1. type在modules/core/include/opencv2/core/hal/interface.h中定义
define CV_CN_MAX 512
define CV_CN_SHIFT 3
define CV_DEPTH_MAX (1 << CV_CN_SHIFT)
define CV_8U 0
define CV_8S 1
define CV_16U 2
define CV_16S 3
define CV_32S 4
define CV_32F 5
define CV_64F 6
define CV_USRTYPE1 7
define CV_MAT_DEPTH_MASK (CV_DEPTH_MAX - 1)
2.头文件
opencv3.0以上rectangle在opencv2/imgproc.hpp中，以前版本在opencv2/highgui/highgui.hpp
