Merge remote-tracking branch 'upstream/3.4' into merge-3.4

This commit is contained in:
Alexander Alekhin
2019-02-12 17:27:44 +03:00
16 changed files with 676 additions and 415 deletions
@@ -77,7 +77,7 @@ by the @ref cv::VideoCapture::read or the overloaded \>\> operator:
@code{.cpp}
Mat frameReference, frameUnderTest;
captRefrnc >> frameReference;
captUndTst.open(frameUnderTest);
captUndTst.read(frameUnderTest);
@endcode
The upper read operations will leave empty the *Mat* objects if no frame could be acquired (either
cause the video stream was closed or you got to the end of the video file). We can check this with a