本程序采用了最简单的方块编码对512×512的lena图像进行了编码.运行程序后可以看出，方块取得越大，图像编码后失真越大。-This procedure uses the most simple code box 512 × 512 on the lena image coding. After running the program we can see that the box to obtain the greater the greater the distortion image i