基于交叉垂直线的摄像机标定新算法

New camera calibration algorithm based on two perpendicular intersect lines

提出了一种基于交叉垂直直线的摄像机标定算法。利用两条垂直相交的直线作为标定物,令其绕交叉点作任意角度的转动,将摄像机固定拍摄6幅以上的图片,即可运用直线的特点以及交叉垂直的约束条件建立线性方程组,求解摄像机的内参数。实验证明该算法具有较高的精度和较好的鲁棒性。

A new camera calibration algorithm was presented. In the method, two vertical across lines were used as the calibration object. The intersect point of the two lines was set to be fixed and the calibration object was rotated about the fixed point freely. By taking 6 pictures （ at least） of the ratating object at a fixed camera view position and direction, a set of linear equations could be set up using the property of perpendicular lines. Thus, a camera intrinsic matrix was obtained by solving these equations. Experiments show that this method is robust and has high resolution.