Data-Compression.org

data compression link collection

Jpeg2000 : Image Compression Fundamentals, Standards, and Practice

Published in Books, JPEG-2000

by David S. Taubman, Michael W. Marcellin. This rather pricey book is listed as a reference for engineers and researchers who want to understand the JPEG2000 standard. Taubman is the author of the Kakadu tools, which are included on the CD (licensing terms unknown.) Use the link on this web page to buy the book - you’ll help keep this site on line.

http://www.amazon.com/exec/obidos/ASIN/079237519X/theinternetdatac

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Posted in February 3rd, 2002

A Known Plaintext Attack on the PKZIP Stream Cipher

A paper describing a way to brute-force ones way through PKZip’s encryption - requires a few hundred bytes of known plaintext.

http://citeseer.nj.nec.com/122586.html

         

Posted in February 3rd, 2002

Cringely on Coding

Bob X. Cringely says that a new coding technique would give us a 10X bandwidth improvement on cable lines.

http://www.pbs.org/cringely/pulpit/pulpit20020131.html

         

Posted in February 1st, 2002

QLFC - Quantized Local Frequency Coding

Florin Ghido has developed a BWT archiver, here for the taking. I believe this is free.

http://ghido.shelter.ro/Archive/QLFC.php

         

Posted in February 1st, 2002

The JPEG 2000 Standard

A presentation by Michael J. Gormish & Michael W. Marcellin, which was given at the DCC in 2000. Lots of information and figures, but as always, the slides without the talk leaves one wanting more.

http://www.rii.ricoh.com/~gormish/pdf/dcc2000_jpeg2000_joint_charts.pdf

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Posted in January 30th, 2002

An Overview of JPEG-2000

A paper by Michael W. Marcellin, Michael J. Gormish, Ali Bilgin, Martin P. Boliek that was published in the 2000 Proceedings of the DCC. Good information of only moderate complexity in an academic format.

http://www.rii.ricoh.com/~gormish/pdf/dcc2000_jpeg2000_note.pdf

         

Posted in January 30th, 2002

JPEG 2000: Worth the Wait?

A paper by Michael J. Gormish from Ricoh in Silicon Valley. History, rationale, results, and procedures.

http://www.rii.ricoh.com/~gormish/pdf/mwscs99_j2k_worthwait.pdf

         

Posted in January 30th, 2002

Adaron Zip Portal 1.56

Published in Commercial Programs, Zip

Yet another Zip/Archiving program tailored to the Win32 environment. Drag and Drop, XP-style icons, etc.

http://www.softartstudio.com/archives/adaron_zip_portal.htm

         

Posted in January 28th, 2002

Wikipedia entry: H.263

This Wikipedia entry describes the H.263 video compression standard. A short entry but it has a few valuable outside links.

http://en.wikipedia.org/wiki/H.263

         

Posted in January 27th, 2002

IETF AVT Working Group

Published in Video, Audio

This is the home page for the IETF group that reviews RTP packetization standards. Links on this page for all the drafts you can imagine for sending video and audio over RTP streams.

http://www.ietf.org/html.charters/avt-charter.html

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Posted in January 27th, 2002

RFC 2190 - RTP Payload Format for H.263 Video Streams

Published in Standards, Video

The IETF standard for delivering H.263 in RTP packet streams.

http://www.ietf.org/rfc/rfc2190.txt

         

Posted in January 27th, 2002

RFC 2429 - RTP Payload Format for H.263+ Video Streams

Published in Standards, Video

The second generation fo H.263 is working on supplanting the original. Naturally, we need a standard for sending H.263v2 packets over RTP streams.

http://www.ietf.org/rfc/rfc2429.txt

         

Posted in January 27th, 2002

Video Demystified

Published in Books, Video

This book promises to tell you everything you need to know about video, which includes pertinent compression issues: H.261, H.263, MPEG-1, MPEG-2, and other video formats. Please use
this link to purchase the book through Amazon.com. Your purchase will help support this web site.

http://www.video-demystified.com/

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Posted in January 27th, 2002

OpenH263 Software Implementation

The open source project to create an H.263 codec. No output yet!

http://sourceforge.net/projects/openh263-s/

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Posted in January 27th, 2002

ITU Standard : H.263

Links to the various parts of the H.263 standard on the ITU page. Get out your credit card if you want a copy - the ITU doesn’t give things away!

http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-H.263

         

Posted in January 27th, 2002

Wikipedia entry: Information Theory

The Wikipedia entry for Information Theory. The basic “Claude Shannon invented all this stuff” overview.

http://en.wikipedia.org/wiki/Information_theory

         

Posted in January 27th, 2002

Wikipedia entry: Linear Predictive Coding

The Wikipedia talks about LPC. A very short definition.

http://en.wikipedia.org/wiki/Linear_predictive_coding

         

Posted in January 27th, 2002

Wikipedia entry: Gzip

The Wikipedia entry for Gzip. Very short with just a couple of links.

http://en.wikipedia.org/wiki/Gzip

         

Posted in January 27th, 2002

Wikipedia entry: Speech Coding

The Wikipedia article on speech coding. A very few good definitions, and a very few good links.

http://en.wikipedia.org/wiki/Speech_coding

         

Posted in January 27th, 2002

Wikipedia Entry: Algorithmic Information Theory

The Wikipedia entry for Algorithmic Information Theory. Explains the field of study that includes such interesting things as Kolmogorov complexity.

http://en.wikipedia.org/wiki/Algorithmic_information_theory

         

Posted in January 27th, 2002

Wikipedia Entry: Huffman Coding

The Wikipedia entry for Huffman Coding. A fairly terse definition.

http://en.wikipedia.org/wiki/Huffman_coding

         

Posted in January 27th, 2002

Wikipedia Entry: Arithmetic Coding

The Wikipedia entry for Arithmetic coding. Too short for anything other than a thumbnail sketch.

http://en.wikipedia.org/wiki/Arithmetic_coding

         

Posted in January 27th, 2002

Wikipedia Entry: Data Compression

The Wikipedia entry for the topic of Data Compression. Many links to other Wikipedia entries on this page, including MP3, JPEG, Fractal compression, etc.

http://en.wikipedia.org/wiki/Data_compression

         

Posted in January 27th, 2002

Wikipedia Entry: Run Length Encoding

The Wikipedia entry for RLE. Given the simple nature of RLE, this provides an adequate explanation.

http://en.wikipedia.org/wiki/Run_length_encoding

         

Posted in January 27th, 2002

Wikipedia Entry: LZW

The Wikipedia entry for LZW compression. Good overview with plenty of links.

http://en.wikipedia.org/wiki/LZW

         

Posted in January 27th, 2002

Wikipedia Entry: GIF

The Wikipedia entry for GIF. A reasonable amount of background and overview information.

http://en.wikipedia.org/wiki/Gif

         

Posted in January 27th, 2002

Wikipedia entry: PNG

The Wikipedia entry for PNG. Good overview with many relevant links to other entries in the Wikipedia.

http://en.wikipedia.org/wiki/Png

         

Posted in January 27th, 2002

Wikipedia entry: MNG

The Wikipedia entry for MNG. Fairly terse..

http://en.wikipedia.org/wiki/MNG

         

Posted in January 27th, 2002

Wikipedia entry: deflate

This Wikipedia entry describes the deflate compression algorithm. Very terse, could use an update from a DCL reader!

http://en.wikipedia.org/wiki/DEFLATE

         

Posted in January 27th, 2002

Wikipedia entry: MP3

This Wikipedia entry describes the MP3 audio format. A good overview with many helpful links.

http://en.wikipedia.org/wiki/Mp3

         

Posted in January 27th, 2002