Archives
Bit oriented input and output in Java
DevX published this nice piece describing bit oriented I/O in Java. This might not be directly related to Data Compression, but it is a requirement in nearly all data compression software. This site may require registration, I’m not sure.
http://archive.devx.com/java/free/articles/gt052002/gt052002-1.aspCal Tech improves on 3D compression
CNN reports on a research team at Cal Tech that has created a new algorithm for compressing 3D object representations. If you can figure out how it works from this article, send me an email!
http://www.cnn.com/2002/TECH/internet/05/24/3d.graphics.idg/index.htmlToshiba licensing MPEG-2 Codec
EETimes has an article about this new single-chip MEPG-2 codec built around Toshiba’s Media Embedded Processor architecture.
http://www.eetimes.com/story/OEG20020515S0040dczip
This is a free program that the author describes as a clone of WinZip. It is written entirely in Java and supports a nice variety of archive formats, including zip, jar, gzip, and bzip2 Requires Java 1.3, 1.4 is recommended. The 1.0 release shipped in May of 2002.
http://www.davidcampaign.net/dczip.htmlALZip
Another archiver, this one supports ZIP, ACE, RAR, TAR, and ZOO formats. This appears to be a Korean product - the web page is bilingual.
http://www.alzip.com/Almacom JPEG-2000 library
The page says:
The Almacom JPEG-2000 library was written in an effort to produce the cleanest and simplest implementation possible of the JPEG-2000 standard. We have put a particular emphasis on good architecture design and code simplicity, while at the same time providing an implementation as complete and efficient as possible.
DataCompression.info user Luca M. said […]
http://j2000.org/Compression and Coding Algorithms
by Alistair Moffat and Andrew Turpin. This book is scheduled for publication in 2002 by Kluwer Academic Publishers. This site has a table of contents and some sample pages to peruse while you wait for it to be printed.
This book now shows up as available on Amazon.com. Please use this
link
to purchase the book through Amazon.com. […]
On2 uses new video compression on film
CNet reports that On2 Technologies is using a feature film to demo their new compression technology. You can see “To Kill a Lawyer” over the Internet at several speeds ranging from 400 KBps up to 1MBps. The proprietary algorithm is called VP5.
http://news.com.com/2110-1023-896435.htmlZipCentral
ZipCentral is a free and easy to use zip file manager with all the utilities you need to manage your zip files. The goal of ZipCentral is to be the most robust freeware zip-package you can find today. It is a great tool for the beginner as well as the expert. Working with zip files […]
http://zipcentral.iscool.net/Japanese Lossless Video Codec
I’ll have to take the word of the submitter on this site - it is entirely written in Japanese. Any DataCompression.info user who is fluent in the language is invited to provide a more detailed description. There are a couple of zip files on the site that perhaps contain demo programs?
http://www.geocities.co.jp/Playtown-Denei/2837/LRC.htmGEMAC
This company sells an IP core that performs lossless data compression. Not sure what algorithm they are using, it is described as “GEMAC’s data compression algorithm.” This algorithm was first published at DCC ‘95, and is described as a hybrid of ZL1 and ZL2, created with the goal of maximizing compression rate.
http://www.gemac-chemnitz.de/IEEE Standard 1180-1990 accuracy test for IDCTs
From the archive: This archive contains a quick & dirty implementation of the IEEE Standard 1180-1990 accuracy test for inverse DCT. It is not guaranteed to be correct … but if you find any bugs, please let me know (by email totgl@cs.cmu.edu). Since the archive was created in 1993 I don’t know if you’ll […]
http://bmrc.berkeley.edu/ftp/pub/multimedia/mpeg/mpeg2/software/ieee1180.tar.gzread more from " IEEE Standard 1180-1990 accuracy test for IDCTs "
Florida Compression Scheme Nets Millions
This isn’t a new story, but the Florida Times-Union of Jacksonville gives a lot of detail in this treatment. A fellow named Madison Priest seems to have pulled in millions with his promises of hardware that can push high quality movies over conventional phone lines. Lots of interesting details, including the famous coax line hidden […]
http://www.jacksonville.com/tu-online/stories/050502/met_9322821.htmlElecard
This company has a roster of compression products, including an MPEG-2 Player, an MPEG-2 DirectShow Filter, and a Wavelet Image Compressor.
DataCompression.info user Kuka had this to say: Excellent mpeg player, and a lot of very useful mpeg tools.
Zipios++
A C++ open source library for accessing zip files. This is a work in development, which as of the current beta now has support for reading and writing Zip files. Distributed under the LGPL.
http://zipios.sourceforge.net/Image Compression - from DCT to Wavelets : A Review
by Subhasis Saha. A typical overview article, devoted to image compression, concentrates on JPEG and Wavelet-based methods. I don’t know where this article appeared, but it looks to be peer-reviewed quality.
http://my.engr.ucdavis.edu/~ssaha/sahaimgcoding.htmlread more from " Image Compression - from DCT to Wavelets : A Review "
Image Compression with Vector Quantization
This is billed as an introductory article with illustrations. I haven’t seen it - it requires free registration with this game development site. If you’re interested, please check it out and send me your thoughts.
http://www.gamasutra.com/features/20010416/ivanov_01.htmread more from " Image Compression with Vector Quantization "
Léon Bottou’s Publications
Léon has a very nice set of publications online here, generally in both DjVu and PS format. A total of 45 papers with titles such as “Managing drift in DCT-based scalable video coding” and “DjVu : Analyzing and Compressing Scanned Documents for Internet Distribution.”. Bless those who make their work available to the world on […]
http://leon.bottou.com/publications/index.htmlStack-run Image Coding
First sentence of the abstract says it all: We describe a new image coding approach in which a 4-ary arithmetic coder is used to represent significant coefficient values and the lengths of zero runs between coefficients
http://www.icsl.ucla.edu/~ipl/Publications/Journal/stack-run_image_coding.pdfWavelets and Subband Coding
by Martin Vetterli and Jelena Kovacevic. This book is a hefty academic tome, described on this web page as: a comprehensive and unified presentation of discrete and continuous wavelets, filter banks and subband coding, as well as multiresolution signal processing, is given. It is intended for practitioners and researchers in the fields of signal […]
http://www.andrew.cmu.edu/user/jelenak/Book/index.htmlLossless Image Coding Using Minimum-Rate Predictors
This page presents the source code from the paper of the given name. The software at this time only supports eight-bit grayscale, but is free for research purposes.
http://itohws03.ee.noda.sut.ac.jp/~matsuda/mrp/read more from " Lossless Image Coding Using Minimum-Rate Predictors "
