中文说明：自编的采用Hough变换的方法估计运动模糊图像的方向，含一个M文件，注释详细，希望对学习图像复原的朋友有一些帮助。
English Description：
The method of Hough transform is used to estimate the direction of motion blurred image. It contains an m file with detailed annotation. I hope it can be helpful to the friends who study image restoration.