说明：  利用matlab进行图像数据的剪裁，需要提供需剪裁影像的中心点行列号；RMSE.m是计算均方根误差RMSE的程序。
(Using MATLAB to tailor the image data, we need to provide the central point and row number of the image to be tailored. RMSE.m is a program to calculate the root mean square error RMSE.)