estimateDualVariables  322 modules/video/src/tvl1flow.cpp bool cv_ocl_tvl1flow::estimateDualVariables(UMat &u1, UMat &u2,
estimateDualVariables 1143 modules/video/src/tvl1flow.cpp void estimateDualVariables(const Mat_<float>& u1x, const Mat_<float>& u1y,