基于同心圆环模板的摄像机标定方法  

Camera Calibration Based on Concentric Ring Template

作　　者：徐仙伟[1] 杨雁莹[1] 曹霁[1] 

机构地区：[1]南京森林警察学院信息技术系,南京210023

出　　处：《科学技术与工程》2013年第31期9375-9380,共6页Science Technology and Engineering

基　　金：中央高校基本科研项目(LGYB201310)资助

摘　　要：在研究传统的摄像机标定方法的基础上,提出了一种新的基于同心圆环模板的摄像机标定方法。使用一种几何的方法实现同心圆圆心的检测及相机标定,同时利用射影几何内在约束条件来对同心圆图像投影的几何结构实现优化,求出单应矩阵H,从而进一步计算出摄像机内外参数,且标定后期无需进行畸变校正。通过模拟实验和真实图像实验证明,该摄像机标定方法精度高,鲁棒性强,具有一定的实用性。Based on traditional research of camera calibration method, a new algorithm for camera calibration used concentric ring template was proposed. Geometric realization to detect the center of the concentric circles and camera calibration is used. The geometric structure of concentric circle image projection by used the inherent con- straints of projective geometry is optimized. Then the homography matrix H and finally obtaining the parameters of camera are calculated. The method does not require distortion correction at calibration later stage and has higher precision. By experiments of simulation and real images verified it＇ s calibration performance. The simulation results show this method has high detection accuracy, strong robustness and a certain practicability.

关 键 词：摄像机标定 同心圆环 圆心检测 

分 类 号：TN948.41[电子电信—信号与信息处理] TP391[电子电信—信息与通信工程]