im.m 显示图像军均衡化后的直方图，并对图像进行均值滤波，中值滤波，以及拉普拉斯锐化。压缩包内有示例图像，可以进行演示。-im.m display the image histogram equalization after the army, and the images mean filtering, median filtering and Laplacian sharpening. There are examples of image compression package can be demonstrated.