Author Page
David’s View of BWT
David Scott occupies a unique niche in the world of data compression. He is very interested in how one can adapt existing compression technologies to be bijective, a term you can find defined on his web page. The stated motivation for this is to increase the difficulty of breaking an encrypted version of the file. […]
Colour metric
A good explanation on color perception. This isn’t truly a data compression topic, but it actually plays a very important role in lossy image compression schemes, so I though the library ought to have at least one or two points.
The Green Tree Of Compression Methods
A Practical Introduction To Data Compression by Alexander Ratushnyak. A Data Compression mini-FAQ with a good set of links.
A Run Length Encoding Scheme For Block Sort Transformed Data
A paper by Michael A. Maniscalco that desribes an RLE algorithm tailored for use with the BWT compression technique.
http://www.geocities.com/m99datacompression/papers/rle/rle.html
FreeExtractor
A free program to create self extracting archives from Zip files. An open source program that harkens back to shareware days by asking for donations, old-school style.
Shannon Statue
A bronze statue of Claude Shannon will be unveiled on Friday, October 6, 2000 in his hometown, Gaylord, Michigan. This sculpture by Eugene Daub was commissioned by the Information Theory Society of the Institute of Electrical and Electronics Engineers (IEEE). It will be installed in the recently named Shannon Park in downtown Gaylord.
Information Theory - Who Created It?
A small web page with some info about Claude Shannon and what he meant.
Claude Elwood Shannon
A short bio, plus some links to more information on Shannon.
http://www-groups.dcs.st-and.ac.uk/%7ehistory/Mathematicians/Shannon.html
Claude Shannon
A bio on Shannon, plus some links.
The significance of Shannon’s Work
A salute to Claude Shannon from Bell Labs.
Johan Wahlin’s Huffman Tool
A Java program that prints javacode for coding and decoding the characters through a Huffman tree.
JPEG Cruncher Pro
JPEG Cruncher is a commercial app that lets you squeeze the heck out of your images while keeping them looking as nice as possible.
What is Compression?
An explanation from Colin E. Manning, complete with pictures.
http://www.newmediarepublic.com/dvideo/compression/adv04.html
Progressive Geometry Compression
by Andrei Khodakovsky, Peter Schröder, Wim Sweldens. Compressing 3-D object representations is a good thing. Even better is allowing progressive display of these objects. The techniques in this paper are to be applied to geometric meshes.
Text Preprocessing for Burrows-Wheeler Block Sorting Compression
A short paper discussing various preprocessing techniques that can be used in BWT-based compression programs. RTF format.
JJ2000 - An Implementation of the JPEG2000 Standard in Java
JJ2000 is a Java implementation of a JPEG 2000 codec. The web site states that JJ2000 is under consideration to be a reference implemenation of the standard. JJ2000 is now freely available to all, and may be freely used in products that implement JPEG 2000-Part I.
The page also includes links to a white paper, presentations, […]
CyberMail
Cybermail is a product that lets you compress video files for email transmission. According to the advert, they have a revolutionary new compression engine!,
VIGOS Website Accelerator
Vigos makes software that lets you compress web pages before delivering them to your customers.
Data Compression: Bits, Bytes, and Beefalo
by Walter Korman. An introductory article with a very brief look at the field, along with some links.
Shannon Fano Coding
An overview of Shannon Fano coding from the folks at the DataCompression Reference Center.
This link points to an archived site, as the original has disappeared. Links on the archived page may or may not work properly.
Data Compression
by Jack Ganssle. A quick look at lossless compression, including RLE, Huffman coding, and LZ techniques.
EE 5585 Home Page
A collection of class notes, homework assignments, and links for a class on Data Compression at the University of Minnesota.
ACB, DMC, PPM, LZ - Classification, Idea, Comparision
by George Buyanovsky. One of the only existing explanations of the mysterious ACB algorithm.
http://www.cs.pdx.edu/~idr/unbzip2.cgi?compression/acb_compress.html.bz2
Introduction / Lossless Data Compression
A web page that provides an overview of lossless techniques.
CInfoZip
CInfoZip by Alchemy Lab is an MFC class that makes it easy to add Zip support to your C++ programs written using Visual C++. Despite the fact that Alchemy Labs is a commercial operation, they’re giving this code away for free.
Compression Algorithms
This page has links to a bunch of algorithm descriptions, courtesy of the Data Compression Reference Center.
This link points to an archived site, as the original has disappeared. Links on the archived page may or may not work properly.
Introduction to Data Compression
A set of slides, maybe to accompany a lecture. Covers basic info theory and data compression.
http://www.ifi.uio.no/~ftp/publications/cand-scient-theses/SHuseby/html/node41.html
Information Theory Primer
A very gentle introduction to Shannon’s discrete entropy, written for moleculary biologists.
Reader Mike said To the point explanation of the “why” of some of the math. This allows you to look a symbols and understand the _meaning_ not just the math..
IstraSoft
IstraSoft appears to make some speech codecs, supplied as Windows DLLs. Plus some discussion on their web page re: English phonetics.
