Author Page
ImagXpress Standard
This imaging library from PegasusImaging supports reading and writing of a wide variety of compressed image formats, including JPEG, GIF, and PNG. JPEG2000 and Lossless JPEG are advertised as available with add-on packages.
SoundExpert
This web site aims to provind blind quality testing of sound codecs. The site is just being launched at this time (3/2002), and is currently testing eight codecs.
Update: As of 8/2002, a few new codecs were added to the test suite: Ogg Vorbis 1.0, MPEG-4 Audio for QuickTime, and the PsyTel MPEG-4 AAC codec.
Xpdf
This is an open source PDF renderer, which includes code that decompresses LZW data embedded in the PDF file. It doesn’t actually do the LZW decompression itself - it converts the data to a format that can be handled by UNIX compress.
The Multivalent Browser
This Java browswer knows how to render PDF files, which means it understands the elusive LZW compressed data format used by Adobe.
Java PDF Libraries
A variety of libraries that can be used to read and write PDF format.
http://www.geocities.com/marcoschmidt.geo/java-document-libraries.html#pdf
Patent Claim Strikes an Electronics Nerve
The New York Times covers the Forgent JPEG case. A good overview of the case.
Forgent’s Press Release on JPEG Patent
Forgent explains their position with respect to the infamous ‘672 patent.
http://www.corporate-ir.net/ireye/ir_site.zhtml?ticker=FORG&script=410&layout=-6&item_id=3
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Finding patent truth in JPEG claim
An article on CNET regarding the Forgent JPEG patent. This article brings up the allegation that one of the patent authors sat on a JPEG committee.
No more JPEGs - ISO to withdraw image standard
The Register UK reports that the ISO may withdraw the JPEG image format standard if the Forgent ‘672 patent holds up.
Update: Forgent Claims Rights To JPEG Patent
ExtremeTech reports on the Forgent JPEG patent case.
JPEG Patent Claim Sparks Concern
Wired reports on the Forgent JPEG patent case.
JPEG group seeks prior art
The ISO committee responsible for the JPEG standard would like to track down prior art that might invalidate the Forgent patent.
Vorbis.com
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.
Morgan M-JPEG2000 codec V1
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.
RealNetworks Helix Initiative
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.
Real embraces open-source Ogg Vorbis
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.
ZipSearch
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.
DWG2ZIP
This program lets you compress AutoCad DWG files into Zip archives for distribution.
Version 2.0 is shipping as of May, 2003.
Discussion of Audio Compression
A great discussion of audio compression, which includes the results fo the 64 Kbps listening test.
ChilkatZip Self-Extractor
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.
Technical audio papers
A nice set of papers on audio coding. Includes goodies such as the ISO standards on MPEG-2 part 3 audio coding.
Ogg Vorbis Documentation
This page contains links to a wide variety of Ogg Vorbis documents, including specifications, programming guides, and technical discussions.
VcDemo - Image and Video Compression Learning Tool
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 […]
Xceed Zip for .NET
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.
Xceed Zip Compression Library
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 […]
Xceed Zip Self-Extractor Module
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.
Absolute Packager from Xceed Software Inc
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.
Xceed Software, Inc.
Makers of high-quality, commercial-grade data compression, encryption and internet components for Windows developers.
Error Modeling for Hierarchical Lossless Image Compression
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.
Parallel Lossless Image Compression Using Huffman and Arithmetic Coding
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.
