加密、压缩

一个压缩和解压缩的例子，里面有详细的注释和演示-a compression example, with a detailed presentation of the Notes and

dct source code for jpeg decoder -Copy source code for jpeg decoder

① 对输入文法，由程序自动构造FIRST FOLLOW集 ② 对输入文法，由程序自动生成它的LL(1)分析表； ③ 对于给定的输入串，应能判断识别该串是否为给定文法的句型。-① the input grammar, automatically constructed by the procedures set FIRST FOLLOW ② the input grammar, it is automatically generated by the process of LL (1) analysis table ③ For a given input strings, should be able to identify the string to determine whether a given grammar sentence.

Wavelet_OMP compressive sensing -Wavelet_OMP compressive sensing Wavelet

zlib OCX控件源码 -The source of zlib ocx control

是个关于压缩程序的代码。-is on the compression procedure code.

用vb制作安装程序的源码,开发环境vb6.0,非常好的源码哦-production with the installation procedures vb source code, development environment vb6.0, very good source Oh! !

【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.

GIF图片解压成RGB格式的程序，可根据需要，转成灰阶或其它格式-GIF images into RGB format decompression procedures can be, converted into gray-scale or other format

教你如何制作PDF417、QRCode二维条码,如何进行图像压缩，提供免费的DLL,有打印复制设置样本，是你制作与应用二维条码的必备案例-show you how to make pdf417,ORCode 2d bar code,how to compress image,provid free dll, it has print and copy setting sample,it is necessary for you to make and apply 2d bar code.