基于曲线拟合的棋盘角点提取算法  

The chessboard corner extraction algorithm based on curve fitting

作　　者：兴磊磊 吴恩启[1] 吴绍民[1] 任龙[1] 徐紫红 

机构地区：[1]上海理工大学机械工程学院,上海200093

出　　处：《信息技术》2015年第1期59-61,共3页Information Technology

基　　金：国家自然科学基金资助项目(51205255)

摘　　要：由于环境及相机拍摄效果的影响,导致对棋盘格进行角点提取时出现许多错误和冗余的角点,为此提出了一种基于曲线拟合的棋盘角点提取算法。该算法是在Harris角点检测算法的基础上,将多项式曲线拟合应用到提取的结果中,更加精确地提取出亚像素角点,实验结果表明该算法是有效可行的。The purpose of this paper is to propose a kind of corner extraction algorithm for chessboard based on curve fitting, which aims to solve the problem that many comers are extracted wrongly and redundantly by common algorithm due to the influence of environment and the quality of images taken by cameras. Based on the Harris comer detection algorithm, the proposed algorithm applies curve fitting to the results of extraction, thus more accurate extraction of sub-pixel comers could be acquired. Camera calibration is conducted using the proposed algorithm, and the experimental results show that the algorithm is effective and feasible.

关 键 词：棋盘格 角点检测 HARRIS算法 曲线拟合 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]