CV_EXPORTS_W_SIMPLE  454 modules/core/include/opencv2/core/persistence.hpp class CV_EXPORTS_W_SIMPLE FileNode
CV_EXPORTS_W_SIMPLE  632 modules/core/include/opencv2/core/types.hpp class CV_EXPORTS_W_SIMPLE KeyPoint
CV_EXPORTS_W_SIMPLE  728 modules/core/include/opencv2/core/types.hpp class CV_EXPORTS_W_SIMPLE DMatch
CV_EXPORTS_W_SIMPLE  522 modules/features2d/include/opencv2/features2d.hpp   struct CV_EXPORTS_W_SIMPLE Params