OpenCV入门教程01.10：常用函数

OpenCV入门教程06.53：帧差图absdiff()

OpenCV入门教程06.38：goodFeaturesToTrack

OpenCV入门教程03.40：颜色圆检测

OpenCV入门教程06.39：关键点检测-GFTTDetector

OpenCV入门教程03.21：copyMakeBorder()

OpenCV入门教程03.07：击中和击不中

OpenCV入门教程03.05：顶帽和黑帽

OpenCV入门教程03.04：开操作与闭操作

OpenCV入门教程03.03：腐蚀与膨胀