除了上面提到的压缩方法，你也可以调用VB的工具MakeCab.exe（在VB5\setupkit\kitfil32或VB98\Wizards\PDWizard目录下）生成.cab文件。先构造一个Directive 文件(*.ddf)，然后使用Shell命令调用MakeCAB /f excel.ddf就可以生成*.cab文件。关于Directive 文件的格式，可以参考MSDN Library中的《MakeCAB: A compressiOn and Disk Layout Tool》一文。
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上传时间： 2015-03-23
上传用户：zhengjian
无损压缩算法，是LDS(lossless data-compressiOn sources)的KIT.我发现很多人都想这么一份压缩软件的源代码,但是他们很难找到。
上传时间： 2015-05-14
上传用户：zhuyibin
The Audio File Library provides a uniform programming interface to standard digital audio file formats. This library allows the processing of audio data to and from audio files of many common formats (currently AIFF, AIFF-C, WAVE, NeXT/Sun .snd/.au, IRCAM, AVR, Amiga IFF/8SVX, and NIST SPHERE). The library also supports compressiOn (currently G.711 mu-law and A-law and IMA and MS ADPCM) as well as PCM formats of all flavors (signed and unsigned integer, single- and double-precision floating point).
标签： programming interface provides standard
上传时间： 2014-12-06
上传用户：a6697238
DIGITAL IMAGERY is pervasive in our world today. Consequently, standards for the efficient representation and interchange of digital images are essential. To date, some of the most successful still image compressiOn standards have resulted from the ongoing work of the Joint Photographic Experts Group (JPEG). This group operates under the auspices of Joint Technical Committee 1, Subcommittee 29, Working Group 1 (JTC 1/SC 29/WG 1), a collaborative effort between the International Organization for Standardization (ISO) and International Telecommunication Union Standardization Sector (ITUT). Both the JPEG [1–3] and JPEG-LS [4–6] standards were born from the work of the JPEG committee. For the last few years, the JPEG committee has been working towards the establishment of a new standard known as JPEG 2000 (i.e., ISO/IEC 15444). The fruits of these labors are now coming to bear, as JPEG-2000 Part 1 (i.e., ISO/IEC 15444-1 [7]) has recently been approved as a new international standard.
标签： Consequently efficient pervasive standards
上传时间： 2013-12-21
上传用户：源弋弋
This file contains a new and improved version of the Huffman coder, (June 29. 2001). The name is Huff06.m. There are also some additional files which are helpful when using Matlab for data compressiOn: quantizer, different variants of run-length-encoding and end-of-block coding in Mat2Vec, and a program which do JPEG-like entropy coding. A complete compressiOn example is shown in TestMat2Vec.m. This file is all you need for Huffman coding in MatLab.
标签： contains improved Huffman version
上传时间： 2015-07-05
上传用户：jeffery
这是06年4月刚刚完成的程序，从opencore.org下载而来。用vhdl语言描写，以及matlab仿真，testbench，以及在xinlinx上的综合。 The MDCT core is two dimensional discrete cosine transform implementation designed for use in compressiOn systems like JPEG. Architecture is based on parallel distributed arithmetic with butterfly computation.
标签： 程序
上传时间： 2013-12-16
上传用户：123啊
Wavelets have widely been used in many signal and image processing applications. In this paper, a new serial-parallel architecture for wavelet-based image compressiOn is introduced. It is based on a 4-tap wavelet transform, which is realised using some FIFO memory modules implementing a pixel-level pipeline architecture to compress and decompress images. The real filter calculation over 4 · 4 window blocks is done using a tree of carry save adders to ensure the high speed processing required for many applications. The details of implementing both compressor and decompressor sub-systems are given. The primarily analysis reveals that the proposed architecture, implemented using current VLSI technologies, can process a video stream in real time.
标签： applications processing Wavelets widely
上传时间： 2014-01-22
上传用户：hongmo
加密算法 Test Driver for Crypto++, a C++ Class Library of Cryptographic Primitives: - To generate an RSA key cryptest g - To encrypt and decrypt a string using RSA cryptest r - To calculate MD5, SHS, and RIPEMD-160 message digests: cryptest m file - To encrypt and decrypt a string using DES-EDE in CBC mode: cryptest t - To encrypt or decrypt a file cryptest e|d input output - To share a file into shadows: cryptest s <pieces> <pieces-needed> file (make sure file has no extension, if you re running this under DOS) - To reconstruct a file from shadows: cryptest j output file1 file2 [....] - To gzip a file: cryptest z <compressiOn-level> input output - To gunzip a file: cryptest u input output - To run validation tests: cryptest v - To run benchmarks: cryptest b [time for each benchmark in seconds]
标签： Cryptographic Primitives generate Library
上传时间： 2015-07-16
上传用户：wqxstar
eBook "Multimedia Technology Fundation and Application", PDF file,re-edited on Dec 19, 2006. Contents: MIDI, Encoding,compressiOn, Image Format, MPEG TV, TCP/IP, HTML, JavaScript
标签： Application Multimedia Technology Fundation
上传时间： 2015-08-14
上传用户：epson850
The Intel® JPEG Library provides a set of highly optimized C functions that implement JPEG compressiOn and decompressiOn on Intel architecture processors
标签： JPEG functions implement optimized
上传时间： 2015-08-17
上传用户：chenjjer
