zhangzhenzyou

代码说明：

  目前常用的张正友的摄像机标定方法，对畸变系数增加了切向畸变，结果精度很高，可直接应用于程序中。(Zhang is currently commonly used in the Friends of the camera calibration method, the distortion coefficient increased tangential distortion, resulting in high accuracy can be directly applied to program.)