这是用matlab写的dct代码用于图像的信息的隐藏和提取。。部分老师写的哦。-This is used to write the DCT matlab code for the image and extract the hidden information. . Oh part of the Writing Teacher.

MATLAB编写的huffman编解码程序，程序中计算了压缩比。-MATLAB prepared huffman codec procedures, procedures to calculate the compression ratio.

Huffman and Shannon-Fano source coding