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Digital Compression for Multimedia: Principles & Standards
Jerry Gibson, Toby Berger, Tom Lookabaugh, Rich Baker and David Lindberg. Drawing on their experience in industry, research, and academia, this powerful author team combines their expertise to provide an accessible guide to data compression standards and techniques and their applications
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JPEG Wizard by Pegasus Imaging
For those individuals looking for an application that deals with all aspects of JPEG imaging–The JPEG Wizard is it! The JPEG Wizard is based around the premise that altering and processing an image at the algorithmic level instead of the visual level greatly preserves the quality of an image.
http://www.pegasusimaging.com/wizard.htmlZLIB for Visual Basic
Download ZLIB for Visual Basic (26kB 24-8-97) ZLIB has been ported to an .OCX by Mark Nelson. If you don’t want the overhead of an .ocx, you can use this zlibvb.bas file (module) to give you access to the basic routines. In order to use it, you’re going to need one of the ZLIB.DLL files […]
http://patb.dhs.org/Programming/ZlibVB.htmNot Really Vanished
The home page for NRV, the next generation successor to LZO. NRV is a portable lossless data compression library written in C++. It offers pretty fast compression and *very* fast decompression. Decompression requires no memory. NRV is free under the GPL.
DCL reader Luigi T. saidIt would be very useful for my needs, but at […]
Charles Bloom’s Page
Charles has a really great collection of software he has written on this page, much of it is indexed here in the appropriate pages. His home page also contains links to some interesting papers and descriptions on various algorithms, as well as some archived posts that explain some compression topics. It’s well worth nosing around […]
http://www.cbloom.comImage Compression via Joint Statistical Characterization in the Wavelet Domain
By Robert W Buccigrossi and Eero P Simoncelli, GRASP Laboratory Technical Report #414, University of Pennsylvania, May 30, 1997. This page contains the abstract, with links to the full paper, as well as software associated with it.
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Information Theory
Lecture notes for a course on Information Theory, by John Lafferty, School of Computer Science, Carnegie Mellon University. Includes handouts, problem sets, code, additional lectures, and a page of links.
http://www.cs.cmu.edu/People/lafferty/info-theory.htmlLZRW4: Ziv and Lempel meet Markov
By Ross Williams, 1991. A description of a lossless algorithm invented by Ross Williams. The algorithm is based on LZW compression with the addition of a Markov-like prediction engine. Maybe.
http://www.cs.pdx.edu/~idr/unbzip2.cgi?compression/lzrw4.html.bz2Compression Ratios
A set of benchmarks for lossless compression of various test sets, including the CCITT B&W images, the Calgary Corpus, and a Gray Scale set. Includes some dates for checking historical progression.
http://www.cs.waikato.ac.nz/~singlis/ratios.htmlThe Compression Site
by Dave Kristula. Has download pages for archivers, plus benchmark results.
http://www.davesite.com/computers/compress.shtmlThe Lossless Compression (Squeeze) Page
This page is designed made to teach people about Lossless compression algorithms through the use of text graphics and Java Applets! Dominik Szopa has created pages that demonstrate Huffman, Adaptive Huffman, and LZW compression.
DCL reader SF has this to say: While the site itself is rather quick, it’s disorganized…the Java applets really don’t show what’s […]
Greenleaf Software
Greenleaf sells ArchiveLib, an archiving library that supports both Zip and a proprietary format
http://www.greenleafsoftware.comEntropy on the World Wide Web
Chris Hillman’s page of links to Information Theory pages, papers, etc.
http://www.informatik.uni-trier.de/~damm/Lehre/InfoCode/entropy.htmlThe Calgary Corpus Compression Challenge
Leonid A. Broukhis puts his money where his mouth is by offering a cash prize for good, reproducible compression. He has paid out at least one modest prize.
http://www.mailcom.com/challengeComplexity On-Line: Frequently Asked Questions
http://life.csu.edu.au/complex/faq.html
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Fractals and Scale
By David G. Green, Environmental and Information Sciences, Charles Sturt University. A short tutorial that provides an introduction to just what fractals are all about.
http://life.csu.edu.au/complex/tutorials/tutorial3.htmlComplex Systems Virtual Library
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http://life.csu.edu.au/vl_complex/ACE Archiver
The home page for the shareware ACE archiver, including download links. Both self extracting and Zipped versions of the file are available from this page. This page also includes free source code for UNACE, and variants on ACE and UNACE. Reader comment Excellent user interface, better compression than Zip.
http://members.aol.com/mlemke6413The gzip home page
The home page for gzip, the free compression program.
http://w3.gzip.orgLZO download site
The primary site for downloading LZO files. This includes mini-LZO, a shrunk down version of the LZO library, Perl-LZO, and Python-LZO.
http://www.oberhumer.com/opensource/lzo/#downloadPegasus Imaging Corporation
Pegasus Imaging Corporation has their fingers in many different pies, mostly related to imaging and image compression. This home page has links to many of their diffferent products, a variety of programs and libraries.
http://www.pegasusimaging.com/BWT Animation
The site bills itself as an animation, but in fact it is just a couple of screen captures that demonstrate an animation.
http://www.research.digital.com/SRC/zeus/wheeler.htmlZip and Unzip for Win95
Windows 95 programs Zip and Unzip that use zlib for the compression engine. These two programs don’t support encryption, multivolume archives, or old PKZip 1.x formats. Don’t confuse thes with the Info-ZIP products, this is something else entirely.
http://www.winimage.com/zLibDll/unzip.htmlJeff Vitter
Email address for Jeff Vitter, prolific author of papers which frequently include data compression topics
mailto:jsv@cs.duke.educodecs.tgz
codecs.tgz contains C source code for three different types of codecs: LZW, RLE, and Huffman. The archive contains source code documented in both French and English.
ftp://ftp.cdrom.com/pub/x2ftp/compress/codecs.tgzJPEG Group free software
This distribution contains MS-DOS executable copies of version 6b of the Independent JPEG Group’s free JPEG software. Several different programs for conversion and manipulation of JPEG files.
ftp://ftp.simtel.net/pub/simtelnet/msdos/graphics/jpeg6b.zipJPEG Group free software - 32 Bit Versions
This distribution contains MS-DOS 32 bit extended executable copies of version 6b of the Independent JPEG Group’s free JPEG software. Several different programs for conversion and manipulation of JPEG files.
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JPEG Group free software source
Free, portable C code for JPEG compression is available from the Independent JPEG Group. Source code, documentation, and test files are included.
ftp://ftp.simtel.net/pub/simtelnet/msdos/graphics/jpegsr6.zipSam’s Compression Links
A short list of assorted compression links, no particular theme.
http://expage.com/page/complinks