CV_SEQ_KIND_BIN_TREE 1454 modules/core/include/opencv2/core/types_c.h #define CV_SEQ_POLYGON_TREE    (CV_SEQ_KIND_BIN_TREE  | CV_SEQ_ELTYPE_TRIAN_ATR)
CV_SEQ_KIND_BIN_TREE 1499 modules/core/include/opencv2/core/types_c.h     CV_SEQ_KIND( seq ) ==  CV_SEQ_KIND_BIN_TREE )