType _type )
+    : threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type(_type)
     {}
 
     void detect( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask ) CV_OVERRIDE
@@ -7998,20 +7998,20 @@ public:
     void setNonmaxSuppression(bool f) CV_OVERRIDE { nonmaxSuppression = f; }
     bool getNonmaxSuppression() const CV_OVERRIDE { return nonmaxSuppression; }
 
-    void setType(int type_) CV_OVERRIDE { type = type_; }
-    int getType() const CV_OVERRIDE { return type; }
+    void setType(DetectorType type_) CV_OVERRIDE{ type = type_; }
+    DetectorType getType() const CV_OVERRIDE{ return type; }
 
     int threshold;
     bool nonmaxSuppression;
-    int type;
+    DetectorType type;
 };
 
-Ptr<AgastFeatureDetector> AgastFeatureDetector::create( int threshold, bool nonmaxSuppression, int type )
+Ptr<AgastFeatureDetector> AgastFeatureDetector::create( int threshold, bool nonmaxSuppression, AgastFeatureDetector::DetectorType type )
 {
     return makePtr<AgastFeatureDetector_Impl>(threshold, nonmaxSuppression, type);
 }
 
-void AGAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, int type)
+void AGAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, AgastFeatureDetector::DetectorType type)
 {
     CV_INSTRUMENT_REGION();
 
diff --git a/modules/features2d/src/agast_score.cpp b/modules/features2d/src/agast_score.cpp
index 92a34a758e..ff40da4a81 100644
--- a/modules/features2d/src/agast_score.cpp
+++ b/modules/features2d/src/agast_score.cpp
@@ -47,7 +47,7 @@ The references are:
 namespace cv
 {
 
-void makeAgastOffsets(int pixel[16], int rowStride, int type)
+void makeAgastOffsets(int pixel[16], int rowStride, AgastFeatureDetector::DetectorType type)
 {
     static const int offsets16[][2] =
     {
@@ -9400,7 +9400,7 @@ int agast_tree_search(const uint32_t table_struct32[], int pixel_[], const unsig
 }
 
 // universal pixel mask
-int AGAST_ALL_SCORE(const uchar* ptr, const int pixel[], int threshold, int agasttype)
+int AGAST_ALL_SCORE(const uchar* ptr, const int pixel[], int threshold, AgastFeatureDetector::DetectorType agasttype)
 {
     int bmin = threshold;
     int bmax = 255;
diff --git a/modules/features2d/src/agast_score.hpp b/modules/features2d/src/agast_score.hpp
index f7d668ba73..7f876466ec 100644
--- a/modules/features2d/src/agast_score.hpp
+++ b/modules/features2d/src/agast_score.hpp
@@ -54,13 +54,13 @@ namespace cv
 
 #if !(defined __i386__ || defined(_M_IX86) || defined __x86_64__ || defined(_M_X64))
 int agast_tree_search(const uint32_t table_struct32[], int pixel_[], const unsigned char* const ptr, int threshold);
-int AGAST_ALL_SCORE(const uchar* ptr, const int pixel[], int threshold, int agasttype);
+int AGAST_ALL_SCORE(const uchar* ptr, const int pixel[], int threshold, AgastFeatureDetector::DetectorType agasttype);
 #endif //!(defined __i386__ || defined(_M_IX86) || defined __x86_64__ || defined(_M_X64))
 
 
-void makeAgastOffsets(int pixel[16], int row_stride, int type);
+void makeAgastOffsets(int pixel[16], int row_stride, AgastFeatureDetector::DetectorType type);
 
-template<int type>
+template<AgastFeatureDetector::DetectorType type>
 int agast_cornerScore(const uchar* ptr, const int pixel[], int threshold);
 
 
diff --git a/modules/features2d/src/akaze.cpp b/modules/features2d/src/akaze.cpp
index 49f3c2efa6..623738eed4 100644
--- a/modules/features2d/src/akaze.cpp
+++ b/modules/features2d/src/akaze.cpp
@@ -60,8 +60,8 @@ namespace cv
     class AKAZE_Impl : public AKAZE
     {
     public:
-        AKAZE_Impl(int _descriptor_type, int _descriptor_size, int _descriptor_channels,
-                 float _threshold, int _octaves, int _sublevels, int _diffusivity)
+        AKAZE_Impl(DescriptorType _descriptor_type, int _descriptor_size, int _descriptor_channels,
+                 float _threshold, int _octaves, int _sublevels, KAZE::DiffusivityType _diffusivity)
         : descriptor(_descriptor_type)
         , descriptor_channels(_descriptor_channels)
         , descriptor_size(_descriptor_size)
@@ -77,8 +77,8 @@ namespace cv
 
         }
 
-        void setDescriptorType(int dtype) CV_OVERRIDE { descriptor = dtype; }
-        int getDescriptorType() const CV_OVERRIDE { return descriptor; }
+        void setDescriptorType(DescriptorType dtype) CV_OVERRIDE{ descriptor = dtype; }
+        DescriptorType getDescriptorType() const CV_OVERRIDE{ return descriptor; }
 
         void setDescriptorSize(int dsize) CV_OVERRIDE { descriptor_size = dsize; }
         int getDescriptorSize() const CV_OVERRIDE { return descriptor_size; }
@@ -95,8 +95,8 @@ namespace cv
         void setNOctaveLayers(int octaveLayers_) CV_OVERRIDE { sublevels = octaveLayers_; }
         int getNOctaveLayers() const CV_OVERRIDE { return sublevels; }
 
-        void setDiffusivity(int diff_) CV_OVERRIDE { diffusivity = diff_; }
-        int getDiffusivity() const CV_OVERRIDE { return diffusivity; }
+        void setDiffusivity(KAZE::DiffusivityType diff_) CV_OVERRIDE{ diffusivity = diff_; }
+        KAZE::DiffusivityType getDiffusivity() const CV_OVERRIDE{ return diffusivity; }
 
         // returns the descriptor size in bytes
         int descriptorSize() const CV_OVERRIDE
@@ -218,28 +218,28 @@ namespace cv
 
         void read(const FileNode& fn) CV_OVERRIDE
         {
-            descriptor = (int)fn["descriptor"];
+            descriptor = static_cast<DescriptorType>((int)fn["descriptor"]);
             descriptor_channels = (int)fn["descriptor_channels"];
             descriptor_size = (int)fn["descriptor_size"];
             threshold = (float)fn["threshold"];
             octaves = (int)fn["octaves"];
             sublevels = (int)fn["sublevels"];
-            diffusivity = (int)fn["diffusivity"];
+            diffusivity = static_cast<KAZE::DiffusivityType>((int)fn["diffusivity"]);
         }
 
-        int descriptor;
+        DescriptorType descriptor;
         int descriptor_channels;
         int descriptor_size;
         float threshold;
         int octaves;
         int sublevels;
-        int diffusivity;
+        KAZE::DiffusivityType diffusivity;
     };
 
-    Ptr<AKAZE> AKAZE::create(int descriptor_type,
+    Ptr<AKAZE> AKAZE::create(DescriptorType descriptor_type,
                              int descriptor_size, int descriptor_channels,
                              float threshold, int octaves,
-                             int sublevels, int diffusivity)
+                             int sublevels, KAZE::DiffusivityType diffusivity)
     {
         return makePtr<AKAZE_Impl>(descriptor_type, descriptor_size, descriptor_channels,
                                    threshold, octaves, sublevels, diffusivity);
diff --git a/modules/features2d/src/draw.cpp b/modules/features2d/src/draw.cpp
index 21d2f35d1b..2132d17b42 100644
--- a/modules/features2d/src/draw.cpp
+++ b/modules/features2d/src/draw.cpp
@@ -50,12 +50,12 @@ namespace cv
 /*
  * Functions to draw keypoints and matches.
  */
-static inline void _drawKeypoint( InputOutputArray img, const KeyPoint& p, const Scalar& color, int flags )
+static inline void _drawKeypoint( InputOutputArray img, const KeyPoint& p, const Scalar& color, DrawMatchesFlags flags )
 {
     CV_Assert( !img.empty() );
     Point center( cvRound(p.pt.x * draw_multiplier), cvRound(p.pt.y * draw_multiplier) );
 
-    if( flags & DrawMatchesFlags::DRAW_RICH_KEYPOINTS )
+    if( !!(flags & DrawMatchesFlags::DRAW_RICH_KEYPOINTS) )
     {
         int radius = cvRound(p.size/2 * draw_multiplier); // KeyPoint::size is a diameter
 
@@ -89,7 +89,7 @@ static inline void _drawKeypoint( InputOutputArray img, const KeyPoint& p, const
 }
 
 void drawKeypoints( InputArray image, const std::vector<KeyPoint>& keypoints, InputOutputArray outImage,
-                    const Scalar& _color, int flags )
+                    const Scalar& _color, DrawMatchesFlags flags )
 {
     CV_INSTRUMENT_REGION();
 
@@ -125,12 +125,12 @@ void drawKeypoints( InputArray image, const std::vector<KeyPoint>& keypoints, In
 static void _prepareImgAndDrawKeypoints( InputArray img1, const std::vector<KeyPoint>& keypoints1,
                                          InputArray img2, const std::vector<KeyPoint>& keypoints2,
                                          InputOutputArray _outImg, Mat& outImg1, Mat& outImg2,
-                                         const Scalar& singlePointColor, int flags )
+                                         const Scalar& singlePointColor, DrawMatchesFlags flags )
 {
     Mat outImg;
     Size img1size = img1.size(), img2size = img2.size();
     Size size( img1size.width + img2size.width, MAX(img1size.height, img2size.height) );
-    if( flags & DrawMatchesFlags::DRAW_OVER_OUTIMG )
+    if( !!(flags & DrawMatchesFlags::DRAW_OVER_OUTIMG) )
     {
         outImg = _outImg.getMat();
         if( size.width > outImg.cols || size.height > outImg.rows )
@@ -169,7 +169,7 @@ static void _prepareImgAndDrawKeypoints( InputArray img1, const std::vector<KeyP
 }
 
 static inline void _drawMatch( InputOutputArray outImg, InputOutputArray outImg1, InputOutputArray outImg2 ,
-                          const KeyPoint& kp1, const KeyPoint& kp2, const Scalar& matchColor, int flags )
+                          const KeyPoint& kp1, const KeyPoint& kp2, const Scalar& matchColor, DrawMatchesFlags flags )
 {
     RNG& rng = theRNG();
     bool isRandMatchColor = matchColor == Scalar::all(-1);
@@ -192,7 +192,7 @@ void drawMatches( InputArray img1, const std::vector<KeyPoint>& keypoints1,
                   InputArray img2, const std::vector<KeyPoint>& keypoints2,
                   const std::vector<DMatch>& matches1to2, InputOutputArray outImg,
                   const Scalar& matchColor, const Scalar& singlePointColor,
-                  const std::vector<char>& matchesMask, int flags )
+                  const std::vector<char>& matchesMask, DrawMatchesFlags flags )
 {
     if( !matchesMask.empty() && matchesMask.size() != matches1to2.size() )
         CV_Error( Error::StsBadSize, "matchesMask must have the same size as matches1to2" );
@@ -221,7 +221,7 @@ void drawMatches( InputArray img1, const std::vector<KeyPoint>& keypoints1,
                   InputArray img2, const std::vector<KeyPoint>& keypoints2,
                   const std::vector<std::vector<DMatch> >& matches1to2, InputOutputArray outImg,
                   const Scalar& matchColor, const Scalar& singlePointColor,
-                  const std::vector<std::vector<char> >& matchesMask, int flags )
+                  const std::vector<std::vector<char> >& matchesMask, DrawMatchesFlags flags )
 {
     if( !matchesMask.empty() && matchesMask.size() != matches1to2.size() )
         CV_Error( Error::StsBadSize, "matchesMask must have the same size as matches1to2" );
diff --git a/modules/features2d/src/fast.cpp b/modules/features2d/src/fast.cpp
index 8082e4bd6a..79c2a26334 100644
--- a/modules/features2d/src/fast.cpp
+++ b/modules/features2d/src/fast.cpp
@@ -415,7 +415,7 @@ static bool openvx_FAST(InputArray _img, std::vector<KeyPoint>& keypoints,
 
 #endif
 
-static inline int hal_FAST(cv::Mat& src, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, int type)
+static inline int hal_FAST(cv::Mat& src, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, FastFeatureDetector::DetectorType type)
 {
     if (threshold > 20)
         return CV_HAL_ERROR_NOT_IMPLEMENTED;
@@ -472,7 +472,7 @@ static inline int hal_FAST(cv::Mat& src, std::vector<KeyPoint>& keypoints, int t
     return CV_HAL_ERROR_OK;
 }
 
-void FAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, int type)
+void FAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool nonmax_suppression, FastFeatureDetector::DetectorType type)
 {
     CV_INSTRUMENT_REGION();
 
@@ -514,8 +514,8 @@ void FAST(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold, bool
 class FastFeatureDetector_Impl CV_FINAL : public FastFeatureDetector
 {
 public:
-    FastFeatureDetector_Impl( int _threshold, bool _nonmaxSuppression, int _type )
-    : threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type((short)_type)
+    FastFeatureDetector_Impl( int _threshold, bool _nonmaxSuppression, FastFeatureDetector::DetectorType _type )
+    : threshold(_threshold), nonmaxSuppression(_nonmaxSuppression), type(_type)
     {}
 
     void detect( InputArray _image, std::vector<KeyPoint>& keypoints, InputArray _mask ) CV_OVERRIDE
@@ -548,7 +548,7 @@ public:
         else if(prop == NONMAX_SUPPRESSION)
             nonmaxSuppression = value != 0;
         else if(prop == FAST_N)
-            type = cvRound(value);
+            type = static_cast<FastFeatureDetector::DetectorType>(cvRound(value));
         else
             CV_Error(Error::StsBadArg, "");
     }
@@ -560,7 +560,7 @@ public:
         if(prop == NONMAX_SUPPRESSION)
             return nonmaxSuppression;
         if(prop == FAST_N)
-            return type;
+            return static_cast<int>(type);
         CV_Error(Error::StsBadArg, "");
         return 0;
     }
@@ -571,15 +571,15 @@ public:
     void setNonmaxSuppression(bool f) CV_OVERRIDE { nonmaxSuppression = f; }
     bool getNonmaxSuppression() const CV_OVERRIDE { return nonmaxSuppression; }
 
-    void setType(int type_) CV_OVERRIDE { type = type_; }
-    int getType() const CV_OVERRIDE { return type; }
+    void setType(FastFeatureDetector::DetectorType type_) CV_OVERRIDE{ type = type_; }
+    FastFeatureDetector::DetectorType getType() const CV_OVERRIDE{ return type; }
 
     int threshold;
     bool nonmaxSuppression;
-    int type;
+    FastFeatureDetector::DetectorType type;
 };
 
-Ptr<FastFeatureDetector> FastFeatureDetector::create( int threshold, bool nonmaxSuppression, int type )
+Ptr<FastFeatureDetector> FastFeatureDetector::create( int threshold, bool nonmaxSuppression, FastFeatureDetector::DetectorType type )
 {
     return makePtr<FastFeatureDetector_Impl>(threshold, nonmaxSuppression, type);
 }
diff --git a/modules/features2d/src/hal_replacement.hpp b/modules/features2d/src/hal_replacement.hpp
index 7780aa4a24..951b7b62ec 100644
--- a/modules/features2d/src/hal_replacement.hpp
+++ b/modules/features2d/src/hal_replacement.hpp
@@ -66,7 +66,7 @@
    @param width,height Source image dimensions
    @param type FAST type
 */
-inline int hal_ni_FAST_dense(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height, int type) { return CV_HAL_ERROR_NOT_IMPLEMENTED; }
+inline int hal_ni_FAST_dense(const uchar* src_data, size_t src_step, uchar* dst_data, size_t dst_step, int width, int height, cv::FastFeatureDetector::DetectorType type) { return CV_HAL_ERROR_NOT_IMPLEMENTED; }
 
 //! @cond IGNORED
 #define cv_hal_FAST_dense hal_ni_FAST_dense
@@ -94,7 +94,7 @@ inline int hal_ni_FAST_NMS(const uchar* src_data, size_t src_step, uchar* dst_da
    @param nonmax_suppression Indicates if make nonmaxima suppression or not.
    @param type FAST type
 */
-inline int hal_ni_FAST(const uchar* src_data, size_t src_step, int width, int height, uchar* keypoints_data, size_t* keypoints_count, int threshold, bool nonmax_suppression, int type) { return CV_HAL_ERROR_NOT_IMPLEMENTED; }
+inline int hal_ni_FAST(const uchar* src_data, size_t src_step, int width, int height, uchar* keypoints_data, size_t* keypoints_count, int threshold, bool nonmax_suppression, int /*cv::FastFeatureDetector::DetectorType*/ type) { return CV_HAL_ERROR_NOT_IMPLEMENTED; }
 
 //! @cond IGNORED
 #define cv_hal_FAST hal_ni_FAST
diff --git a/modules/features2d/src/kaze.cpp b/modules/features2d/src/kaze.cpp
index 833b92a367..0d841b7f7b 100644
--- a/modules/features2d/src/kaze.cpp
+++ b/modules/features2d/src/kaze.cpp
@@ -57,7 +57,7 @@ namespace cv
     {
     public:
         KAZE_Impl(bool _extended, bool _upright, float _threshold, int _octaves,
-                   int _sublevels, int _diffusivity)
+                   int _sublevels, KAZE::DiffusivityType _diffusivity)
         : extended(_extended)
         , upright(_upright)
         , threshold(_threshold)
@@ -84,8 +84,8 @@ namespace cv
         void setNOctaveLayers(int octaveLayers_) CV_OVERRIDE { sublevels = octaveLayers_; }
         int getNOctaveLayers() const CV_OVERRIDE { return sublevels; }
 
-        void setDiffusivity(int diff_) CV_OVERRIDE { diffusivity = diff_; }
-        int getDiffusivity() const CV_OVERRIDE { return diffusivity; }
+        void setDiffusivity(KAZE::DiffusivityType diff_) CV_OVERRIDE{ diffusivity = diff_; }
+        KAZE::DiffusivityType getDiffusivity() const CV_OVERRIDE{ return diffusivity; }
 
         // returns the descriptor size in bytes
         int descriptorSize() const CV_OVERRIDE
@@ -178,7 +178,7 @@ namespace cv
             threshold = (float)fn["threshold"];
             octaves = (int)fn["octaves"];
             sublevels = (int)fn["sublevels"];
-            diffusivity = (int)fn["diffusivity"];
+            diffusivity = static_cast<KAZE::DiffusivityType>((int)fn["diffusivity"]);
         }
 
         bool extended;
@@ -186,13 +186,13 @@ namespace cv
         float threshold;
         int octaves;
         int sublevels;
-        int diffusivity;
+        KAZE::DiffusivityType diffusivity;
     };
 
     Ptr<KAZE> KAZE::create(bool extended, bool upright,
                             float threshold,
                             int octaves, int sublevels,
-                            int diffusivity)
+                            KAZE::DiffusivityType diffusivity)
     {
         return makePtr<KAZE_Impl>(extended, upright, threshold, octaves, sublevels, diffusivity);
     }
diff --git a/modules/features2d/src/kaze/AKAZEConfig.h b/modules/features2d/src/kaze/AKAZEConfig.h
index 806d25c801..c9fbc51234 100644
--- a/modules/features2d/src/kaze/AKAZEConfig.h
+++ b/modules/features2d/src/kaze/AKAZEConfig.h
@@ -45,12 +45,12 @@ struct AKAZEOptions {
     float soffset;                  ///< Base scale offset (sigma units)
     float derivative_factor;        ///< Factor for the multiscale derivatives
     float sderivatives;             ///< Smoothing factor for the derivatives
-    int diffusivity;   ///< Diffusivity type
+    KAZE::DiffusivityType diffusivity;   ///< Diffusivity type
 
     float dthreshold;               ///< Detector response threshold to accept point
     float min_dthreshold;           ///< Minimum detector threshold to accept a point
 
-    int descriptor;     ///< Type of descriptor
+    AKAZE::DescriptorType descriptor;     ///< Type of descriptor
     int descriptor_size;            ///< Size of the descriptor in bits. 0->Full size
     int descriptor_channels;        ///< Number of channels in the descriptor (1, 2, 3)
     int descriptor_pattern_size;    ///< Actual patch size is 2*pattern_size*point.scale
diff --git a/modules/features2d/src/kaze/AKAZEFeatures.cpp b/modules/features2d/src/kaze/AKAZEFeatures.cpp
index 9b0d8311b0..bfba23aa29 100644
--- a/modules/features2d/src/kaze/AKAZEFeatures.cpp
+++ b/modules/features2d/src/kaze/AKAZEFeatures.cpp
@@ -377,7 +377,7 @@ ocl_pm_g2(InputArray Lx_, InputArray Ly_, OutputArray Lflow_, float kcontrast)
 #endif // HAVE_OPENCL
 
 static inline void
-compute_diffusivity(InputArray Lx, InputArray Ly, OutputArray Lflow, float kcontrast, int diffusivity)
+compute_diffusivity(InputArray Lx, InputArray Ly, OutputArray Lflow, float kcontrast, KAZE::DiffusivityType diffusivity)
 {
   CV_INSTRUMENT_REGION();
 
@@ -398,7 +398,7 @@ compute_diffusivity(InputArray Lx, InputArray Ly, OutputArray Lflow, float kcont
       charbonnier_diffusivity(Lx, Ly, Lflow, kcontrast);
     break;
     default:
-      CV_Error(diffusivity, "Diffusivity is not supported");
+      CV_Error_(Error::StsError, ("Diffusivity is not supported: %d", static_cast<int>(diffusivity)));
     break;
   }
 }
diff --git a/modules/features2d/src/kaze/KAZEConfig.h b/modules/features2d/src/kaze/KAZEConfig.h
index 5f2f8dcecd..35f8d54b95 100644
--- a/modules/features2d/src/kaze/KAZEConfig.h
+++ b/modules/features2d/src/kaze/KAZEConfig.h
@@ -36,7 +36,7 @@ struct KAZEOptions {
     {
     }
 
-    int diffusivity;
+    KAZE::DiffusivityType diffusivity;
     float soffset;
     int omax;
     int nsublevels;
diff --git a/modules/features2d/src/matchers.cpp b/modules/features2d/src/matchers.cpp
index d78000b459..3a2d48c21b 100644
--- a/modules/features2d/src/matchers.cpp
+++ b/modules/features2d/src/matchers.cpp
@@ -1049,7 +1049,7 @@ Ptr<DescriptorMatcher> DescriptorMatcher::create( const String& descriptorMatche
     return dm;
 }
 
-Ptr<DescriptorMatcher> DescriptorMatcher::create(int matcherType)
+Ptr<DescriptorMatcher> DescriptorMatcher::create( const MatcherType& matcherType )
 {
 
 
diff --git a/modules/features2d/src/orb.cpp b/modules/features2d/src/orb.cpp
index e3468af60b..ac0655fe12 100644
--- a/modules/features2d/src/orb.cpp
+++ b/modules/features2d/src/orb.cpp
@@ -655,7 +655,7 @@ class ORB_Impl CV_FINAL : public ORB
 {
 public:
     explicit ORB_Impl(int _nfeatures, float _scaleFactor, int _nlevels, int _edgeThreshold,
-             int _firstLevel, int _WTA_K, int _scoreType, int _patchSize, int _fastThreshold) :
+             int _firstLevel, int _WTA_K, ORB::ScoreType _scoreType, int _patchSize, int _fastThreshold) :
         nfeatures(_nfeatures), scaleFactor(_scaleFactor), nlevels(_nlevels),
         edgeThreshold(_edgeThreshold), firstLevel(_firstLevel), wta_k(_WTA_K),
         scoreType(_scoreType), patchSize(_patchSize), fastThreshold(_fastThreshold)
@@ -679,8 +679,8 @@ public:
     void setWTA_K(int wta_k_) CV_OVERRIDE { wta_k = wta_k_; }
     int getWTA_K() const CV_OVERRIDE { return wta_k; }
 
-    void setScoreType(int scoreType_) CV_OVERRIDE { scoreType = scoreType_; }
-    int getScoreType() const CV_OVERRIDE { return scoreType; }
+    void setScoreType(ORB::ScoreType scoreType_) CV_OVERRIDE{ scoreType = scoreType_; }
+    ORB::ScoreType getScoreType() const CV_OVERRIDE{ return scoreType; }
 
     void setPatchSize(int patchSize_) CV_OVERRIDE { patchSize = patchSize_; }
     int getPatchSize() const CV_OVERRIDE { return patchSize; }
@@ -707,7 +707,7 @@ protected:
     int edgeThreshold;
     int firstLevel;
     int wta_k;
-    int scoreType;
+    ORB::ScoreType scoreType;
     int patchSize;
     int fastThreshold;
 };
@@ -775,7 +775,7 @@ static void computeKeyPoints(const Mat& imagePyramid,
                              const std::vector<float>& layerScale,
                              std::vector<KeyPoint>& allKeypoints,
                              int nfeatures, double scaleFactor,
-                             int edgeThreshold, int patchSize, int scoreType,
+                             int edgeThreshold, int patchSize, ORB::ScoreType scoreType,
                              bool useOCL, int fastThreshold  )
 {
 #ifndef HAVE_OPENCL
@@ -1195,7 +1195,7 @@ void ORB_Impl::detectAndCompute( InputArray _image, InputArray _mask,
 }
 
 Ptr<ORB> ORB::create(int nfeatures, float scaleFactor, int nlevels, int edgeThreshold,
-           int firstLevel, int wta_k, int scoreType, int patchSize, int fastThreshold)
+           int firstLevel, int wta_k, ORB::ScoreType scoreType, int patchSize, int fastThreshold)
 {
     CV_Assert(firstLevel >= 0);
     return makePtr<ORB_Impl>(nfeatures, scaleFactor, nlevels, edgeThreshold,
diff --git a/modules/features2d/test/test_agast.cpp b/modules/features2d/test/test_agast.cpp
index 9bb15390f0..64fa750714 100644
--- a/modules/features2d/test/test_agast.cpp
+++ b/modules/features2d/test/test_agast.cpp
@@ -75,8 +75,8 @@ void CV_AgastTest::run( int )
 
     vector<KeyPoint> keypoints1;
     vector<KeyPoint> keypoints2;
-    AGAST(gray1, keypoints1, 30, true, type);
-    AGAST(gray2, keypoints2, (type > 0 ? 30 : 20), true, type);
+    AGAST(gray1, keypoints1, 30, true, static_cast<AgastFeatureDetector::DetectorType>(type));
+    AGAST(gray2, keypoints2, (type > 0 ? 30 : 20), true, static_cast<AgastFeatureDetector::DetectorType>(type));
 
     for(size_t i = 0; i < keypoints1.size(); ++i)
     {
diff --git a/modules/features2d/test/test_fast.cpp b/modules/features2d/test/test_fast.cpp
index 05741f507a..2fc5602be5 100644
--- a/modules/features2d/test/test_fast.cpp
+++ b/modules/features2d/test/test_fast.cpp
@@ -75,8 +75,8 @@ void CV_FastTest::run( int )
 
     vector<KeyPoint> keypoints1;
     vector<KeyPoint> keypoints2;
-    FAST(gray1, keypoints1, 30, true, type);
-    FAST(gray2, keypoints2, (type > 0 ? 30 : 20), true, type);
+    FAST(gray1, keypoints1, 30, true, static_cast<FastFeatureDetector::DetectorType>(type));
+    FAST(gray2, keypoints2, (type > 0 ? 30 : 20), true, static_cast<FastFeatureDetector::DetectorType>(type));
 
     for(size_t i = 0; i < keypoints1.size(); ++i)
     {
diff --git a/modules/features2d/test/test_orb.cpp b/modules/features2d/test/test_orb.cpp
index 01d1746863..868bee354c 100644
--- a/modules/features2d/test/test_orb.cpp
+++ b/modules/features2d/test/test_orb.cpp
@@ -100,7 +100,7 @@ TEST(Features2D_ORB, crash)
     int edgeThreshold = 4;
     int firstLevel = 0;
     int WTA_K = 2;
-    int scoreType = cv::ORB::HARRIS_SCORE;
+    ORB::ScoreType scoreType = cv::ORB::HARRIS_SCORE;
     int patchSize = 47;
     int fastThreshold = 20;
 
diff --git a/modules/objdetect/include/opencv2/objdetect.hpp b/modules/objdetect/include/opencv2/objdetect.hpp
index f0396d976b..59af3f919e 100644
--- a/modules/objdetect/include/opencv2/objdetect.hpp
+++ b/modules/objdetect/include/opencv2/objdetect.hpp
@@ -372,10 +372,12 @@ http://www.learnopencv.com/handwritten-digits-classification-an-opencv-c-python-
 struct CV_EXPORTS_W HOGDescriptor
 {
 public:
-    enum { L2Hys = 0 //!< Default histogramNormType
+    enum HistogramNormType { L2Hys = 0 //!< Default histogramNormType
          };
     enum { DEFAULT_NLEVELS = 64 //!< Default nlevels value.
          };
+    enum DescriptorStorageFormat { DESCR_FORMAT_COL_BY_COL, DESCR_FORMAT_ROW_BY_ROW };
+
     /**@brief Creates the HOG descriptor and detector with default params.
 
     aqual to HOGDescriptor(Size(64,128), Size(16,16), Size(8,8), Size(8,8), 9, 1 )
@@ -402,7 +404,7 @@ public:
     */
     CV_WRAP HOGDescriptor(Size _winSize, Size _blockSize, Size _blockStride,
                   Size _cellSize, int _nbins, int _derivAperture=1, double _winSigma=-1,
-                  int _histogramNormType=HOGDescriptor::L2Hys,
+                  HOGDescriptor::HistogramNormType _histogramNormType=HOGDescriptor::L2Hys,
                   double _L2HysThreshold=0.2, bool _gammaCorrection=false,
                   int _nlevels=HOGDescriptor::DEFAULT_NLEVELS, bool _signedGradient=false)
     : winSize(_winSize), blockSize(_blockSize), blockStride(_blockStride), cellSize(_cellSize),
@@ -603,7 +605,7 @@ public:
     CV_PROP double winSigma;
 
     //! histogramNormType
-    CV_PROP int histogramNormType;
+    CV_PROP HOGDescriptor::HistogramNormType histogramNormType;
 
     //! L2-Hys normalization method shrinkage.
     CV_PROP double L2HysThreshold;
diff --git a/modules/objdetect/misc/python/pyopencv_objdetect.hpp b/modules/objdetect/misc/python/pyopencv_objdetect.hpp
new file mode 100644
index 0000000000..3d09ae16bf
--- /dev/null
+++ b/modules/objdetect/misc/python/pyopencv_objdetect.hpp
@@ -0,0 +1,13 @@
+#ifdef HAVE_OPENCV_OBJDETECT
+
+#include "opencv2/objdetect.hpp"
+
+typedef HOGDescriptor::HistogramNormType HOGDescriptor_HistogramNormType;
+typedef HOGDescriptor::DescriptorStorageFormat HOGDescriptor_DescriptorStorageFormat;
+
+CV_PY_FROM_ENUM(HOGDescriptor::HistogramNormType);
+CV_PY_TO_ENUM(HOGDescriptor::HistogramNormType);
+CV_PY_FROM_ENUM(HOGDescriptor::DescriptorStorageFormat);
+CV_PY_TO_ENUM(HOGDescriptor::DescriptorStorageFormat);
+
+#endif
diff --git a/modules/objdetect/src/hog.cpp b/modules/objdetect/src/hog.cpp
index 3060d61fbf..aec2febaa2 100644
--- a/modules/objdetect/src/hog.cpp
+++ b/modules/objdetect/src/hog.cpp
@@ -63,8 +63,6 @@ namespace cv
 
 #define NTHREADS 256
 
-enum {DESCR_FORMAT_COL_BY_COL, DESCR_FORMAT_ROW_BY_ROW};
-
 static int numPartsWithin(int size, int part_size, int stride)
 {
     return (size - part_size + stride) / stride;
@@ -1515,7 +1513,7 @@ static bool ocl_extract_descrs_by_cols(int win_height, int win_width, int block_
     return k.run(2, globalThreads, localThreads, false);
 }
 
-static bool ocl_compute(InputArray _img, Size win_stride, std::vector<float>& _descriptors, int descr_format, Size blockSize,
+static bool ocl_compute(InputArray _img, Size win_stride, std::vector<float>& _descriptors, HOGDescriptor::DescriptorStorageFormat descr_format, Size blockSize,
                         Size cellSize, int nbins, Size blockStride, Size winSize, float sigma, bool gammaCorrection, double L2HysThreshold, bool signedGradient)
 {
     Size imgSize = _img.size();
@@ -1564,13 +1562,13 @@ static bool ocl_compute(InputArray _img, Size win_stride, std::vector<float>& _d
     UMat descriptors(wins_per_img.area(), static_cast<int>(blocks_per_win.area() * block_hist_size), CV_32F);
     switch (descr_format)
     {
-    case DESCR_FORMAT_ROW_BY_ROW:
+    case HOGDescriptor::DESCR_FORMAT_ROW_BY_ROW:
         if(!ocl_extract_descrs_by_rows(winSize.height, winSize.width,
             blockStride.height, blockStride.width, win_stride.height, win_stride.width, effect_size.height,
             effect_size.width, block_hists, descriptors, (int)block_hist_size, descr_size, descr_width))
             return false;
         break;
-    case DESCR_FORMAT_COL_BY_COL:
+    case HOGDescriptor::DESCR_FORMAT_COL_BY_COL:
         if(!ocl_extract_descrs_by_cols(winSize.height, winSize.width,
             blockStride.height, blockStride.width, win_stride.height, win_stride.width, effect_size.height, effect_size.width,
             block_hists, descriptors, (int)block_hist_size, descr_size, blocks_per_win.width, blocks_per_win.height))
@@ -1602,7 +1600,7 @@ void HOGDescriptor::compute(InputArray _img, std::vector<float>& descriptors,
     Size paddedImgSize(imgSize.width + padding.width*2, imgSize.height + padding.height*2);
 
     CV_OCL_RUN(_img.dims() <= 2 && _img.type() == CV_8UC1 && _img.isUMat(),
-        ocl_compute(_img, winStride, descriptors, DESCR_FORMAT_COL_BY_COL, blockSize,
+        ocl_compute(_img, winStride, descriptors, HOGDescriptor::DESCR_FORMAT_COL_BY_COL, blockSize,
         cellSize, nbins, blockStride, winSize, (float)getWinSigma(), gammaCorrection, L2HysThreshold, signedGradient))
 
     Mat img = _img.getMat();
diff --git a/modules/python/src2/cv2.cpp b/modules/python/src2/cv2.cpp
index 2c5124fcf4..5ae963a94f 100644
--- a/modules/python/src2/cv2.cpp
+++ b/modules/python/src2/cv2.cpp
@@ -252,7 +252,7 @@ public:
         return u;
     }
 
-    UMatData* allocate(int dims0, const int* sizes, int type, void* data, size_t* step, int flags, UMatUsageFlags usageFlags) const CV_OVERRIDE
+    UMatData* allocate(int dims0, const int* sizes, int type, void* data, size_t* step, AccessFlag flags, UMatUsageFlags usageFlags) const CV_OVERRIDE
     {
         if( data != 0 )
         {
@@ -281,7 +281,7 @@ public:
         return allocate(o, dims0, sizes, type, step);
     }
 
-    bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const CV_OVERRIDE
+    bool allocate(UMatData* u, AccessFlag accessFlags, UMatUsageFlags usageFlags) const CV_OVERRIDE
     {
         return stdAllocator->allocate(u, accessFlags, usageFlags);
     }
diff --git a/modules/stitching/include/opencv2/stitching/detail/matchers.hpp b/modules/stitching/include/opencv2/stitching/detail/matchers.hpp
index 25c0f2ab1e..5c0123833f 100644
--- a/modules/stitching/include/opencv2/stitching/detail/matchers.hpp
+++ b/modules/stitching/include/opencv2/stitching/detail/matchers.hpp
@@ -175,13 +175,13 @@ private:
 class CV_EXPORTS AKAZEFeaturesFinder : public detail::FeaturesFinder
 {
 public:
-    AKAZEFeaturesFinder(int descriptor_type = AKAZE::DESCRIPTOR_MLDB,
+    AKAZEFeaturesFinder(AKAZE::DescriptorType descriptor_type = AKAZE::DESCRIPTOR_MLDB,
                         int descriptor_size = 0,
                         int descriptor_channels = 3,
                         float threshold = 0.001f,
                         int nOctaves = 4,
                         int nOctaveLayers = 4,
-                        int diffusivity = KAZE::DIFF_PM_G2);
+                        KAZE::DiffusivityType diffusivity = KAZE::DIFF_PM_G2);
 
 private:
     void find(InputArray image, ImageFeatures &features) CV_OVERRIDE;
diff --git a/modules/stitching/src/matchers.cpp b/modules/stitching/src/matchers.cpp
index 5fa32ae2f1..6d583c8a6a 100644
--- a/modules/stitching/src/matchers.cpp
+++ b/modules/stitching/src/matchers.cpp
@@ -576,13 +576,13 @@ void OrbFeaturesFinder::find(InputArray image, ImageFeatures &features)
     }
 }
 
-AKAZEFeaturesFinder::AKAZEFeaturesFinder(int descriptor_type,
+AKAZEFeaturesFinder::AKAZEFeaturesFinder(AKAZE::DescriptorType descriptor_type,
                                          int descriptor_size,
                                          int descriptor_channels,
                                          float threshold,
                                          int nOctaves,
                                          int nOctaveLayers,
-                                         int diffusivity)
+                                         KAZE::DiffusivityType diffusivity)
 {
     akaze = AKAZE::create(descriptor_type, descriptor_size, descriptor_channels,
                           threshold, nOctaves, nOctaveLayers, diffusivity);
diff --git a/modules/ts/include/opencv2/ts.hpp b/modules/ts/include/opencv2/ts.hpp
index da9cfca873..be08238336 100644
--- a/modules/ts/include/opencv2/ts.hpp
+++ b/modules/ts/include/opencv2/ts.hpp
@@ -184,7 +184,7 @@ double getMaxVal(int depth);
 
 Size randomSize(RNG& rng, double maxSizeLog);
 void randomSize(RNG& rng, int minDims, int maxDims, double maxSizeLog, vector<int>& sz);
-int randomType(RNG& rng, int typeMask, int minChannels, int maxChannels);
+int randomType(RNG& rng, cv::_OutputArray::DepthMask typeMask, int minChannels, int maxChannels);
 Mat randomMat(RNG& rng, Size size, int type, double minVal, double maxVal, bool useRoi);
 Mat randomMat(RNG& rng, const vector<int>& size, int type, double minVal, double maxVal, bool useRoi);
 void add(const Mat& a, double alpha, const Mat& b, double beta,
diff --git a/modules/ts/src/ts_func.cpp b/modules/ts/src/ts_func.cpp
index 3b9e0198f2..c404759fd4 100644
--- a/modules/ts/src/ts_func.cpp
+++ b/modules/ts/src/ts_func.cpp
@@ -68,7 +68,7 @@ void randomSize(RNG& rng, int minDims, int maxDims, double maxSizeLog, vector<in
     }
 }
 
-int randomType(RNG& rng, int typeMask, int minChannels, int maxChannels)
+int randomType(RNG& rng, _OutputArray::DepthMask typeMask, int minChannels, int maxChannels)
 {
     int channels = rng.uniform(minChannels, maxChannels+1);
     int depth = 0;
diff --git a/modules/video/src/lkpyramid.cpp b/modules/video/src/lkpyramid.cpp
index 6d297d5e70..b61163639e 100644
--- a/modules/video/src/lkpyramid.cpp
+++ b/modules/video/src/lkpyramid.cpp
@@ -704,7 +704,7 @@ int cv::buildOpticalFlowPyramid(InputArray _img, OutputArrayOfArrays pyramid, Si
     CV_Assert(img.depth() == CV_8U && winSize.width > 2 && winSize.height > 2 );
     int pyrstep = withDerivatives ? 2 : 1;
 
-    pyramid.create(1, (maxLevel + 1) * pyrstep, 0 /*type*/, -1, true, 0);
+    pyramid.create(1, (maxLevel + 1) * pyrstep, 0 /*type*/, -1, true);
 
     int derivType = CV_MAKETYPE(DataType<cv::detail::deriv_type>::depth, img.channels() * 2);
 
@@ -783,7 +783,7 @@ int cv::buildOpticalFlowPyramid(InputArray _img, OutputArrayOfArrays pyramid, Si
         sz = Size((sz.width+1)/2, (sz.height+1)/2);
         if( sz.width <= winSize.width || sz.height <= winSize.height )
         {
-            pyramid.create(1, (level + 1) * pyrstep, 0 /*type*/, -1, true, 0);//check this
+            pyramid.create(1, (level + 1) * pyrstep, 0 /*type*/, -1, true);//check this
             return level;
         }