huffman对英文的编码和解码程序，随便吧

mpeg2 decoder filter过滤服务端-mpeg2 decoder filter filtering service-

A * (star) Algorithm-A* (star) Algorithm

本程序实现了LZW编码，主要是针对文字压缩，自建码表，可实现编码和译码。-realized by the LZW coding is targeted mainly at text compression, self-table, achievable coding and decoding.

【文本与二值图像的游程】1. 文本游程压缩的原理 对重复字段采用3符号标识法：(1) 重复提示符,比如@,#等；(2) 游程长度参数或重复次数,若用一个字节表示,最大长度可为255个重复字；(3) 重复字符。以上三部分合称为重复因子。可见要获得压缩效益，重复字符应在3个以上。2. 图像游程压缩的原理 对于二值图像，原始数据为零一矩阵，压缩时逐行处理该矩阵：(1) 连续n个1，表示为+n；(2) 连续n个0，表示为-n。-text and binary image-- an outbound trip. Yu Cheng text compression principle on repeated field using three symbols logo Act : (a) repeat prompt, such as @,#, etc.; (2) Run-length parameters, or the number of repeat, if using a byte, the largest the length of 255 to repeat the word; (3) repeat characters. More than three as part of a repeat factor. Visibility to gain compression efficiency, duplication of characters in three more. 2. Run-image compression for the principle of two binary images, a zero original data matrix, progressive compression deal with the matrix : (1) n a row, n; (2) consecutive n 0, expressed as-n.

字符串的压缩与解压，输入一字符串文件，压缩后得一文件，在经解压得原文件。大家一起分享。-string compression and decompression, the importation of a string, in a compressed file, after decompression in the original document. To share with everyone.

此为基于二代提升小波的阈值压缩算法源码，其中可以设置小波变换的分解层数，使用的小波名称，及各层阈值设置计算公式中的参数。并将低频系数转化为十六进制，方便在其上进一步压缩，如采用Huffman压缩等，程序思路清楚，附有完整的注释，可以使用多种小波，并且很好得体现了二代小波的思想，对于初学小波者帮助很大。-based on the second generation of this upgrade wavelet compression algorithm threshold source, which can set wavelet transform decomposition level, the use of wavelet name, threshold levels and set the formula for calculating the parameters. And low-frequency coefficients into hexadecimal facilitate its further compression, such as the Huffman compression. procedures ideas clearly, with the integrity of the Notes, you can use a variety of wavelet, and reflected very well in the second generation wavelet thinking, For beginners who wavelet of great help.

lz77压宿算法,用c语言实现,可以在tc下编译通过,根据不同的计算机要修改下相关的参数值,对文本数据的压缩效果很好-lz77 places pressure algorithm, using the c language, in tc under compile, based on different computers to be amended under the relevant parameters, the text data compression with good results

DCT离散余弦变换编码和解码，利用vc对bmp图像实行变换，可以对变换和恢复后的结果进行保存和观看比较结果-the program of DCT coding and decoding.It is used to transform bmp to jpg.you can compare the original bmp to transformed jpg

劲舞009.让别人掉线.SF可用!大家来下载吧-Dance 009. Let others dropped. SF available! Everyone to download it

The file is used to show the number on the led