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Update video_input_psnr_ssim.markdown

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Oleh 2019-02-11 10:45:16 +02:00 committed by GitHub
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doc/tutorials/videoio/video-input-psnr-ssim/video_input_psnr_ssim.markdown
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@ -77,7 +77,7 @@ by the @ref cv::VideoCapture::read or the overloaded \>\> operator:
@code{.cpp} @code{.cpp}
Mat frameReference, frameUnderTest; Mat frameReference, frameUnderTest;
captRefrnc >> frameReference; captRefrnc >> frameReference;
captUndTst.open(frameUnderTest); captUndTst.read(frameUnderTest);
@endcode @endcode
The upper read operations will leave empty the *Mat* objects if no frame could be acquired (either 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 cause the video stream was closed or you got to the end of the video file). We can check this with a