Merged the trunk r8384:8407 (inclusive)

cmake/OpenCVCompilerOptions.cmake

+if(MINGW)
+  # mingw compiler is known to produce unstable SSE code with -O3 hence we are trying to use -O2 instead
+  if(CMAKE_COMPILER_IS_GNUCXX)
+    foreach(flags CMAKE_CXX_FLAGS CMAKE_CXX_FLAGS_RELEASE CMAKE_CXX_FLAGS_DEBUG)
+      string(REPLACE "-O3" "-O2" ${flags} "${${flags}}")
+    endforeach()
+  endif()
+
+  if(CMAKE_COMPILER_IS_GNUCC)
+    foreach(flags CMAKE_C_FLAGS CMAKE_C_FLAGS_RELEASE CMAKE_C_FLAGS_DEBUG)
+      string(REPLACE "-O3" "-O2" ${flags} "${${flags}}")
+    endforeach()
+  endif()
+endif()
+
 if(MSVC)
   if(CMAKE_CXX_FLAGS STREQUAL CMAKE_CXX_FLAGS_INIT)
     # override cmake default exception handling option
@@ -14,18 +29,18 @@ set(OPENCV_EXTRA_EXE_LINKER_FLAGS_RELEASE "")
 set(OPENCV_EXTRA_EXE_LINKER_FLAGS_DEBUG "")
 
 if(MINGW)
-  # mingw compiler is known to produce unstable SSE code
+  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40838
   # here we are trying to workaround the problem
   include(CheckCXXCompilerFlag)
-  CHECK_CXX_COMPILER_FLAG(-mstackrealign HAVE_STACKREALIGN_FLAG)
-  if(HAVE_STACKREALIGN_FLAG)
-    set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -mstackrealign")
-  else()
+#  CHECK_CXX_COMPILER_FLAG(-mstackrealign HAVE_STACKREALIGN_FLAG)
+ # if(HAVE_STACKREALIGN_FLAG)
+  #  set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -mstackrealign")
+  #else()
     CHECK_CXX_COMPILER_FLAG(-mpreferred-stack-boundary=2 HAVE_PREFERRED_STACKBOUNDARY_FLAG)
     if(HAVE_PREFERRED_STACKBOUNDARY_FLAG)
       set(OPENCV_EXTRA_C_FLAGS "${OPENCV_EXTRA_C_FLAGS} -mstackrealign")
     endif()
-  endif()
+  #endif()
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX)

cmake/OpenCVDetectAndroidSDK.cmake

@@ -8,7 +8,7 @@ file(TO_CMAKE_PATH "$ENV{HOME}" HOME_ENV_PATH)
 if(CMAKE_HOST_WIN32)
   set(ANDROID_SDK_OS windows)
 elseif(CMAKE_HOST_APPLE)
-  set(ANDROID_SDK_OS mac)
+  set(ANDROID_SDK_OS macosx)
 else()
   set(ANDROID_SDK_OS linux)
 endif()

cmake/OpenCVDetectPython.cmake

-if(MSVC AND NOT PYTHON_EXECUTABLE)
+if(WIN32 AND NOT PYTHON_EXECUTABLE)
   # search for executable with the same bitness as resulting binaries
   # standard FindPythonInterp always prefers executable from system path
   # this is really important because we are using the interpreter for numpy search and for choosing the install location

cmake/OpenCVUtils.cmake

@@ -11,7 +11,7 @@ if(NOT COMMAND find_host_program)
   endmacro()
 endif()
 
-#added include directories in such way that directories from the OpenCV source tree go first
+# adds include directories in such way that directories from the OpenCV source tree go first
 function(ocv_include_directories)
   set(__add_before "")
   foreach(dir ${ARGN})
@@ -25,6 +25,12 @@ function(ocv_include_directories)
   include_directories(BEFORE ${__add_before})
 endfunction()
 
+# clears all passed variables
+macro(ocv_clear_vars)
+  foreach(_var ${ARGN})
+    unset(${_var} CACHE)
+  endforeach()
+endmacro()
 
 # Provides an option that the user can optionally select.
 # Can accept condition to control when option is available for user.
@@ -352,10 +358,11 @@ macro(ocv_parse_header2 LIBNAME HDR_PATH VARNAME SCOPE)
       set(${LIBNAME}_VERSION_STRING "${${LIBNAME}_VERSION_STRING}.${${LIBNAME}_VERSION_TWEAK}" ${SCOPE})
     endif()
   else()
-    unset(${LIBNAME}_VERSION_MAJOR CACHE)
-    unset(${LIBNAME}_VERSION_MINOR CACHE)
-    unset(${LIBNAME}_VERSION_PATCH CACHE)
-    unset(${LIBNAME}_VERSION_TWEAK CACHE)
-    unset(${LIBNAME}_VERSION_STRING CACHE)
+    ocv_clear_vars(${LIBNAME}_VERSION_MAJOR
+                   ${LIBNAME}_VERSION_MAJOR
+                   ${LIBNAME}_VERSION_MINOR
+                   ${LIBNAME}_VERSION_PATCH
+                   ${LIBNAME}_VERSION_TWEAK
+                   ${LIBNAME}_VERSION_STRING)
   endif()
 endmacro()

modules/contrib/src/detection_based_tracker.cpp

@@ -107,12 +107,15 @@ class DetectionBasedTracker::SeparateDetectionWork
 
 DetectionBasedTracker::SeparateDetectionWork::SeparateDetectionWork(DetectionBasedTracker& _detectionBasedTracker, const std::string& cascadeFilename)
     :detectionBasedTracker(_detectionBasedTracker),
-    cascadeInThread(cascadeFilename),
+    cascadeInThread(),
     isObjectDetectingReady(false),
     shouldObjectDetectingResultsBeForgot(false),
     stateThread(STATE_THREAD_STOPPED),
     timeWhenDetectingThreadStartedWork(-1)
 {
+    if(!cascadeInThread.load(cascadeFilename)) {
+        CV_Error(CV_StsBadArg, "DetectionBasedTracker::SeparateDetectionWork::SeparateDetectionWork: Cannot load a cascade from the file '"+cascadeFilename+"'");
+    }
     int res=0;
     res=pthread_mutex_init(&mutex, NULL);//TODO: should be attributes?
     if (res) {
@@ -439,14 +442,17 @@ DetectionBasedTracker::InnerParameters::InnerParameters()
 DetectionBasedTracker::DetectionBasedTracker(const std::string& cascadeFilename, const Parameters& params)
     :separateDetectionWork(),
     innerParameters(),
-    numTrackedSteps(0),
-    cascadeForTracking(cascadeFilename)
+    numTrackedSteps(0)
 {
     CV_Assert( (params.minObjectSize > 0)
             && (params.maxObjectSize >= 0)
             && (params.scaleFactor > 1.0)
             && (params.maxTrackLifetime >= 0) );
 
+    if (!cascadeForTracking.load(cascadeFilename)) {        
+        CV_Error(CV_StsBadArg, "DetectionBasedTracker::DetectionBasedTracker: Cannot load a cascade from the file '"+cascadeFilename+"'");
+    }
+
     parameters=params;
 
     separateDetectionWork=new SeparateDetectionWork(*this, cascadeFilename);

modules/core/include/opencv2/core/internal.hpp

@@ -233,6 +233,34 @@ CV_INLINE IppiSize ippiSize(int width, int height)
         
     }
 #endif
+
+    #define CV_INIT_ALGORITHM(classname, algname, memberinit) \
+    static Algorithm* create##classname() \
+    { \
+        return new classname; \
+    } \
+    \
+    static AlgorithmInfo& classname##_info() \
+    { \
+        static AlgorithmInfo classname##_info_var(algname, create##classname); \
+        return classname##_info_var; \
+    } \
+    \
+    static AlgorithmInfo& classname##_info_auto = classname##_info(); \
+    \
+    AlgorithmInfo* classname::info() const \
+    { \
+        static volatile bool initialized = false; \
+        \
+        if( !initialized ) \
+        { \
+            initialized = true; \
+            classname obj; \
+            memberinit; \
+        } \
+        return &classname##_info(); \
+    }
+
 #endif
 
 /* maximal size of vector to run matrix operations on it inline (i.e. w/o ipp calls) */

modules/core/include/opencv2/core/mat.hpp

@@ -322,7 +322,10 @@ inline Mat Mat::diag(const Mat& d)
     CV_Assert( d.cols == 1 || d.rows == 1 );
     int len = d.rows + d.cols - 1;
     Mat m(len, len, d.type(), Scalar(0)), md = m.diag();
-    d.copyTo(md);
+    if( d.cols == 1 )
+        d.copyTo(md);
+    else
+        transpose(d, md);
     return m;
 }
 

modules/highgui/src/window_w32.cpp

@@ -48,6 +48,10 @@
 #endif
 
 #define COMPILE_MULTIMON_STUBS // Required for multi-monitor support
+#ifndef _MULTIMON_USE_SECURE_CRT
+#  define _MULTIMON_USE_SECURE_CRT 0 // some MinGW platforms have no strncpy_s
+#endif
+
 #if defined SM_CMONITORS && !defined MONITOR_DEFAULTTONEAREST
 #  define MONITOR_DEFAULTTONULL       0x00000000
 #  define MONITOR_DEFAULTTOPRIMARY    0x00000001
@@ -974,6 +978,11 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
     DWORD defStyle = WS_VISIBLE | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU;
     int len;
     CvRect rect;
+#ifdef HAVE_OPENGL
+    bool useGl;
+    HDC hGLDC;
+    HGLRC hGLRC;
+#endif
 
     cvInitSystem(0,0);
 
@@ -1009,9 +1018,9 @@ CV_IMPL int cvNamedWindow( const char* name, int flags )
     if (flags & CV_WINDOW_OPENGL)
         CV_ERROR( CV_OpenGlNotSupported, "Library was built without OpenGL support" );
 #else
-    bool useGl = false;
-    HDC hGLDC = 0;
-    HGLRC hGLRC = 0;
+    useGl = false;
+    hGLDC = 0;
+    hGLRC = 0;
 
     if (flags & CV_WINDOW_OPENGL)
         createGlContext(hWnd, hGLDC, hGLRC, useGl);

modules/imgproc/src/utils.cpp

@@ -224,7 +224,7 @@ void cv::copyMakeBorder( InputArray _src, OutputArray _dst, int top, int bottom,
 
     if(top == 0 && left == 0 && bottom == 0 && right == 0)
     {
-        if(src.data != dst.data)
+        if(src.data != dst.data || src.step != dst.step)
             src.copyTo(dst);
         return;
     }

modules/ml/src/ml_init.cpp

@@ -45,31 +45,14 @@
 namespace cv
 {
 
-static Algorithm* createEM()
-{
-    return new EM;
-}
-static AlgorithmInfo em_info("StatModel.EM", createEM);
-
-AlgorithmInfo* EM::info() const
-{
-    static volatile bool initialized = false;
-    if( !initialized )
-    {
-        EM obj;
-        em_info.addParam(obj, "nclusters", obj.nclusters);
-        em_info.addParam(obj, "covMatType", obj.covMatType);
-        em_info.addParam(obj, "maxIters", obj.maxIters);
-        em_info.addParam(obj, "epsilon", obj.epsilon);
-
-        em_info.addParam(obj, "weights", obj.weights, true);
-        em_info.addParam(obj, "means", obj.means, true);
-        em_info.addParam(obj, "covs", obj.covs, true);
-
-        initialized = true;
-    }
-    return &em_info;
-}
+CV_INIT_ALGORITHM(EM, "StatModel.EM",
+                  obj.info()->addParam(obj, "nclusters", obj.nclusters);
+                  obj.info()->addParam(obj, "covMatType", obj.covMatType);
+                  obj.info()->addParam(obj, "maxIters", obj.maxIters);
+                  obj.info()->addParam(obj, "epsilon", obj.epsilon);
+                  obj.info()->addParam(obj, "weights", obj.weights, true);
+                  obj.info()->addParam(obj, "means", obj.means, true);
+                  obj.info()->addParam(obj, "covs", obj.covs, true));
 
 bool initModule_ml(void)
 {

modules/nonfree/src/nonfree_init.cpp

@@ -46,65 +46,22 @@ namespace cv
 {
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////
-    
-static Algorithm* createSURF()
-{
-    return new SURF;
-}
-
-static AlgorithmInfo& surf_info()
-{
-    static AlgorithmInfo surf_info_var("Feature2D.SURF", createSURF);
-    return surf_info_var;
-}
 
-static AlgorithmInfo& surf_info_auto = surf_info();
-
-AlgorithmInfo* SURF::info() const
-{
-    static volatile bool initialized = false;
-    if( !initialized )
-    {
-        SURF obj;
-        surf_info().addParam(obj, "hessianThreshold", obj.hessianThreshold);
-        surf_info().addParam(obj, "nOctaves", obj.nOctaves);
-        surf_info().addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
-        surf_info().addParam(obj, "extended", obj.extended);
-        surf_info().addParam(obj, "upright", obj.upright);
-        
-        initialized = true;
-    }
-    return &surf_info();
-}
+CV_INIT_ALGORITHM(SURF, "Feature2D.SURF",
+                  obj.info()->addParam(obj, "hessianThreshold", obj.hessianThreshold);
+                  obj.info()->addParam(obj, "nOctaves", obj.nOctaves);
+                  obj.info()->addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
+                  obj.info()->addParam(obj, "extended", obj.extended);
+                  obj.info()->addParam(obj, "upright", obj.upright));
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-static Algorithm* createSIFT() { return new SIFT; }
-
-static AlgorithmInfo& sift_info()
-{
-    static AlgorithmInfo sift_info_var("Feature2D.SIFT", createSIFT);
-    return sift_info_var;
-}
-
-static AlgorithmInfo& sift_info_auto = sift_info();
-
-AlgorithmInfo* SIFT::info() const
-{
-    static volatile bool initialized = false;
-    if( !initialized )
-    {
-        SIFT obj;
-        sift_info().addParam(obj, "nFeatures", obj.nfeatures);
-        sift_info().addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
-        sift_info().addParam(obj, "contrastThreshold", obj.contrastThreshold);
-        sift_info().addParam(obj, "edgeThreshold", obj.edgeThreshold);
-        sift_info().addParam(obj, "sigma", obj.sigma);
-        
-        initialized = true;
-    }
-    return &sift_info();
-}
+CV_INIT_ALGORITHM(SIFT, "Feature2D.SIFT",    
+                  obj.info()->addParam(obj, "nFeatures", obj.nfeatures);
+                  obj.info()->addParam(obj, "nOctaveLayers", obj.nOctaveLayers);
+                  obj.info()->addParam(obj, "contrastThreshold", obj.contrastThreshold);
+                  obj.info()->addParam(obj, "edgeThreshold", obj.edgeThreshold);
+                  obj.info()->addParam(obj, "sigma", obj.sigma));
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////    
     

modules/video/include/opencv2/video/tracking.hpp

@@ -304,7 +304,7 @@ enum
 };
 
 //! constructs a pyramid which can be used as input for calcOpticalFlowPyrLK
-CV_EXPORTS_W int buildOpticalFlowPyramid(InputArray _img, OutputArrayOfArrays pyramid,
+CV_EXPORTS_W int buildOpticalFlowPyramid(InputArray img, OutputArrayOfArrays pyramid,
                                          Size winSize, int maxLevel, bool withDerivatives = true,
                                          int pyrBorder = BORDER_REFLECT_101, int derivBorder = BORDER_CONSTANT,
                                          bool tryReuseInputImage = true);

modules/video/perf/perf_optflowpyrlk.cpp

@@ -28,12 +28,12 @@ void FormTrackingPointsArray(vector<Point2f>& points, int width, int height, int
     }
 }
 
-PERF_TEST_P(Path_Idx_Cn_NPoints_WSize, OpticalFlowPyrLK, testing::Combine(
+PERF_TEST_P(Path_Idx_Cn_NPoints_WSize, OpticalFlowPyrLK_full, testing::Combine(
                 testing::Values<std::string>("cv/optflow/frames/VGA_%02d.png", "cv/optflow/frames/720p_%02d.jpg"),
-                testing::Range(0, 3),
+                testing::Range(1, 3),
                 testing::Values(1, 3, 4),
                 testing::Values(make_tuple(9, 9), make_tuple(15, 15)),
-                testing::Values(7, 11, 21, 25)
+                testing::Values(7, 11, 25)
                 )
             )
 {
@@ -48,6 +48,7 @@ PERF_TEST_P(Path_Idx_Cn_NPoints_WSize, OpticalFlowPyrLK, testing::Combine(
     int nPointsX = min(get<0>(get<3>(GetParam())), img1.cols);
     int nPointsY = min(get<1>(get<3>(GetParam())), img1.rows);
     int winSize = get<4>(GetParam());
+
     int maxLevel = 2;
     TermCriteria criteria(CV_TERMCRIT_ITER|CV_TERMCRIT_EPS, 7, 0.001);
     int flags = 0;
@@ -91,3 +92,120 @@ PERF_TEST_P(Path_Idx_Cn_NPoints_WSize, OpticalFlowPyrLK, testing::Combine(
                              flags, minEigThreshold);
     }
 }
+
+typedef tr1::tuple<std::string, int, int, tr1::tuple<int,int>, int, bool> Path_Idx_Cn_NPoints_WSize_Deriv_t;
+typedef TestBaseWithParam<Path_Idx_Cn_NPoints_WSize_Deriv_t> Path_Idx_Cn_NPoints_WSize_Deriv;
+
+PERF_TEST_P(Path_Idx_Cn_NPoints_WSize_Deriv, OpticalFlowPyrLK_self, testing::Combine(
+                testing::Values<std::string>("cv/optflow/frames/VGA_%02d.png", "cv/optflow/frames/720p_%02d.jpg"),
+                testing::Range(1, 3),
+                testing::Values(1, 3, 4),
+                testing::Values(make_tuple(9, 9), make_tuple(15, 15)),
+                testing::Values(7, 11, 25),
+                testing::Bool()
+                )
+            )
+{
+    string filename1 = getDataPath(cv::format(get<0>(GetParam()).c_str(), get<1>(GetParam())));
+    string filename2 = getDataPath(cv::format(get<0>(GetParam()).c_str(), get<1>(GetParam()) + 1));
+    Mat img1 = imread(filename1);
+    Mat img2 = imread(filename2);
+    if (img1.empty()) FAIL() << "Unable to load source image " << filename1;
+    if (img2.empty()) FAIL() << "Unable to load source image " << filename2;
+
+    int cn = get<2>(GetParam());
+    int nPointsX = min(get<0>(get<3>(GetParam())), img1.cols);
+    int nPointsY = min(get<1>(get<3>(GetParam())), img1.rows);
+    int winSize = get<4>(GetParam());
+    bool withDerivatives = get<5>(GetParam());
+
+    int maxLevel = 2;
+    TermCriteria criteria(CV_TERMCRIT_ITER|CV_TERMCRIT_EPS, 7, 0.001);
+    int flags = 0;
+    double minEigThreshold = 1e-4;
+
+    Mat frame1, frame2;
+    switch(cn)
+    {
+    case 1:
+        cvtColor(img1, frame1, COLOR_BGR2GRAY, cn);
+        cvtColor(img2, frame2, COLOR_BGR2GRAY, cn);
+        break;
+    case 3:
+        frame1 = img1;
+        frame2 = img2;
+        break;
+    case 4:
+        cvtColor(img1, frame1, COLOR_BGR2BGRA, cn);
+        cvtColor(img2, frame2, COLOR_BGR2BGRA, cn);
+        break;
+    default:
+        FAIL() << "Unexpected number of channels: " << cn;
+    }
+
+    vector<Point2f> inPoints;
+    vector<Point2f> outPoints;
+    vector<uchar> status;
+    vector<float> err;
+
+    FormTrackingPointsArray(inPoints, frame1.cols, frame1.rows, nPointsX, nPointsY);
+    outPoints.resize(inPoints.size());
+    status.resize(inPoints.size());
+    err.resize(inPoints.size());
+
+    std::vector<Mat> pyramid1, pyramid2;
+
+    maxLevel = buildOpticalFlowPyramid(frame1, pyramid1, Size(winSize, winSize), maxLevel, withDerivatives);
+    maxLevel = buildOpticalFlowPyramid(frame2, pyramid2, Size(winSize, winSize), maxLevel, withDerivatives);
+
+    declare.in(pyramid1, pyramid2, inPoints).out(outPoints);
+
+    TEST_CYCLE()
+    {
+        calcOpticalFlowPyrLK(pyramid1, pyramid2, inPoints, outPoints, status, err,
+                             Size(winSize, winSize), maxLevel, criteria,
+                             flags, minEigThreshold);
+    }
+}
+
+CV_ENUM(PyrBorderMode, BORDER_DEFAULT, BORDER_TRANSPARENT);
+typedef tr1::tuple<std::string, int, bool, PyrBorderMode, bool> Path_Win_Deriv_Border_Reuse_t;
+typedef TestBaseWithParam<Path_Win_Deriv_Border_Reuse_t> Path_Win_Deriv_Border_Reuse;
+
+PERF_TEST_P(Path_Win_Deriv_Border_Reuse, OpticalFlowPyrLK_pyr, testing::Combine(
+                testing::Values<std::string>("cv/optflow/frames/720p_01.jpg"),
+                testing::Values(7, 11),
+                testing::Bool(),
+                testing::ValuesIn(PyrBorderMode::all()),
+                testing::Bool()
+                )
+            )
+{
+    string filename = getDataPath(get<0>(GetParam()));
+    Mat img = imread(filename);
+    Size winSize(get<1>(GetParam()), get<1>(GetParam()));
+    bool withDerivatives = get<2>(GetParam());
+    int derivBorder = get<3>(GetParam());
+    int pyrBorder = derivBorder;
+    if(derivBorder != BORDER_TRANSPARENT)
+    {
+        derivBorder = BORDER_CONSTANT;
+        pyrBorder = BORDER_REFLECT_101;
+    }
+    bool tryReuseInputImage = get<4>(GetParam());
+    std::vector<Mat> pyramid;
+
+    img.adjustROI(winSize.height, winSize.height, winSize.width, winSize.width);
+
+    int maxLevel = buildOpticalFlowPyramid(img, pyramid, winSize, 1000, withDerivatives, BORDER_CONSTANT, BORDER_CONSTANT, tryReuseInputImage);
+
+    declare.in(img).out(pyramid);
+
+
+    TEST_CYCLE()
+    {
+        buildOpticalFlowPyramid(img, pyramid, winSize, maxLevel, withDerivatives, pyrBorder, derivBorder, tryReuseInputImage);
+    }
+
+    SANITY_CHECK(pyramid);
+}
\ No newline at end of file

modules/video/src/lkpyramid.hpp

+#pragma once
+
+namespace cv
+{
+namespace detail
+{
+
+    typedef short deriv_type;
+
+    struct LKTrackerInvoker
+    {
+        LKTrackerInvoker( const Mat& _prevImg, const Mat& _prevDeriv, const Mat& _nextImg,
+                          const Point2f* _prevPts, Point2f* _nextPts,
+                          uchar* _status, float* _err,
+                          Size _winSize, TermCriteria _criteria,
+                          int _level, int _maxLevel, int _flags, float _minEigThreshold );
+
+        void operator()(const BlockedRange& range) const;
+
+        const Mat* prevImg;
+        const Mat* nextImg;
+        const Mat* prevDeriv;
+        const Point2f* prevPts;
+        Point2f* nextPts;
+        uchar* status;
+        float* err;
+        Size winSize;
+        TermCriteria criteria;
+        int level;
+        int maxLevel;
+        int flags;
+        float minEigThreshold;
+    };
+
+}// namespace detail
+}// namespace cv
\ No newline at end of file

modules/video/src/video_init.cpp

@@ -47,72 +47,24 @@ namespace cv
     
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-static Algorithm* createMOG()
-{
-    return new BackgroundSubtractorMOG;
-}
-
-static AlgorithmInfo& mog_info()
-{
-    static AlgorithmInfo mog_info_var("BackgroundSubtractor.MOG", createMOG);
-    return mog_info_var;
-}
-
-static AlgorithmInfo& mog_info_auto = mog_info();
-
-AlgorithmInfo* BackgroundSubtractorMOG::info() const
-{
-    static volatile bool initialized = false;
-    if( !initialized )
-    {
-        BackgroundSubtractorMOG obj;
-        
-        mog_info().addParam(obj, "history", obj.history);
-        mog_info().addParam(obj, "nmixtures", obj.nmixtures);
-        mog_info().addParam(obj, "backgroundRatio", obj.backgroundRatio);
-        mog_info().addParam(obj, "noiseSigma", obj.noiseSigma);
-        
-        initialized = true;
-    }
-    return &mog_info();
-}
+CV_INIT_ALGORITHM(BackgroundSubtractorMOG, "BackgroundSubtractor.MOG",
+    obj.info()->addParam(obj, "history", obj.history);
+    obj.info()->addParam(obj, "nmixtures", obj.nmixtures);
+    obj.info()->addParam(obj, "backgroundRatio", obj.backgroundRatio);
+    obj.info()->addParam(obj, "noiseSigma", obj.noiseSigma));
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-static Algorithm* createMOG2()
-{
-    return new BackgroundSubtractorMOG2;
-}
-
-static AlgorithmInfo& mog2_info()
-{
-    static AlgorithmInfo mog2_info_var("BackgroundSubtractor.MOG2", createMOG2);
-    return mog2_info_var;
-}
-
-static AlgorithmInfo& mog2_info_auto = mog2_info();
-
-AlgorithmInfo* BackgroundSubtractorMOG2::info() const
-{
-    static volatile bool initialized = false;
-    if( !initialized )
-    {
-        BackgroundSubtractorMOG2 obj;
-        
-        mog2_info().addParam(obj, "history", obj.history);
-        mog2_info().addParam(obj, "varThreshold", obj.varThreshold);
-        mog2_info().addParam(obj, "detectShadows", obj.bShadowDetection);
-        
-        initialized = true;
-    }
-    return &mog2_info();
-}
+CV_INIT_ALGORITHM(BackgroundSubtractorMOG2, "BackgroundSubtractor.MOG2",
+    obj.info()->addParam(obj, "history", obj.history);
+    obj.info()->addParam(obj, "varThreshold", obj.varThreshold);
+    obj.info()->addParam(obj, "detectShadows", obj.bShadowDetection));
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////    
 
 bool initModule_video(void)
 {
-    Ptr<Algorithm> mog = createMOG(), mog2 = createMOG2();
+    Ptr<Algorithm> mog = createBackgroundSubtractorMOG(), mog2 = createBackgroundSubtractorMOG2();
     return mog->info() != 0 && mog2->info() != 0;
 }
     

samples/cpp/bagofwords_classification.cpp

 #include "opencv2/highgui/highgui.hpp"
 #include "opencv2/imgproc/imgproc.hpp"
 #include "opencv2/features2d/features2d.hpp"
+#include "opencv2/nonfree/nonfree.hpp"
 #include "opencv2/ml/ml.hpp"
 
 #include <fstream>
@@ -2515,6 +2516,8 @@ int main(int argc, char** argv)
         return -1;
     }
 
+    cv::initModule_nonfree();
+
     const string vocPath = argv[1], resPath = argv[2];
 
     // Read or set default parameters

samples/cpp/descriptor_extractor_matcher.cpp

@@ -2,6 +2,7 @@
 #include "opencv2/calib3d/calib3d.hpp"
 #include "opencv2/imgproc/imgproc.hpp"
 #include "opencv2/features2d/features2d.hpp"
+#include "opencv2/nonfree/nonfree.hpp"
 
 #include <iostream>
 
@@ -235,6 +236,9 @@ int main(int argc, char** argv)
     	help(argv);
         return -1;
     }
+
+    cv::initModule_nonfree();
+
     bool isWarpPerspective = argc == 7;
     double ransacReprojThreshold = -1;
     if( !isWarpPerspective )