Archives
Magic Function Theory
This is a recurring theme in comp.compression, which I call “The Magic Function Theory.” It sounds like a good idea, but analysis shows that it won’t work.
http://www.dogma.net/markn/FAQ.html#Q19ECW Compress by Earth Etc.
Earth Etc. makes a free wavelet based compressor that somehow ties in with their web server product. In theory they supply plugins that you can use to view the compressed images.
DCL reader JJB had this to say: Limited in size and other features in the free version as well as limited documentation in the free […]
ITU V.44 Standard Adopted
The ITU has officially adopted the v.44 standard, which is starting to ship in mid-2001 on modems supporting the v.92 standard. V.44 uses a compression algorithm known as LZJH, which was invented by Jeff Heath and is owned by Hughes Network Systems. According to Jeff, ITU testing showed that V.44 was 20% to 60% better […]
http://www.itu.int/newsroom/press/releases/2000/14.htmlImprovements to Burrows-Wheeler Compression Algorithm
A paper by Sebastian Deorowicz appears here, which claims to make improvements in efficiency to BWT compression, giving the best ratios of any BWT program on the Calgary Corpus.
http://www-zo.iinf.polsl.gliwice.pl/~sdeor/pub/deo00.psread more from " Improvements to Burrows-Wheeler Compression Algorithm "
Fractal image compression based on delaunay triangulation
PhD thesis by Franck Davoine, 20 December 1995. The key to a good fractal compression algorithm is the method by which it breaks down segments of an image into smaller pieces, called partitioning. Davoine introduces a partitioning method based on Delaunay triangulation.
ftp://ftp.imag.fr/pub/Mediatheque.IMAG/theses/95-Davoine.Franck/notice-anglais.htmlread more from " Fractal image compression based on delaunay triangulation "
WaveStat
Home of the WaveStat algorithm, which appears to be a fairly conventional wavelet-based image compressor. Links on this page to a paper describing the technique, but no code as far as I can tell.
http://www.mabuse.de/noframe/wavestat_nf.htmlCraig Nevill-Manning
Links to several publications related to data compression and pattern matching.
http://sequence.rutgers.edu/~nevill/Publications by Wil Osberger
Wil Osberger has published a bunch of papers dealing the perceptual image assessment. You can see most of them here. While this isn’t strictly a compression topic, it is obviously of critical importance to lossy compression techniques.
http://web.archive.org/web/20010428062527/http://www.scsn.bee.qut.edu.au/~wosberg/pub.htmH.263 Video Coding
Peter Cherriman’s page on H.263 coding, includes information, pointers, and a couple of demo sequences.
http://rice.ecs.soton.ac.uk/peter/h263/h263.htmlH.261 Video Coding
Peter Cherriman’s page on H.261 coding, includes information, pointers, and a couple of demo sequences.
http://rice.ecs.soton.ac.uk/peter/h261/h261.htmlPublications of Dr. Peter Cherriman
A big selection of the published papers of Peter Cherriman, concentrating on H.26x coding and other low bit rate video techniques.
http://rice.ecs.soton.ac.uk/peter/publications/publications.htmlTilo Strutz’ collection of wavelet codecs
Pointers to a variety of wavelet codecs. I believe all the codes presented here are non-commercial software.
http://www-nt.e-technik.uni-rostock.de/~ts/Software/download.htmlread more from " Tilo Strutz’ collection of wavelet codecs "
Hamarsoft
I don’t know if Hamarsoft is still in business, but you can still get a copy of HAP here. Harald Feldmann was Hamarsoft.
http://www.xs4all.nl/~feldmann/Publications of Pamela C. Cosman
A bibliography of Pamela C. Cosman’s papers, with links to many that are available on line. Many papers on wavelet-based and VQ image compression, along with a few miscellaneous others.
http://code.ucsd.edu/pcpapers.htmlLearning Random Networks for Compression of Still and Moving Images
A paper describing the use of neural networks to do image compression.
http://www.ee.duke.edu/~cec/research/neuralcompression/JPL/paper.htmlread more from " Learning Random Networks for Compression of Still and Moving Images "
Fractal Imaging, by Ning Lu
ISBN: 0124580106, April 1997, US Price: $55.95. The publisher says: Fractal Imaging presents the logic, technology, and various uses of fractal imaging by analyzing a complete, usable fractal image representation system. The book appears to be designed to help apply fractal imaging.
Please use
this link to purchase the book through Amazon.com. Your purchase will help […]
Lossy Compression of Individual Signals based on One Pass Codebook Adaptation
Paper by Christopher Chan, discussing quick and easy codebook development with VQ schemes.
http://citeseer.nj.nec.com/did/19447read more from " Lossy Compression of Individual Signals based on One Pass Codebook Adaptation "
Adaptive Vector Quantization for the Coding of Nonstationary Sources
Adaptive VQ describes a way to get asymptotically optimal results from VQ while adapting to changes in input statistics.
http://citeseer.nj.nec.com/fowler96adaptive.htmlread more from " Adaptive Vector Quantization for the Coding of Nonstationary Sources "
Practical Implementations of Arithmetic Coding
A paper by Paul Howard and Jeffrey Vitter, which includes a tutorial and presentation of a fast algorithm.
http://citeseer.ist.psu.edu/howard92practical.htmlread more from " Practical Implementations of Arithmetic Coding "
Compression Register
A register of companies, people, and institutes having something to do with data compression.
http://www.mabuse.de/noframe/comp_reg.htmlMT-WICE® - Wavelet based image compression
A proprietary image compression system using wavelets by MeVis Technology. Browser plug-ins available, naturally. Links to German language version of the page.
A DCL reader had this to say: Achieves high compression and has a useful interface. I have used only the non-registered version 2.6e
very powerful and probably superior to JWizard by Pegasus.
read more from " MT-WICE® - Wavelet based image compression "
Publications of Christopher M. Brislawn
This ftp site has copies of a number of papers by Christopher M. Brislawn. They include various ocuments on the FBI fingerprint compression standard, and a copy of the standard itself.
ftp://wwwc3.lanl.gov/pub/misc/WSQ/documents/Home Page of Martin Cohn
Martin Cohn’s home page contains links to several of his compression papers, which seem to be concentrated on lossless compression issues.
http://www.cs.brandeis.edu/~marty/