AGAST_7_12d         9 modules/features2d/perf/perf_agast.cpp enum { AGAST_5_8 = AgastFeatureDetector::AGAST_5_8, AGAST_7_12d = AgastFeatureDetector::AGAST_7_12d,
AGAST_7_12d       816 modules/features2d/src/agast.cpp static void AGAST_7_12d(InputArray _img, std::vector<KeyPoint>& keypoints, int threshold)