Canny 边缘检测

这几个网站介绍了canny边缘检测比较好理解 http://blog.csdn.net/xiajun07061225/article/details/6926108 http://blog.csdn.net/jia20003/article/details/41173767 http://www.opencv.org.cn/opencvdoc/2.3.2/html/doc/tutorials/imgproc/imgtrans/canny_detector/canny_detector.html