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Standard ECMA-151 Data Compression for Information Interchange - Adaptive Coding with Embedded Dictionary - DLCZ Algorithm
An LZW variant that has been adopted as a standard by the ECMA.
Standard ECMA-159 Data Compression for Information Interchange - Binary Arithmetic Coding Algorithm
The ECMA has a standard defintion for Arithmetic Coding.
Standard ECMA-321 Streaming Lossless Data Compression Algorithm (SLDC)
Standard ECMA-222 Adaptive Lossless Data Compression Algorithm
This page has the standard publication that defines ECMA-222, which is also apparently known as ALDC. I don’t know where this standard is used.
New Audio Coding Method Perfect for Internet
Les Atlas at the University of Washington has developed a new method for coding speech and music for transmission over slow lines. The technique, called fine-grain scalable audio encoding, prioritizes the most important part of the signal, allowing reconstruction at the remote end even if the face of lost packets.
http://www.eurekalert.org/pub_releases/2001-05/UoW-Ntfs-1305101.php
Jules Gilbert
Jules Gilbert has made a number of interesting and provocative posts to comp.compression. His claims have been met with vocal objections, but lack of public resolution will hamper the interested researcher.
http://groups.google.com/groups?as_ugroup=*compression*&as_uauthors=Jules%20Gilbert&hl=en
Advanced Zip Repairer Version: 1.20
Advanced Zip Repairer(AZR) is a powerful tool to repair corrupted Zip files and Self Extracting files(SFX). It can recover your data in zip archives as much as possible, so to minimize the loss in file corruption. Currently AZR can fix all sub-types of zip files and all kinds of self-extracting files, also it will provide […]
Nancy codec to give MPEG-4 a run for its money
Nancy is the name of a lightweight video codec being used to send video email in the J-Phone design in Japan. The proprietary algorithm uses something called the Structured Meta Scale Polygon to compress data with fewer MIPS than its competition. Nancy can compress and decompress 30 fps at QCIF resolution with as little as […]
UCF VLSI and Data Compression Lab
The University of Central Florida Data Compression Lab has a lot of interesting stuff here. More than just academic papers, for example the M5 online compression utility!.
M5 Online Compression Utility ver 1.0.1
The University of Central Florida has this web page which allows you to upload a file and then compress it using a wide variety of algorithms.
Latest Publications from UCF
Latest compression papers here. When this site was first crawled, the papers covered a wide variety of topics in both lossless and lossy compression.
ACDZip
ACDZip is a zipping and unzipping program that gives you the power to compress image, audio, video and document files. It includes fast image previews and is ideal for opening zip files, backing up files, saving hard disk space, preparing files for distribution and protecting them with encryption and passwords.
http://www.acdsystems.com/English/Products/ImagingProducts/Utilities/ACDZip/index.htm
PalmZLib
A port of Zlib to the Palm O/S platform. Creates a free shared library, and reportedly is used in one app to decompress PNG images.
Sample pages on DCT
Sample pages on line from the book Discrete Cosine Transform: Algorithms, Advantages, Applications by Kamisetty Ramamohan Rao, P. Yip. The first 6 pages of the book are excerpted here, giving a complete history of the DCT.
vcodex links page
A set of links to various video coding resources, maintained by Iain Richardson, author of “”Video Codec Design.”
MacMPEG2Decoder
This is an MPEG2 to QuickTime decoder for the Mac. Free software!
Encrypted Compressed Transfer Protocol
This group aims to create a transfer protocol that has the functions of FTP and the advantges of HTTP. The main features will be encryption and compression. Work in progress - if you speak German you can learn more about the project
here.
Boost CRC Library
The Boost project is designed to put very high-quality peer-revied libraries in the hands of you and me. CRC checking has nothing to do with compression per se, but it is frequently used when archiving to validate results.
Privacy For Pictures
This paper from Jürgen Abel and Bill Teahan presents several preprocessing algorithms for textual data, which work with BWT, PPM and LZ based compression schemes. The algorithms need no external dictionary and are language independent. The average compression gain is in the range of 3 to 5 percent for the text files of the […]
Dali
Dali is a project at Cornell that aims to create a programming environment dedicated to the manipulation of video, audio, and image data. Naturally, this includes multiple codecs for various data types.
LightSpeed Website Optimizer
This program does as much optimization of your web pages as possible, all in an effort to reduce its size and hence the time it takes users to D/L the page. Free!
JPEG2000 Bi-directional Image Coprocessor Chip
Analog Devices makes a JPEG2000 processor that can process better than 10 Megapixels per second. This chip is targeted towards the digital still camera market. You can find a press release on the page that says initial pricing is $14 in 10K quantities.
http://products.analog.com/products/info.asp?product=ADV%2DJP2000
An Improved Data Structure for Cumulative Probability Tables
A paper by Alistair Moffat describing an improvement on Peter Fenwick’s method for maintaining cumulative probability tables. The pointer on this page leads to some source implementing said table.
Video Codec Design
Web page for a new book, Video Codec Design, to be published by Wiley in March 2002. Video Codec Design takes a design-based approach to image and video compression. The book covers the JPEG, JPEG2K, MPEG1/2/4 and H.261/3/L standards and gives detailed guidance on designing image and video compression applications.
DataCompression.info reader Eduardo M. said this […]
Lectures on Statistical Modeling Theory
A paper by Jorma Rissanen, IBM Almaden Research Center.
VIPER - The JPEG Tutorial
The Video and Image Processing Laboratory at Purdue has a tutorial page on JPEG. Good place to start when looking for introductory material.
http://stargate.ecn.purdue.edu/~ips/tutorials/jpeg/jpegtut1.html
CMPE 263 Handouts by Glen Langdon
A set of handouts for a survey course on Data Compression, inlcuding papers on various types of coding, information theory, and more. An academic approach to the topics but quite accessible.
ACM Multimedia 2002
The ACM Multimedia conference for 2002 takes place December 1-6, 2002 in beautiful Juan-les-Pins on the French Riviera. Get your submissions in quick before the show fills up.
Toshiba Announces MPEG-4 Support Chips
Toshiba is creating MPEG-4 support chips that vendors are looking to included in mobile handset. This article notes that the chipset will be designed to work with specific baseband hardware, such as Qualcomm’s, and might not work elsewhere.
Oak Technology JPEG Image Processor
The PM-36 is a chip that is touted as processing up to 110 MB of data per second. Oak says it is suitable for copiers, printers, scanners, etc.
http://www.oaktech.com/products/imaging/processors/icodec/pm36.html
