说明：  最小二乘法线性拟合有着广泛的应用。本人在机器视觉/摄像机标定中求取摄像机内参数是采用了最小二乘法，本人提供的源码也是可靠的。
(Least squares linear regression has been widely used. I am in the machine vision/camera get the camera calibration parameters are used within the least squares method, I provide the source is reliable.)