modified BackgroundSubtractorMOG2::getBackgroundImage so that it can now work with gray-level images.
Merge branch '2.4' of git://github.com/Itseez/opencv into mog2_bgimg_gray
made a performance improvement.
changed the way the mean value for each pixel is assigned in the output image.
Autotuned_index now prints all info into logger instead of couting it.
Bugfix #3668 in FilterEngine::apply(), use the ROI properly
WinRT core compatibility fixes

Update system.cpp

Update system.cpp

Update system.cpp

Update matching.cpp

Update matching.cpp
Bugfix #3668 removed the comment
add suggestion of feature 2619
highgui: fix segfault on CvCapture_GStreamer::retrieveFrame

CvCapture_GStreamer::retrieveFrame assumes that RGB videos are 24BPP.
This is not necesarily the case, unless we explicitly tell GStreamer
that we want 24BPP RGB streams.

Adding bpp=(int)24 to the appsink caps.
Merge pull request #2717 from StevenPuttemans:2.4
Fix non-Android cross compilation with OpenCVConfig.cmake
fixed bug 3484
fix bug 3252
bug 2740 added fix
fix bug 3434
fixed bug 2626
Merge pull request #2721 from zarrabeitia:2.4
Merge pull request #2714 from asmorkalov:ocv_cmake_config
Changed ostringstream to ostream for new print_params and added the old
version of print_params for backwards compatibility.
fix OpenCVConfig.cmake template - missing parentheses