DCT

 用霍夫曼编码实现的简单的文本压缩解压缩C++源程序

Codes". Huffman coding uses a specific method for choosing the representation for each symbol, resulting in a prefix code (sometimes called "prefix-free codes") (that is, the bit string representing some particular symbol is never a prefix of the bit string representing any other symbol) that expresses the most common characters using shorter strings of bits than are used for less common source symbols. Huffman was able to design the most efficient compression method of this type: no other mapping of individual source symbols to unique strings of bits will produce a smaller average output size when the actual symbol frequencies agree with those used to create the code. A method was later found to do this in linear time if input probabilities (also known as weights) are sorted.

WinEYS压缩源码例程，程序结合易语言扩展界面支持库，调用API函数实现压缩解压功能。(WinEYS source compression routines, programs combined with easy language support library expansion interface , call the API function to achieve compression and decompression functions.)

CCSDS图像压缩源代码，MATLAB编写处理(CCSDS image compression source code, MATLAB write processing)

说明：  Script Unpack Frimware Echolink Open Vu 9

说明：  JPEG压缩，matlab实现的JPEG压缩算法(JPEG compression, matlab code)

解压arj文件的程序 (a program to deconde .arj files)

利用C++实现的插入,删除,增加接点等功能(The use of C++ Realized insert, delete, increase the contact and other functions)

lzw压缩解压算法源码(The soruce of LZW compression algorithm)

代码基于MATLAB平台完成，能够对图片进行压缩处理(Code based on the MATLAB platform, can carry on the compression processing to the image)