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LuraDocument
LuraDocument represents an innovative compression software custom-tailored to the compression of scanned color documents composed of both images and text. The documents are partitioned into pure picture and pure text segments through the use of its state-of-the-art segmentation algorithm. Each of these segments is then compressed using an algorithm optimized for this type of […]
Incompressible String
The definition from the NIST Dictionary of Algorithms and Data Structures.
WMA MP3 Recorder
WMA MP3 Recorder turns your computer into complete audio recording studio. You can record sound from any internal or external source into WMA/MP3 format sound file directly without use additional disk space.
Version 5.60 is shipping as of April, 2003
Welcome to Advanced RealMedia Repair Homepage
Advanced RealMedia Repair is a package that will help you repair your broken RealMedia files. Supports both video and audio files.
Easy Video Joiner
This commercial program is used to join multiple video files into a single file. Supported video formats include MPEG, RM, and Windows Media.
Version 5.01 shipped in March, 2003.
How File Compression Works
The How Stuff Works web site tackles the question of just how Data Compression works, pitched to the general audience. All in all not a bad stab at it, with links to may other How Stuff Works pages for the curious.
Windows Media Video 9 Video Compression Manager
This tool lets you package content encoded with the Series 9 codecs in traditional AVI containers. Future applications should use the ASF file container, but legacy apps may be constrained to the AVI format. This tool allows the old and the new to work together.
This tool was shipping in a Beta version as of April, […]
http://www.microsoft.com/windows/windowsmedia/9series/codecs/vcm.aspx
Kolmogorov Complexity
The definition from the NIST Dictionary of Algorithms and Data Structures.
K-ary Huffman Encoding
The definition from the NIST Dictionary of Algorithms and Data Structures.
Cyclic Redundancy Check
The definition from the NIST Dictionary of Algorithms and Data Structures.
Suffix Tree
The definition from the NIST Dictionary of Algorithms and Data Structures.
Suffix Array
The definition from the NIST Dictionary of Algorithms and Data Structures.
Prefix Code
The definition from the NIST Dictionary of Algorithms and Data Structures.
Shannon-Fano Coding
The definition from the NIST Dictionary of Algorithms and Data Structures.
AVPhone ActiveX Controls
These ActiveX controls provide real-time compression and rendering of audio and video streams, supporting standard formats such as H.263, MPEG-4, G.723 and more. It appears that they are designed for IP Telephony, but they also advertise the ability to do straight-up compression to/from disk or memory. You can use a demo version for free, with […]
LameBrain
A freeware MP3 encoder for Mac OS X. Uses the LAME encoder to do all the work, provides a nice GUI front end for all that.
Shipping version 0.5.2, still in beta, as of April 2003.
SouthDowns
SouthDowns is a set of Perl scripts for the creation of JPEG 2000 files from JPEG 2000 codestreams. If you’re interested in the format used by the standard, this might be an easy way to experiment with it. The sample program appears to insert some metadata into the image file.
Warning: this release has no release […]
Vlorb
Vlorb is a high-quality Audio CD to Ogg Vorbis encoder. It does this by operating as a console front end to cdparanoia and CDDB on Linux systems.
Vlorb 1.0pre9 shipped at the end of March, 2003.
SoX - Sound Exchange
SoX aims to be the Swiss Army Knife of sound processing programs. It shows up on the data compression radar by virtue of the fact that SoX is able to convert between a wide variety of compressed formats, ranging from MP3 and Ogg to ADPCM and linear PCM. SoX has ports to a really nice […]
Jarchiver
This is an open source tool that is described as a Java based archiving tool that is ideal for housekeeping tasks such as backups, pruning and more. Part of the archiving task is the ability to create zip archives, which explains its presence here.
Version 1.0 of Jarchiver is shipping as of March, 2003.
MPEG : Standards, Technology and Applications
A nice tutorial on MPEG-1 and MPEG-2 by Shanawaz Basith. Includes some links at the end.
http://www.doc.ic.ac.uk/~nd/surprise_96/journal/vol2/sab/article2.html
MPEG-2 Video Compression
A tutorial by P.N. Tudor on the BBC web site. Gets right down into the nitty-gritty, stay away if you have math-phobia.
Real GIF Optimizer
A GIF optimizer seeks to reduce the size of your GIF files, usually without compromising image quality. Not enough detail on this site to pass judgment, but good GIF optimizers will also let you reduce the number of colors in the palette dynamically, so you can see the effect.
Real GIF Optimizer 3.05 shipped in February […]
Zip Backup to CD
A backup program that uses the standard Zip format. Supports complete system restore for Windows ME and 9x. Version 3 will have built in CD and DVD burning support, eliminating the need for an external burner program.
Version 2.34 is shipping as of March, 2003.
English Text Frequencies
This page has some data on frequencies of words and letters in English text.
HoloDynamic Compression: Mapping Miracles into the Machine
A great example of an incredible compression claim. There’s just a teeny tiny bit good thinking in here, and a huge amount of tangential speculation attempting to walk upright on two legs. Read it and just be glad the author doesn’t seem to be raising funds.
Tjalling J. Tjalkens
Tjalling is on the faculty of Technische Universiteit Eindhoven, which appears to be located in Eindhoven, The Netherlands. He is involved in research of various aspects of Information Theory, including Context Tree Weighting and Coding.
Compress::PPMd
Salvador Fandiño García has created a Perl interface to Dmitry Shkarin PPMd compression library.
Version 0.05 is shipping as of March, 2003.
ReaConverter Pro
This nifty program performs batch conversions of programs from a wide variety of types, including JPEG, BMP, TIF, PNG, and the usual other suspects. Lots of other features are added to the mix, including such goodies as watermark insertion, cropping, sharpening, blurring, etc.
Version 3.0 shipped in April, 2003.
File Compression: New Tool for Life Detection?
Researchers looking for signs of life have decided that complexity might be a good indicator. What better to measure complexity than gzip?
