中文说明：基于运动模糊图像产生的原因，自编一个生产运动模糊图像的matlab程序，程序 需要输入模糊长度，默认模糊角度为0，包含一张图片
English Description：
Based on the causes of motion blurred image, a matlab program for motion blurred image production is compiled. The program needs to input the blur length, the default blur angle is 0, including a picture