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 ),