Open Source Computer Vision Library https://opencv.org/

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opencv/modules/video/perf

History

Owen Healy ff48387a8a Fix bug of uninitialized matrix in findTransformECC ... The matrix templateZM needs to be initialized because otherwise uninitialized values leak into the correlation in: const double correlation = templateZM.dot(imageWarped) In the worst case this will lead the correlation to be NaN ruining the whole routine. The subtraction does not initialize templateZM due to the mask. Unfortunately, the uninitialized values (by altering the correlation) have the side effect of dragging out the computation a little longer giving a slightly better error bound. This means that fixing this bug breaks perf_ecc where SANITY_CHECK(warpMat, 1e-3); is just a little too tight and happens to work due to the uninitialized values. Since this is a performance not a accuracy test I think it is OK to just relax the error bound a little bit (the tight error bound being after all the result of a bug).		10 years ago
..
opencl	Remove deprecated methods from cv::Algorithm	10 years ago
perf_ecc.cpp	Fix bug of uninitialized matrix in findTransformECC	10 years ago
perf_main.cpp	merged all the latest changes from 2.4 to trunk	13 years ago
perf_optflowpyrlk.cpp	Merge remote-tracking branch 'origin/2.4' into merge-2.4	11 years ago
perf_precomp.hpp	Extract imgcodecs module from highgui	11 years ago
perf_tvl1optflow.cpp	fixed sanity test on Windows	12 years ago