dct

对图像进行斑点噪声的添加，用方程f=f+n*f将乘性噪音添加到图像f上，其中n是均值为零，方差为var的均匀分布的随机噪声。(Image speckle noise addition, the equation f = f+ N* f will be added to the multiplicative noise on the image f, in which n is zero mean, variance var of the uniform distribution for the random noise.)

EZW matlab 源码用于图像压缩试验()

HUFF_SC.ZIP => HUFFMAN Source code.ZIP

ssr科学上网工具，该压缩文件已经配置好了，直接解压就可以使用了。(SSR scientific Internet access tool, the compressed file has been configured, the direct decompression can be used.)

quazip 采用qt 进行解压和压缩,本源码来源官网，可以生成a文件和dll 文件，使用时将a文件和dll文件加入工程中，另外要将头文件加入到工程之中。经本人测试可用

用C++的模板类实现的霍夫曼树及其编码过程，可视地展示霍夫曼树的结构。(Huffman tree and its encoding process to achieve C++ template class, visual display of the structure of the Huffman tree.)

说明：  JpegLs源码,由UBC和HP在2000年联合开发(JpegLS project,developed by UBC and HP.)

w_ipp-sample-data-compression，Intel，IPP函数库，文件数据快速压缩解压缩工具包。可以进行数据加密解密告诉处理( W_ipp-sample-data-compression, Intel, IPP library, file compression and decompression tool for fast data packet. You can tell the encryption and decryption of data processing)

说明：  本系统运用LZ77字典算法、懒惰匹配算法和Huffman编码算法，使用Java语言在Jbuilder2006环境下设计了使用GZIP算法对文件压缩与解压缩的实现程序。用户可以根据自己的需求，使用此程序方便地对文件进行压缩或者解压缩操作。(This system uses LZ77 dictionary algorithm, lazy matching algorithm and Huffman coding algorithm, and uses Java language to design the implementation program of gzip algorithm for file compression and decompression under the environment of JBuilder 2006. Users can use this program to compress or decompress files conveniently according to their own needs.)

校际运动会管理系统(Schools Games Management System)