Author Page
The DCG Framework
DCG Framework is a object oriented framework for lossless data compression. It is written in C++, and intends to be a didactic framework for data compression teaching. This framework is pointed to by the Secção de Análise de Sinais page.
http://www.deetc.isel.ipl.pt/analisedesinai/ccd/ccd_links.html
David Pereira Coutinho
Personal page of David Pereira Coutinho, Professor at Instituto Superior de Engenharia de Lisboa. This page contains links to several compression-related abstracts and papers, as well as links to the Data Compression Framework developed with his students. (Indexed here as The DCG Framework.) The majority of the page is available in English and Portuguese.
Audio Signal Processing Software
Includes editing software, file formats and converters, codecs, and links. This page is at the University of Hannover, Germany. While there appears to be a wealth of software on this site, it would appear that you need special privileges to get access to ti.
JPEG - Information Links
A page of links from the JPEG committee.
Introduction to Information Theory and Data Compression (Discrete Mathematics and Its Applications Series)
by Hankersson et. al. Hardcover - 330 pages (November 1997) CRC Press; ISBN: 0849339855. A textbook for upper-level or graduate course on compression. Please use the link on this page to purchase this book, it will help support the Data Compression Library.
http://www.amazon.com/exec/obidos/ASIN/0849339855/theinternetdatac
Call for Contributions for JPEG 2000
The original call for contributions for JPEG 2000. This is of course way out of date, but it may be of historical interest.
FCD 14495 - public draft
A final draft of the JPEG-LS document. This is not the standard, but it is bound to be pretty close. The doc says:
This document is the final committee draft of CD 14495, Lossless and near-lossless coding of continuous tone still images (JPEG-LS) agreed by ISO/IEC JTC1/SC29 to be made available for public comment on WG1 […]
Signal and Image Processing Group
The University of Bath has a group that is advertised as “world leaders in still image and video coding.” They appear to be interested in lossy compression based on DCT, Wavelets, and Fractal compression. This is their home page.
Mark Nelson
Mark Nelson’s home page, with links to his books and articles.
Mark Nelson’s Articles
Mark Nelson’s magazine articles, including articles on LZW coding, arithmetic coding, Zlib, and JavaZip.
Overview of the MPEG-4 Standard
MPEG-4 is an ISO/IEC standard being developed by MPEG (Moving Picture Experts Group), the committee which also developed the Emmy Award winning standards known as MPEG-1 and MPEG-2.
This document appears to be an overview of the standard as it existed in approximately 10/99
http://www.chiariglione.org/mpeg/standards/mpeg-4/mpeg-4.htm
DAKX LLC Home Page
DAKX is claiming a new method of lossless data compression that is fast and patented. It works on audio and video data. The method is called difference-adaptive compression. DAKX supplies a bit of source code that you can experiment with, and will be happy to license the technology to you or your company.
The JPEG FAQ
What the title says.
http://www.cis.ohio-state.edu/hypertext/faq/usenet/jpeg-faq/top.html
Jeff Vitter
Home page for Jeff Vitter, prolific author of papers which frequently include data compression topics.
Julian Seward
Julian Seward’s home page. Julian is the author of Bzip. This page appears to be slated for removal.
Alistair Moffat
Alistair Moffat’s home page. Alistair is one of a cluster of antipodal data compression mavens, currently working in Melbourne, Australia. This page has a link to some copies of abstracts and papers.
Maximum Entropy and Overlapping Events
The purpose of this applet is to help develop intuition about maximum entropy distributions. A central advantage of the maximum entropy framework is its ability to model overlapping events without increasing the number of parameters or fragmenting the training data. Using maximum entropy techniques, it is possible to model a probability distribution on 2n elements […]
LZW compression
A page with a brief description of LZW compression by Dominik Szopa. This page includes a Java applet that helps show how LZW looks in action.
JPEG FAQ
The JPEG FAQ, as maintained by Tom Lane and the Independent JPEG group.
InterGif
InterGIF is a freeware program for making animated GIFs. It claims to do a good job of optimization. I have feedback from one use who was quite happy with the results - a sample GIF created by GIMP was reduced from 2235 bytes to 1455. Not bad.
mpeg Encoder - for 95/NT
A freeware MP3 Encoder. Not sure of its status, the author seems to be having some licensing problems.
Hyper MPEG Player
A Netscape plug-in that lets you display MPEG files online. Avoid the hassle of requiring a complete download before you can start viewing the file.
Making MPEG Movies In IDL
Just what the title says. IDL appears to be a product from Kodak that is designed for programming tasks requiring data analysis and visualization. You can read the full pitch at the
Research Systems web site. It gets a little breathless at times, but I suppose that’s to be expected.
ADI MPEG Audio Player
A plugin for the Netscape browser that lets you listen to MPEG audio streams.
Ligos Technology
Ligos claims to have the world’s best MPEG-2 encoders. The products are part of the LSX-MPEG family. Take your pick and purchase directly from the web site.
Sigma Designs
Sigma makes hardware MPEG decoders. You might need one of these if you’re designing a set-top box or a new PC video card.
Optibase
Optibase claims to be a leading supplier of MPEG content creation tools. Their Web site lists products such as MPEG ComMotion Pro and the The MPEG ComMotion UDP.
RealNetworks MPEG Encoder (was Xing)
Xing’s encoder creates both audio and video MPEG streams.
Download mtv for Linux & Unix
mtv is an MPEG TV Player that runs under Linux and UNIX. Besides watching MPEG files from the Interneti, mtv also lets you play Video DVDs. Freeware and commercial versions are available.
