一种基于两次Radon变换检测棋盘方格点的新算法  

A New Algorithm for Chessboard Grid Corners Detection Based on Two Successive Radon Transform

作　　者：胡海峰[1] 熊银根[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510275

出　　处：《中山大学学报（自然科学版）》2003年第2期23-26,共4页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广东省自然科学基金资助项目(001172)

摘　　要：提出了一种新的方格角点检测算法。通过连续两次Radon变换,找出角点所在的直线位置,再利用线性拟合方法对得到的直线进行校正,最后线性求解出角点的坐标。该方法最大的特点是能够自动地在正确区域找出所求方格角点,而无需人机交互,这对于动态校准的研究具有重要的意义。通过实际的应用,验证了该方法的正确性和可靠性。A novel method for grid corner detection is proposed. Two successive radon transform is adopted to find the lines grid comers lie on. Then linear fit technique is used to rectify these lines. Finally grid comers are acquired by solving the algebraic equations. The most attractive point of the method is that the region of the grid comers can be automatically detected. Thus the technique through interactive mode to select corners is not necessary, which is important to the study of dynamic calibration. It is proved, through the actual application, that the method presented in this paper is correct and reliable.

关 键 词：图像处理 计算机视觉 棋盘方格点检测 RADON变换 线性拟合 摄像机校准 方格角点检测 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]