A pretty good list of links to companies that are doing business in the compression arena, and/or their products.

http://dir.yahoo.com/Business_and_Economy/Business_to_Business/Computers/Software/System_U
tilities/Compression/

8 lectures by David J.C. MacKay
January 1995. Cavendish Laboratory, Cambridge, Great Britain.
All of these lectures are available as PostScript files. The eight lectures cover data compression, coding, arithmetic coding, noisy channel coding, and much more

http://wol.ra.phy.cam.ac.uk/pub/mackay/info-theory/course.html

Typical clinical MRI scanners generate data on the order of about 200 MB each day. Because this data provides important diagnostic information, care must be taken in compressing it, and lossy compression is generally avoided. In this project we investigate different techniques for lossless compression of 3-dimensional MRI scans of the brain. These methods include predictive coding, “model coding” using a reference data set, background suppression, symmetry coding and pyramid coding

Matlab source code is included along with the full text of the paper.

http://www-ise.stanford.edu/class/ee392c/demos/hargreaves_johanson_nayak/

These guys apparently make a couple of variations on a product called Genuine Fractals. The product is a Photoshop plugin that appears to read fractal file formats and do some sort of scaling. If this is a grotesque misrepresentation of what the product does, feel free to email a correction.

http://www.altamira-group.com/

Mark Adler has given much to us via his work on Info-ZIP, zlib, and PNG. Is he an interesting person as well? Here is the place to find out.

http://www.alumni.caltech.edu/~madler/

A lot of explanation of Wavelets on this page, along with some well-considered links. This site is often slow, and sometimes missing. Please be patient!

http://www.amara.com/current/wavelet.html

This newsgroup doesn’t generate as much compression as its sibling, comp.compression. I know of nothing else that differentiates the two.

news://alt.comp.compression

This newgroup carries a good deal of interesting traffic on data compression. The lack of moderation means the noise level is still fairly high, but the interested reader can find much to enjoy here.

news://comp.compression

“Vivo Software, Inc. is a leader in the Web video revolution, providing innovative solutions that enable people to communicate with video over the Internet.”

http://www.vivo.com

A list of browsers that support PNG. I’m not sure if this information is as relevant as it once was.

http://www.libpng.org/pub/png/pngapbr.html

This page is intended to provide an explanation of some of the features of the PNG format for non-technical users

http://www.libpng.org/pub/png/pngintro.html

Lots of links to PNG related material

http://www.libpng.org/pub/png/pngmisc.html

Home page for Stuart Inglis, maintainer of the Compression Links page. Stu’s thesis is online, along with the source code used during his study. Stuart says that it achieves the world’s best image compression!

http://www.cs.waikato.ac.nz/~singlis/

Mark Nelson’s zlib article, originally published in Dr. Dobb’s Journal. The source code for the article includes an OCX that allows you to use zlib from many different languages under Win32

If you are attempting to use the zlib OCX with Visual Basic or Visual C++, please follow the links to my FAQ. The OCX that accompanies this article needed an upgrade to work with later versions of Microsoft’s tools.

http://www.dogma.net/markn/articles/zlibtool/zlibtool.htm

A site that provides some good pages discussing various fundamental aspects of Data Compression. Although the site appears to be a university project in Croatia, all of the pages are writen in English.
This link points to an archived site, as the original has disappeared. Links on the archived page may or may not work properly.

http://web.archive.org/web/20020604012435/http://www.rasip.fer.hr/research/compress/index.
html

An enormous page of data compression links, well organized by type. Although this page is hosted in Japan, nearly all of the links are described in English.

http://www.hn.is.uec.ac.jp/~arimura/compression_links.html

This site has pointers to various sits related to image compression. The entire site is written in French.

http://www.info.unicaen.fr/~karczma/matrs/ressint/compres.html

Mark Nelson’s Dr. Dobb’s article on LZW compression from October 1989. Includes source code in C.

http://www.dogma.net/markn/articles/lzw/lzw.htm

A nice explanation of LZW compression from the fine folks at the Data Compression Center.
This link points to an archived site, as the original has disappeared. Links on the archived page may or may not work properly.

http://web.archive.org/web/20020214072020/http://www.rasip.fer.hr/research/compress/algori
thms/fund/lz/lzw.html

A course outline from Stanford.

http://www.stanford.edu/class/ee376b/

Gerry Wolf’s home page, including links to “Language Learning as Compression”, “Computing as Compression”, and “Cognition as Compression”

http://saturn.sees.bangor.ac.uk/~gerry/

A group of statistical coders from Charles Bloom. This includes several different entropy encoders, including Huffman, Adaptive Huffman, CACM Arithmetic coding, and a Skew Coder.

http://www.cbloom.com/src/index_st.html

Clemen has some pages here that discuss Wavelet theory in general, as well as specifics on the Fast Lifting Wavelet Transfrom and Embedded Zerotree Wavelet Encoding.

http://perso.wanadoo.fr/polyvalens/clemens/clemens.html

A short bio of the famous Russian mathematician. His name lives on in comp.compression and elsewhere due to his seminal work in the study of complexity.

http://www.dam.brown.edu/people/yiannis/kolm.html

A set of pointers to many technical articles and papers on wavelets. A few broken links, but lots of live pointers to postscript papers.

http://www.stats.bris.ac.uk/pub/reports/Wavelets/Wavelets.html

DATA COMPRESSION PROGRAM for VM/ESA enables VM customers to automatially (sic) and transparently compress and expand CMS minidisk file data. This capability can help reduce DASD utilization, load on the I/O subsystem, and staff time spent managing minidisk space and “disk full” conditions.

From your friends at IBM.

http://www.vm.ibm.com/related/datacomp.html

A set of links to Cormack’s publications. Papers germane to this page include one on DMC and arithmetic compression. Pointers to many other data compression articles which are unfortunately not linked to this page.

http://plg.uwaterloo.ca/~gvcormac/PAPERS.html

Links to companies engaging in commerce related to data compression. A moderate-sized set of links. At last check, in addition to direct listings, contains subtress for Commercial Products, Fractal Compression, and a couple of others.

http://www.yahoo.com/Computers_and_Internet/Software/System_Utilities/Compression/

A suprisingly sparse set of entries. You would think Yahoo could do better.

http://www.yahoo.com/Science/Computer_Science/Compression/

Home of LHMelt, UNLHA32.DLL, UNARJ32.DLL. All text on this page is in Japanese, except for a single link pointing to English information on UNLHA32.DLL.

http://www2.nsknet.or.jp/~micco/micindex.html