Author Page
BA 0.99b - 1999, a Blocksorting Arithmetic compressor
Reputedly good BWT implementation, no source.
2000 IEEE Workshop on Speech Coding
The 2000 IEEE Workshop on Speech Coding will be held from September 17-20,
2000, at Lake Lawn Resort, Delavan, Wisconsin, USA.
Range encoder Homepage
The range encoder is a fast multisymbol entropy coder (similar to arithmetic coding) with GNU general public license (other licenses on request). Its compression is within 0.01% of arithmetic coding. It is based on an article dated 1979, so it is believed to be patent free. This page includes a PS format paper by G.N.N […]
PNG: The Definitive Guide by Greg Roelofs
As the title says, this is the definitive guide to the PNG format. Greg discusses all aspects of PNG, including graphics programs, progrmaming with libpng, compression, filtering, the works. This is a must-read book if you want to support this free graphics format.
Please use
this link to purchase the book through Amazon.com. Your purchase will […]
8X8, Inc.
8×8 is a leading manufacturer of digital telecommunication products, including both central office and customer premise equipment for Internet Protocol (IP) telephony.
Aladdin Systems, Inc.
Aladdin makes quite a few different software products, but the one we are concerned with is Stuffit, probably the best known archiver for the Macintosh platform.
Eminent UCSC computer scientist David Huffman dies at age 74
David A. Huffman, the founding faculty member of the Computer Science Department and a pioneer in the field, died at a local hospital on Thursday, October 7, after a 10-month battle with cancer. He was 74.
The Canterbury Corpus
This is the home page for the Canterbury Corpus, a test suite designed to provide a standard set of files for lossless compressoion testing. You will find links to the actual files in the test suite, as well as papers and test results.
The British National Corpus
The British National Corpus (BNC) is a 100 million word collection of samples of written and spoken language from a wide range of sources, designed to represent a wide cross-section of current British English, both spoken and written.
The Calgary Corpus
This is the home page for the Calgary Corpus. This set of files has long been the standard used for comparison of various lossless compression techniques.
Ross Williams
Ross Williams did some seminal work in the area of dictionary based encoders in the late 1980s and early 1990s. His LZRW algorithms were not only innovative and interesting, but they managed to place Ross right in the middle of some early software patent issues.
Shorten
Shorten is an audio compression program by SoftSound. Shorten is advertised as a low complexity audio coder that can compress in lossless or lossy mode. This is the home page with links to the download page. Includes source and binaries for DOS, Windows, and Linux. Evaluation version is available.
Greg Roelofs
Greg Roelofs’ home page. Greg has invested many years of his life towards good works such as PNG, zlib, and Info-ZIP. You might know him as Cave Newt.
Bibliography on Source Coding/Data Compression
Mitsuharu Arimura’s page of links and references to a wide variety of papers and books on lossless compression. Some of the links are listed in English, others in Japanese.
Sending TV Down the Phone Line
ADAM CLARK could be sitting on an invention with the potential to turn the computer world on its head, not to mention the worlds of telecommunications and broadcasting. The 22-year-old Knoxfield developer claims to have cracked a conundrum that has stumped researchers for years - how to deliver broadcast quality sound and video down […]
GIF89A Specification
This is a copy of the second GIF specification from CompuServe. It added quite a few features to the GIF format. Probably the best well known of these would be the ability to add animation to GIF files.
Reader Andrew T. says: The definitive document, what more can you ask for?
PNG (Portable Network Graphics) Specification Version 1.0
W3C Recommendation 01-October-1996. This document describes PNG (Portable Network Graphics), an extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-color, grayscale, and truecolor images are supported, plus an optional alpha channel. Sample depths range from […]
Wotsit’s Archive Formats
Wotsit’s Format, the complete programmer’s resource on the net. This site contains file format information on hundreds of different file types and all sorts of other useful programming information; algorithms, source code, specifications, etc. This page has information on scads of archive formats.
LHA Source code site
FTP site that contains LHA source code. Most of this page is in Japanese.
LIMIT version 1.2 — Data Compression/rchive utility
LIMIT is a fast and compact data compressor/archiver. The compression and decompression routines have been written entirely in 80286 assembly, so it runs faster than many other archivers. LIMIT also compresses better than other archivers; it uses a compression method based on 32K sliding window dictionary plus huffman encoding, similar to LHA/PKZIP/ARJ, but with some […]
SCRNCH
SCRNCH is a data compressor designed for people, such as software developers, who need to send programs or files to a large number of people cheaply. It provides a high degree of compression and the ability to customize the self-extracting compressed file. SCRNCH takes its time to produce optimal compression, but decompression is automatic […]
Unzip 5.32 - 16 bit Intel executables
UnZip is an extraction utility for archives compressed in .zip format (also
called “zipfiles”). Although highly compatible both with PKWARE’s PKZIP
and PKUNZIP utilities for MS-DOS and with Info-ZIP’s own Zip program, our
primary objectives have been portability and non-MSDOS functionality.
The JPEG Playground
This site looks like it got started but never completed
Announcing XWPL, the X Wavelet Packet Laboratory
XWPL is an X based tool to examine one-dimensional real-valued signals using
wavelets and wavelet packets. It has been designed to be as easy to use as
possible for beginners. It is intended more as an educational and exploratory
tool than as a numerical analysis program, even though it uses fast, optimized
wavelet and wavelet packet transforms. […]
Wavelet Resources - Yale
Links from the Yale Computational Mathematics Group. Contains links to software and papers. Most of the links don’t show up in this database as they are not necessarily related to using wavelets for data compression.The papers that appear off this page are all compressed postscript and have not been added to the database.
Yleisimpiä kuvanpakkausmenetelmiä ja niiden vertailua
This appears to be an overview of various data compression methods applied to image compression, both lossy and lossless. The page is entirely in what appears to be Finnish.
http://www.hut.fi/~pemakela/courses/maa-57.351/compressing.html
PICTools Imaging Library by Pegasus Imaging
Pegasus Imaging Corporation, Tampa FL.announces the release today of new version of the PICTools imaging libraries for software developers.
EE372 Home Page QUANTIZATION and Data Compression and
A basic syllabus and links giving a wide survey of the field.
Gordon V. Comack
The email address for Gordon V. Comack, the author of DMC.
