一种基于点对的相机几何标定方法

A Geometric Approach for Camera Calibration Based on Point Pairs

  • 摘要: 提出了一种基于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计算旋转矩阵且不需要任何点对的精确三维信息.然后根据相机和一个点对的几何关系计算平移且只需这个点对的相对位置是已知的.整个标定过程不需要任何点对的绝对位置信息.试验结果表明了该方法的有效性.

     

    Abstract: This paper presents a simple and geometric approach for calibrating extrinsic camera parameters from point pairs, which considers the geometric relationship between a camera and a point pair instead of individual point. The method first computes rotation matrix from three point pairs and no precise three-dimensional information of any point pair is needed. The next step is to calculate translation according to the geometric relationship between the camera and one of the point pairs. For this step, the relative position information of this point pair should be known. The whole calibration procedure requires no absolute position of any point pair. Experimental results indicate that the proposed approach is effective.

     

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