编写一个程序，对输入的图像进行哈夫曼编码，显示原图像的熵、编码后的平均码字长度、并能够根据编码重建出图像。 Sobel算子和拉普拉斯算子进行锐化，并比较结果。-Write a program to image the input Huffman coding, the entropy of the original image displayed, encoded, the average code length, and be able to reconstruct the image a

用matlab编写的拉普拉斯高斯算子代码（LoG算子），用该函数实现LoG算子提取图像边缘点的功能。-Written by matlab Laplacian of Gaussian operator code (LoG operator), using the LoG operator functions for extracting the image edge points of the function.