Greg Roelofs’ email address

mailto:newt@pobox.com

This site is dedicated to the MP3 standard. You will find here information about the MP3 standard and upcoming audio compression techniques, tests, MPEG source code.

http://www.mp3-tech.org

During the development of PKZIP v. 2.0 for MS-DOS, PKWARE has
discovered hardware faults in newer 80386 & 80486 computers.
These faults can cause anomalies in the operation of PKWARE
software as well as other software.

ftp://ftp.pkware.com/probdesc.zip

PASJPEG is a port of the sixth public release of the IJG C source (release
6a of 7-Feb-96) [3], that implements JPEG baseline, extended-sequential, and
progressive compression processes to Turbo Pascal 7.0 for DOS (TP). The code
has been tested under Delphi 2.0 [6], it can be ported to other Pascal
environments, since many compilers try to be compatible to TP.

ftp://ftp.simtel.net/pub/simtelnet/msdos/turbopas/pasjpg10.zip

Tiny HAP is based on Harald Feldman’s HAP & PAH 3.0, and is distributed freely. The source code is not identical and should run 25% faster.

ftp://ftp.turbo.nsk.su/pub/msdos/archiver/thap102c.zip

ARC is used to create and maintain file archives. An archive is a group of files collected together into one file in such a way that the individual files may be recovered intact. ARC automatically compresses the files being archived so that the resulting archive takes up a minimum amount of space.

ftp://garbo.uwasa.fi/pc/arcers/arc602.exe

Use ARCE to extract files from an ARC archive file. ARCE is a freeware package.

ftp://garbo.uwasa.fi/pc/arcers/arce40g.zip

Includes WaveVideo, PPMZ, LZP, and WaveCode. Charles has source for most of this stuff available elsewhere on his page.

http://www.cbloom.com/exe/

Sponsored by IEEE Computer Society March 27-29, 2000, Las Vegas, Nevada

Topics include, but are not limited to, the following:

• Digital Image Processing Data Storage Platforms
• Document Image Analysis Optical Data Transmission
• Data Compression New Architectures for Multimedia
• Authentication of Video and Audio Processing
• Data Graphics and Video Hardware
• Multimedia Computing Error Control Codes
• Hybrid Source/Channel Coding Video and Audio Codec Design
• Systems Interfacing and Enterprise Architectures
• Integration Enterprise-wide Information
• Information Databases Management

http://www.cs.colostate.edu/~srimani/itcc2000/cfp.html

The comp.compression FAQ attempts to shed some light on this topic.

http://www.faqs.org/faqs/compression-faq/part1/section-7.html

Tons of links to software here

http://www.libpng.org/pub/png/pngapvw.html

“. Compression Algorithms for Real Programmers describes the basic algorithms and approaches for compressing information so you can create the smallest files possible.”

Please use
this link to purchase the book through Amazon.com. Your purchase will help support this web site.

http://www.bhusa.com/bookscat/search/details.asp?isbn=0127887741&country=United+States&msc
ssid=PB89QLSG0L4X9HJ22543GFMP6P67BWW7

From the site: Computer images are extremely data intensive and hence require large amounts of memory for storage. As a result, the transmission of an image from one machine to another can be very time consuming. By using data compression techniques, it is possible to remove some of the redundant information contained in images, requiring less storage space and less time to transmit. Neural nets can be used for the purpose of image compression, as shown in the following demonstration.

http://neuron.eng.wayne.edu/bpImageCompression9PLUS/bp9PLUS.html

The African Chief has a variety of compression programs listed here, including units for Delphi and Turbo Pascal. Techniques supported include LZSS and Zip. Most appear to include source.

http://ourworld.compuserve.com/homepages/African_Chief/

DATA FORMATS AND COMPRESSION ALGORITHMS USING WAVELET PACKETS Version 1.4, 24 May 1990. Mladen Victor Wickerhauser, Numerical Algorithms Research Group, Department of Mathematics,Yale University,New Haven, CT 06520. Includes some documentation.

http://pascal.math.yale.edu/pub/wavelets/software/wplib/

Multiply-free Arithmetic Coding Implementation - Compression version 0.0.0
Gordon V. Cormack Feb. 1993
University of Waterloo cormack@uwaterloo.ca
This source code has some traditional freeware licensign terms embedded in the code

http://plg.uwaterloo.ca/~ftp/dmc/arithshiftc.c

The package consists of the following modules:

• H.263/H.263+ codec, C source code
• Input and Output Modules, C source code
• Configuration file parser/interpreter, C source code
• Graphical User Interface, MS-Windows object code only
• Support tools, C source code
• All necessary header and resource files
• Makefiles and Project files for UNIX and MS Developer Studio
• Executables for MS-Windows

DCL User comment:Not as easy to download from this site as it once was. Software they are selling has a few bugs.

http://www.ece.ubc.ca/spmg/h263plus/h263plus.html

What appears to be a course or lecture outline on speech coding.

http://svr-www.eng.cam.ac.uk/~ajr/SA95/node78.html

An in-place Huffman code length calculation demonstration from Alistair Moffat. The abstract of that paper may be fetched from this location.

http://www.cs.mu.oz.au/~alistair/inplace.c

A SET of 23 images totalling 27,133,146 bytes. The file type is RAS, does that mean that the files are a simple raster dump? I’m not sure. These files are listed in a few different places as being used in benchmarks.

ftp://ipl.rpi.edu/pub/image/still/KodakImages/color/

The second edition of Managing Gigabytes: Compressing and Indexing Documents and Images by Ian H. Witten, Alistair Moffat, and Timothy C. Bell, is now available (May 1999), published by Morgan Kaufmann Publishing, San Francisco, ISBN 1-55860-570-3.

Please use
this link to purchase the book through Amazon.com. Your purchase will help support this web site.

http://www.cs.mu.oz.au/mg/

Reputedly good BWT implementation, no source.

ftp://ftp.cdrom.com/pub/sac/pack/ba099b.zip

The 2000 IEEE Workshop on Speech Coding will be held from September 17-20,
2000, at Lake Lawn Resort, Delavan, Wisconsin, USA.

http://www.speechcoding.org/

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 Martin describing the range encoder.

http://www.compressconsult.com/rangecoder/

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 help support this web site.

http://www.libpng.org/pub/png/pngbook.html

8×8 is a leading manufacturer of digital telecommunication products, including both central office and customer premise equipment for Internet Protocol (IP) telephony.

http://www.8x8.com/

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.

http://www.aladdinsys.com/

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.

http://www.ucsc.edu/currents/99-00/10-11/huffman.html

PKWare’s site. PKWare is the vendor of PKZip.

http://www.pkware.com

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.

http://corpus.canterbury.ac.nz/