cvPreCornerDetect  894 modules/imgproc/include/opencv2/imgproc/imgproc_c.h CVAPI(void) cvPreCornerDetect( const CvArr* image, CvArr* corners,
cvPreCornerDetect 1498 modules/imgproc/test/test_filter.cpp     cvPreCornerDetect( test_array[INPUT][0], test_array[OUTPUT][0], aperture_size );