用Hough变换的方法提取图像拐点

用Hough变换的方法提取图像拐点 FINDING CORNERS BY USING HOUGH TRANSFORM 袁捷 Yuan Jie 1 first-author 胡正仪 Hu Zhengyi 1 王延平 Wang Yanping 1 武汉大学电子信息学学院 武汉大学电子信息学学院 College of Electronic Information, Wuhan University College of Electronic Information, Wuhan University 拐点特征是模式识别中经常用到的一类不变量．本文利用Ｈｏｕｇｈ变换找出图像轮廓中的直线段，确定其直线方程，将相邻两直线段延长相交得到的交点定义为拐点．由于Ｈｏｕｇｈ变换是统计平均的结果，所以求得的拐点较为稳固，抗噪声性能较好．文中也给出了拐点的具体算法． Invariant corner features are often used in pattern recognition. By using Hough transform, the lines in the image and their parameters can be steadily determined. Corner defined as the intersect of two neighboring lines then can be obtained more accurately and with unsensitive to noise. An algorithm to calculate the locations of conners is also gaven in this paper. 模式识别 Hough变换 直线参数 拐点特征 pattern recognition Hough transform line parameters corner feature TN941.1 国防科工委预研基金 1998-01-01 2021-04-01 1