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【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.

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采用C++编写的已经封装好的lzw压缩算法，对于常规文件压缩而言，这个压缩算法的速度还是比较不错的，也可以用于嵌入式平台下使用-The use of C++ package has been prepared lzw good compression algorithm, the conventional file compression, this compression algorithm is quite good speed, can also be used for embedded platforms

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GIF文件解码器类使用说明 本解码器类支持GIF文件格式的89a版本，可支持动画GIF文件！ 本原代码未经严格测试，欢迎广大朋友批评指正。-GIF documents decoders use of this category of decoders class support to the GIF file format version 89a, GIF supports animation paper! Primitive code without testing, friends welcome criticism corrected.

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huffman编码，一种压缩与解压缩的程序，仅供大家参考。-Huffman coding, a compression and decompression procedures are for your reference.

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