说明：  图像处理小程序，用MATLAB编写，实现图像的旋转、鼠标点击图像获取点击处的坐标和灰度以及用鼠标从图像中截取小块图像生成新的图像文件。
(Small image processing procedures, using MATLAB to achieve the rotation of the image, click on the mouse to click at the image acquisition coordinate and gray and intercept small image the image with the mouse to generate a new image file.)