Author Page
Iterated function systems and compression
An entry from a web page entitled “Fractal Questions and Answers”.
http://www.softlab.ntua.gr/miscellaneous/faq/fractal/faq-doc-11.html
Compression Research
This page contains information and links which are small a sampling of compression research that has been performed using the Lena image.
Fractal Image Compression
An entry from some sort of online encyclopedia giving a quick overview of Fractal Compression.
Wavelets for Motion and Video Coding
A bibliography containing links to numerous papers on video coding, with links to authors as well. This is a chapter from the massive Annotated Computer Vision Bibliography.
http://iris.usc.edu/Vision-Notes/bibliography/compute83.html
The Leipzig Paper Collection on Fractal Image Compression
A giant bibliography on Fractal Image Compression. Links to online versions of some, but far from all, papers.
ftp://axes.informatik.uni-leipzig.de/pub/Fractal/papers/README.html
Application of the BSP Model in Fractal Image Compression
An MS dissertation, with the complete text online.
The VCDIFF Generic Differencing and Compression Data Format
A format that can be used to send the differences between documents with some efficiency. This is part of a proposed extension to the HTTP standard.
David Clunie’s Medical Image Format Site
David Clunie is the chair of the DICOM standards committee, and has a wealth of links on this page to information related to medical imaging.
HOWTO: MPEG Compression of 2-D Data Files
Roman Zaritski explains the arduous processes he went through learning how to convert his simulation data to MPEG format. Short and simple, and if you have a Linux system you can probably recreate this work pretty easily.
http://www.linuxjournal.com/article.php?sid=6273&mode=&order=0
HTML Page Guardian
This product is used to protect the source of your HTML pages, which it does using “three layers of encryption.” I don’t know how that works, but they do advertise that LZW compression is an optional part of the process, so they earn a spot in DataCompression.info.
Algorithm for Fast Fractal Image Compression
Fractal image compression is a promising new technology that may successfully provide a codec for PC-to-PC video communications. Unfortunately, the large amount of computation needed for the compression stage is a major obstacle that needs to be overcome. This paper introduces the Fast Fractal Image Compression algorithm, a new approach to breaking the “speed problem” […]
A Non Uniform Segmentation Optimal Hybrid Fractal/dct Image Compression Algorithm
by Gerry Melnikov, Aggelos K. Katsaggelos. In this paper a hybrid fractal and Discrete Cosine Transform (DCT) coder is developed.
Letter frequency in normal English text
No documentation or hint of how this page was created, but it purports to give you some stats on the frequency of characters in English text.
Text compression for embedded controllers
Some simple BASIC routines to compress data without extravagant data or code space. The author seems to indicate this isn’t Huffman coding, but doesn’t say what it is.
DSPWorx Cheetah - DSW2000S Chip
This System-on-chip provides you with all the building blocks you need to perform several different kinds of compression and decompression, including MPEG, JPEG, and JPEG2000.
Ultra GIF Optimizer
Ultra GIF Optimizer is a powerful tool for optimizing GIF images. It can makes your web page load faster,save your server bandwidth charges and disk space! This is a commercial product, but it looks like you can download it and have a trial session.
Zinf Audio Player
The Zinf audio player is a simple, but powerful audio player for Linux and Win32. It supports MP3, Ogg/Vorbis, WAV and Audio CD playback, SHOUTcast/Icecast HTTP streaming, RTP streaming, a powerful music browser, theme support and a download manager. Zinf is based on the FreeAmp source code. However, AMP® is a trademark of PlayMedia Systems, […]
TCompress Component Set
File and database compression components for Delphi. Compress to/from file, memory, and blob. Uses RLE, LZH, and LZW. Shareware.
Version 7.0 was released in September of 2002.
Interactive JPEG Optimizer
A tool to help you reduce the size of your image files with little or no reduction in image quality. Demo version available, fully functional but stamps output files with a “Demo” label.
Forgent Network Inc. claims IP-rights for JPEG
A position paper from Dr. Klaus Jung and Prof. RuediSeiler, representing Algo Vision LuraTech GmbH. They show in some detail that Forgent’s claims on a patent that covers JPEG are not valid.
Reader John F. said: Goodbye Forgent and your lawyer pals at Jenkens and Gilchrist! We’ll see who has the last laugh on this deal, […]
http://www.algovision-luratech.com/company/news/statement_seiler_jung_en.pdf
Advanced WMA Workshop
This product is used to convert audio files from one format to another. The programs know how to do various conversions between WMA, MP3, and Ogg Vorbis. It’s also smart enough to do CD ripping. This appears to be shareware.
Audio Conversion Wizard
Audio Conversion Wizard is “All to All” converter of digital audio formats with friendly Wizard-style interface, which helps you easily convert:
WMA to MP3, OGG Vorbis, WAV PCM
WMA to WMA (resampling)
MP3 to WMA 8, OGG Vorbis, WAV PCM
MP3 to MP3 (resampling)
OGG Vorbis to WMA 8, MP3, WAV PCM
OGG Vorbis to OGG Vorbis
with ID3 Tag v2 […]
Windows Media 9 Series
Microsoft’s web page for all things releated to the new Windows Media Player and more. At this time you can download the beta version of the new player, get information, and sample various media.
Reader Serg N. commented: Very good quality, support for [very] low bitrates, lossless mode. It’s not open source, but it’s free!
DecMPA - Simple MPEG Audio Decoder Library
The goal of DecMPA is to provide simple and efficient MPEG audio decoding routines, nothing more and nothing less. It does not contain any playback functionality - basically you just shove MPEG audio data in and get decoded PCM audio data out. Everything that is not directly connected with MPEG decoding is beyond the scope […]
Tremor - Fixed Point Ogg Vorbis Decoder
The folks at Ogg Vorbis would like to see their audio format work its way into some hardware players. One good effort towards making this happen is a fixed=point implementation of the algorithm, which can then presumably be ported to machines using cheaper CPUs that lack the sophisticated FPUs of our desktop machines.
LHA Notes
Nice detailed documentation on the structure of an LHA file. If you’re going to attempt to support LHA files, you need a pointer to this doc.
http://homepage1.nifty.com/dangan/en/Content/Program/Java/jLHA/Notes/Notes.html
Data Compression Site
This site is in Russian, so I am not able to tell you much about it. It has links to some papers, and seems to have a link to PDF files that comprise much of a book on compression.
Reader Dan L. says The best site about comression!
A Method for the Construction of Minimum-Redundancy Codes
The famous paper by David Huffman, as originally published in the Proceedings of the I.R.E.
http://compression.graphicon.ru/download/articles/huff/huffman_1952_minimum-redundancy-cod
es.pdf
TCompLHA component set
A Delphi component. TCompLHA helps you create and manage archives compatible with the popular freeware LHArc and LHA utilities (these archives can also be processed by the popular WinZip program if you have LHA). Simple one-step methods such as Scan, Compress, Expand, Delete and Verify make archive management very easy. In addition it includes the […]
Streambox Action
Streambox ACTION is an easy to use video encoding application for serious amateurs and webmasters. ACTION goes beyond simple “file save” routines in video editors, allowing you to interactively optimize your video for specific streaming data rates while preserving video quality. ACTION is specifically designed to produce output optimized for the best progressive […]
