说明：  本书第 3 版针对 OpenCV 最新版本进行了修改，调整了很多函数和算法说明，还增加立体图像深度检测、运动目标跟踪、人脸识别、人脸定位、行人检测等内容
(In the third edition of this book, the latest version of OpenCV has been modified, many functions and algorithm descriptions have been adjusted, and stereo image depth detection, moving target tracking, face recognition, face location, pedestrian detection and other contents have also been added)