结合分水岭变换的彩色图像边缘检测算法

Color image edge detection using watershed transform

针对Canny算子和分水岭算法各自的优缺点,提出一种结合二者优点的彩色图像边缘检测算法。在Canny算子检测到目标的粗略轮廓的基础上,从基于标记的分水岭算法的过分割结果中根据最小距离准则搜索缺失的边缘段进行边缘连接完成边缘检测。仿真结果表明,该方法能够提取到连续光滑的边缘并形成封闭的区域,具有更强的抗噪性能。

This paper proposes a novel color image edge detection which combines the canny operator’s merit and the watershed transform’s. Based on detected cursory contour using canny operator, missing edge segments are searched and edge linking is completed with the least distance rule in the result of the marked -watershed algorithm-over-segmentation. Experiments prove that the method, which has a strong ability to resist the noise, can get continuous and slick edge and form close areas.