Archives
PNG Documentation
Links to the PNG documentation in quite a few different formats.
http://www.libpng.org/pub/png/pngdocs.htmlPKunzip reports a CRC error!
The comp.compression FAQ tells you the sad news about this problem.
http://www.faqs.org/faqs/compression-faq/part1/section-22.htmlWhere can I find Lenna and other images?
The comp.compression FAQ attempts to answer this for you.
http://www.faqs.org/faqs/compression-faq/part1/section-30.htmlHow about an Introduction to data compression?
The comp.compression provides the Cliff Notes version of the question.
http://www.faqs.org/faqs/compression-faq/part2/section-1.htmlread more from " How about an Introduction to data compression? "
PNG Support in Mozilla
Mostly history of how things have been going for support of PNG in the massive Mozilla project.
http://www.libpng.org/pub/png/pngmoz.htmlWhat is wavelet theory?
The comp.compression FAQ can tell you exactly what it is.
http://www.faqs.org/faqs/compression-faq/part2/section-3.htmlLossless JPEG Codec
A freely redistributable lossless JPEG codec. Encoder, decoder, man pages, full C source, and some documentation.
ftp://ftp.cs.cornell.edu/pub/multimed/ljpg.tar.ZStuba mirror site
A mirror site for the big compression software site. See 0index.txt for a list of what’s here, an unbelievably large treasure trove.
ftp://ftp.cs.tu-berlin.de/pub/msdos/mirrors/ftp.elf.stuba.sk/pc/packPPM by Bill Teahan
This ftp site has a few PPM programs, along with Bill Teahan’s thesis.
ftp://ftp.cs.waikato.ac.nz/pub/compression/ppm/FEI STU Bratislava,Slovakia,Europe
A very complete archive of compression programs, freeware, shareware, source, archviers, compressors, etc. They have it all. At last count this site has at least 1000 compression downloads
ftp://ftp.elf.stuba.sk/pub/pc/pack/yabbawhap - Y and AP compression filters
Public domain code by Daniel Bernstein. (Note that this ftp site has an excellent selection of compressoin programs and code.)
ftp://ftp.inria.fr/system/arch-compr/yabba.tar.ZProject Runeberg
A huge collection of Swedish language text files
ftp://ftp.lysator.liu.se/pub/runeberg/srcMatsusaka University Anonymous FTP Server
An ftp site for compression software. This includes mirrors of some hard to find sites, such as those of D.J. Wheeler. Needs organization, and I often find it a bit slow from the US.
ftp://ftp.matsusaka-u.ac.jp/pub/compression/read more from " Matsusaka University Anonymous FTP Server "
Bayes risk weighted vector quantization with posterior estimation for image compression and classification
by Keren O. Perlmutter, Sharon M. Perlmutter, Robert M. Gray, Richard A. Olshen, and Karen L. Oehler IEEE Transactions on Image Processing, February 1996). We investigate several VQ-based algorithms that seek to minimize both the distortion of compressed images and errors in classifying their pixel blocks.
ftp://isl.stanford.edu/pub/gray/reports/bayesvqip.psGiflib 4.1
a copy of giflib
ftp://metalab.unc.edu/pub/Linux/libs/giflib/giflib-4.1.0.tar.gzHack Systems
Hack Systems makes DataSafe, a product that backs up files using Zip format.
http://www.hacksystems.comContext-based, Adaptive, Lossless Image Coder (CALIC) (Huffman)
Xiaolin Wu’s static Huffman coding version of this program. Free of charge for research and non-commercial use. A total of 1.2 MBytes in a dozen or so files.
ftp://ftp.csd.uwo.ca/pub/from_wu/v.huffread more from " Context-based, Adaptive, Lossless Image Coder (CALIC) (Huffman) "
Datenkompression
A German language set of data compression links. A pretty good page of links, it probably doesn’t matter whether you speak German or not; the references mostly point to English language resources.
http://www.mathematik.uni-bielefeld.de/~bernhard/common/itlinks_fb.htmlWavelet Resources from Mathsoft
This page has references to a huge number of Wavelet-related research papers. I don’t know how many of them are online, but it is quite a treasure trove for the curious.
http://www.mathcad.com/products/we_pack.asp?page=3NeuQuant: Fast High-Quality Image QuantizationNeuQuant: Fast High-Quality Image Quantization
The NeuQuant Neural-Net image quantization algorithm (© Anthony Dekker 1994) is a replacement for the common Median Cut algorithm. It is described in the article Kohonen neural networks for optimal colour quantization in Volume 5, pp 351-367 of the journal Network: Computation in Neural Systems (Institute of Physics Publishing, 1994).
http://www.ozemail.com.au/~dekker/NEUQUANT.HTMLZlib for the Palm Pilot
A test version of zlib ported to the 3Com Pilot
http://www.pasta.cs.uit.no/~perm/PASTA/pilot/Data Compression
An overview of the field by Debra A. Lelewer and Daniel S. Hirschberg. Lots of informative text. This appears to be a survey paper that was adapted for presentation on the web. Lossless compression techniques only!
http://www.ics.uci.edu/~dan/pubs/DataCompression.htmlAdaptive Huffman Coding
A nice description of Adaptive Huffman Coding, as seen through a couple of different algorithms. I believe this is part of a survey paper by Debra A. Lelewer and Daniel S. Hirschberg.
http://www.ics.uci.edu/~dan/pubs/DC-Sec4.htmlComplex Systems VL- by themes - Fractals
Uzi Vishkin
Home Page for Uzi Vishkin, of University of Maryland. Areas of research of interest in data compression include suffix trees and string matching.
http://www.umiacs.umd.edu/users/vishkinUnisys LZW Page
Some information on LZW, it looks as though this has info on Licensing, but I’m not sure. All information is in Japanese.
http://www.unisys.co.jp/LZW/DMC.C
Software implementing a complete DMC codec, plus code for a couple of different arithmetic encoders, and a linear time Huffman tree builder.
This program implements Dynamic Markov Compression (DMC) as described in
“Data Compression using Dynamic Markov Modelling”,
by Gordon Cormack and Nigel Horspool
in Computer Journal 30:6 (December 1987). The Guazzo arithmetic coder is used here.
David Salomon’s home page
Mr. Salomon is the author of Data Compression: The Complete Reference.
http://www.ecs.csun.edu/~dxs/Data Compression: The Complete Reference, 2nd edition
by David Salomon. This book is intended to provide an overview of the many different types of compression: it includes a taxonomy, an analysis of the most common systems of compression, discussion of their relative benefits and disadvantages, and their most common usages.
Please use
this link to purchase the book through Amazon.com. Your purchase will […]
read more from " Data Compression: The Complete Reference, 2nd edition "
Gordon V. Cormack
Gordon is the author of DMC and many publications related to data compression. This is is home page, which has links to much of his work.
http://canola1.uwaterloo.ca/cormack/