边缘检测在图象分割、模式识别、机器视觉等中都有重要作用，人们已研究出很多种边缘检测算法，而哈夫变换和canny边缘算子等是最经典的算法-Edge detection in image segmentation, pattern recognition, machine vision, etc. have an important role, it has now developed a variety of edge detection algorithm, and the Hough tra