cvGetRectSubPix   391 modules/imgproc/include/opencv2/imgproc/imgproc_c.h CVAPI(void)  cvGetRectSubPix( const CvArr* src, CvArr* dst, CvPoint2D32f center );
cvGetRectSubPix  1203 modules/imgproc/test/test_imgwarp.cpp         cvGetRectSubPix( test_array[INPUT][0], test_array[INPUT_OUTPUT][0], center );