Wired reports on the Forgent JPEG patent case.

http://www.wired.com/news/business/0,1367,53981,00.html

The ISO committee responsible for the JPEG standard would like to track down prior art that might invalidate the Forgent patent.

http://www.jpeg.org/newsrel1.html

One of the home pages of the Ogg Vorbis project, this is a good place to start if you’re looking for downloads, documentation, or Ogg Vorbis software.

http://www.vorbis.com/

This is the download page for the Morgan Motion JPEG2000 codec. You can download a free copy of the codec and check it out. Support included for Video For Windows/DirectShow, and some video clips in AVI format are included.

http://www.morgan-multimedia.com/M-JPEG2000/

RealNetworks has announced that they are going to be Open Sourcing a significant portion of their server products. Outlook from the Open Source community is guardedly optimistic.

http://www.realnetworks.com/solutions/leadership/helix.html

Real Networks is going to add support for the Ogg Vorbis audio format in their client software, ZDNet reports. This could go a long way towards legitimizing the upstart competitor to MP3.

http://zdnet.com.com/2100-1104-946520.html

A search program for Win32 computers. ZipSearch knows how to look through Zip files and compressed EXEs to find search strings.

Version 1.07 shipping in December, 2002.

http://www.filehunter.com/ZipsearchDetails.htm

This program lets you compress AutoCad DWG files into Zip archives for distribution.

Version 2.0 is shipping as of May, 2003.

http://www.dwg2zip.com/

A great discussion of audio compression, which includes the results fo the 64 Kbps listening test.

http://ff123.net/

ChilkatZip Self-Extractor is a utility program that creates self-extracting ZIP files for Windows 95/98/Me/NT/2000/XP. They advertise a few interesting features, including 256-bit encryption, streaming technology, and progress indicators.

http://www.chilkatsoft.com/ChilkatSfx.asp

A nice set of papers on audio coding. Includes goodies such as the ISO standards on MPEG-2 part 3 audio coding.

http://www.mp3-tech.org/programmer/docs/

This page contains links to a wide variety of Ogg Vorbis documents, including specifications, programming guides, and technical discussions.

http://www.xiph.org/ogg/vorbis/docs.html

VcDemo is an interactive image and video compression (freeware) software package for Windows. It is intended as a tool for learning about compression techniques: from basic sampling and PCM to today’s most advanced scalable embedded zerotree wavelet image compression technique and the MPEG video compression standard. VcDemo is an ideal tool for students to explore the possibilities of compression theory using textbook algorithms on real images. The package is also very suitable for on-line demonstrations in lectures. A user manual is available, as well as a set of exercises that can serve as home work.

http://www-ict.its.tudelft.nl/~inald/vcdemo/

A true native Microsoft.NET Zip file-handling and streaming compression class library. Its true object-oriented design makes manipulating zip files as easy as manipulating regular files and folders. Written entirely in managed C#, it includes a variety of
VB.NET and C# samples and takes full advantage of the .NET runtime’s capabilities.

http://www.xceedsoft.com/products/ZipNet/

A feature-rich COM/ActiveX and DLL component for adding Zip and Unzip to your Windows apps with minimum effort. Includes full documentation with many samples and examples for VB, VC++, Delphi and C++Builder to get you started quickly. Supports the latest
zip file format updates including Deflate64 compression and Zip64 headers. Also includes BZip2 compression which is excellent for compressing XML data.

http://www.xceedsoft.com/products/ZipCompL/

This is an optional add-on for the Xceed Zip Compression Library ActiveX/DLL that lets your applications create sharp-looking self-extracting Zip files (.EXE’s) about as powerful as some install programs.

http://www.xceedsoft.com/products/SXMod/

Easily create sharp-looking, feature-rich Self-Extracting (.EXE) Zip files with this handy desktop application. Lets you quickly select a group of files to zip up and put into a .EXE file. Even supports being able to split the .EXEs across multiple floppy disks.

http://www.xceedsoft.com/html/ap_intro.html

Makers of high-quality, commercial-grade data compression, encryption and internet components for Windows developers.

http://www.xceedsoft.com

by P.G> Howard and J.S. Vitter. This paper from DCC ‘92 describes an improved method for error modeling in hierarchical lossless image compression.

http://www.cs.duke.edu/~jsv/Papers/catalog/node65.html

by P. G. Howard and J. S. Vitter. This paper shows how images can be encoded and decoded using parallel processing. Both Huffman and arithmetic coding are examined.

http://www.cs.duke.edu/~jsv/Papers/catalog/node66.html

by D. T. Hoang, P. M. Long, and J. S. Vitter. This paper from DCC ‘94 looks at different methods for selecting motion vectors in low bit-rate video encoders.

http://www.cs.duke.edu/~jsv/Papers/catalog/node72.html

by P. M. Long, A. I. Natsev, and J. S. Vitter, from DCC ‘97.

http://www.cs.duke.edu/~jsv/Papers/catalog/node77.html

Vista Imaging makes this chip, designed to do the image processing needed for several different types of digital cameras. Among many other features, it has a JPEG compression engine.

http://www.vistaimaging.com/vicam3.htm

An article by Stephane Rodriguez on the CodeProject web site. Stephane describes his article as Revealing XML best practices with a utility tool and a framework. Yes, that means there is some sample code here as well.

http://www.codeproject.com/soap/betterxml.asp

An overview of the basics, including Shannon-Fano, Huffman, Arithmetic coding, and a section on LZW for good measure.

http://www.cs.cf.ac.uk/Dave/Multimedia/node207.html

The About.com guide to Delphi Programming has a section on Data Compression and Backup software that looks pretty useful. About.com is a search engine and link site that features pages edited and maintained by real live humans.

http://delphi.about.com/cs/vclcompression/

The folks at Dark Horse Industries like Robert Jung’s JAR compressor. So much so that they created a graphical front end for it. Get it here.

http://darkhorseindustries.com/jazz.html

Eduard has a Java implemention of a Daubechie-4 Lifting Wavelet Transform followed by an EZW encoder with an Adaptive Huffman Encoder output stage. You can download the Java source from this page and give it a go.

http://esl.ee.sun.ac.za/~kriegler/index.html

The home page for addZip, a shareware Zip library. Libraries and controls available for 16 and 32 bit versions of MS-DOS and Windows, with support for various compilers. This is a commercial product, but an evaluation version of the library is available.
One DataCompression.info user complained that the support from the supplier is poor. Another offered this comment: The software is good. Lacks some minor things which the supplier promised he will upgrade, but never replied to my mails. Apart from the support, the software is quite good..

http://www.littlebigware.com/addzip.html

Graham Fyffe proposes an alternative type of variable length coding that he claims will offer improved efficiency. Full description, no implementation.

http://www.geocities.com/g_fyffe/selext.htm