一种基于任意点对的相机标定方法

A Camera Calibration Method Based on Arbitrary Point Pairs

提出了一种基于任意点对的几何标定方法,用于标定相机外部参数.该方法考虑点对而不是单个点与相机的几何关系.首先根据三个标定点对估计旋转矩阵,然后根据相机和一个点对的几何关系直接计算平移向量.整个标定过程无需任何点对的绝对位置信息,而且对点对的位置关系也没有任何限制.试验结果表明了该方法的有效性.

This paper presents a simple geometric approach for calibrating extrinsic camera parameters fi＇om arbitrary point pairs. The proposed method considers the geometric relationships between a camera and the point pairs instead of an individual point. It firstly estimates the rotation matrix according to three point pairs, then directly calculates the translation vector from the geometric relationships between the camera and one pair of the points. The whole calibration process doesn＇t need the absolute position information of any point pairs, and it doesn＇t exert any restrictions on the position relationships among the point pairs. Experimental results show the effectiveness of the proposed approach.