JPEG图像压缩过程中其中一部分：haffman编码。由于这一步在压缩中尤为重要，所以与大家共享-haffman code of jpeg compress，this step is very immportant for jpeg compress.

一个简单的图像处理源码，包括Haffman编码，LZW算法的压缩和解压过程-A simple image processing source code, including Haffman coding, LZW compression and decompression process of the algorithm