基于霍夫变换的外形检测算法的实现，包括图像读取与显示、彩色图像转化为灰度图、灰度图二值化、膨胀腐蚀、图像轮廓提取、线性图形检测以及椭圆检测-Shape detection algorithm based on Hough transform implementation, including the image read and display color images into grayscale, grayscale binary and expansion corrosion image

图像灰度处理的一个算法程序.很实用的.可以将RGB图像转化为二值图像-RGB image into a binary image a gray processing algorithm very practical.

打开图片，转化为灰度图，利用圆周差分法在图像上搜索圆-Open the picture, converted to grayscale, use the circumferential difference method in image search circle