关键词: 棋盘格, 角点, 快速检测, Harris算法

Abstract: Checkerboard images are widely used in camera calibration and vision measurement，so a novel fast algorithm for detecting checkerboard corners is proposed to solve the problems of present corner detection algorithms.The algorithm is based on the characters of transition region and gray level distribution；and it uses loop detection method.Simulation and real teat results show that the algorithm is real-time and robust to rotation，intensity change and edge blur.In comparison with Harris，the algorithm is easier to realize，and the computation is smaller.

Key words: checkerboard image, corners, fast detection, Harris algorithm