中文说明：hough变换是图像处理中一种方法，该文件是用matlab语言实现的hough变换，但未使用matlab提供的函数，可以用于hough变换的学习和掌握。
English Description：
Hough transform is a method of image processing, the file is realized by MATLAB language Hough transform, but does not use the function provided by MATLAB, can be used for learning and mastering Hough transform.