cvCalcOpticalFlowPyrLK 73 modules/video/include/opencv2/video/tracking_c.h CVAPI(void) cvCalcOpticalFlowPyrLK( const CvArr* prev, const CvArr* curr, cvCalcOpticalFlowPyrLK 146 modules/video/test/test_optflowpyrlk.cpp cvCalcOpticalFlowPyrLK( &imgI, &imgJ, 0, 0, u, v2, n, cvSize( 41, 41 ),