Instrumentation for OpenCV API regions and IPP functions;

modules/stitching/src/matchers.cpp

@@ -144,6 +144,8 @@ private:
 
 void CpuMatcher::match(const ImageFeatures &features1, const ImageFeatures &features2, MatchesInfo& matches_info)
 {
+    CV_INSTRUMENT_REGION()
+
     CV_Assert(features1.descriptors.type() == features2.descriptors.type());
     CV_Assert(features2.descriptors.depth() == CV_8U || features2.descriptors.depth() == CV_32F);
 
@@ -212,6 +214,8 @@ void CpuMatcher::match(const ImageFeatures &features1, const ImageFeatures &feat
 #ifdef HAVE_OPENCV_CUDAFEATURES2D
 void GpuMatcher::match(const ImageFeatures &features1, const ImageFeatures &features2, MatchesInfo& matches_info)
 {
+    CV_INSTRUMENT_REGION()
+
     matches_info.matches.clear();
 
     ensureSizeIsEnough(features1.descriptors.size(), features1.descriptors.type(), descriptors1_);
@@ -581,6 +585,8 @@ BestOf2NearestMatcher::BestOf2NearestMatcher(bool try_use_gpu, float match_conf,
 void BestOf2NearestMatcher::match(const ImageFeatures &features1, const ImageFeatures &features2,
                                   MatchesInfo &matches_info)
 {
+    CV_INSTRUMENT_REGION()
+
     (*impl_)(features1, features2, matches_info);
 
     // Check if it makes sense to find homography