Wavelets are used for much more than just data compression. However, this page is confined to the uses of wavelets as a component of compression, usually for lossy image or sound compression. Note that the JPEG2000 algorithms get their own page.
Open source wavelet videocodec, previously developed by BBC. It uses
parametric affine motion compensation, arithmetic encoding and other
modern techniques. Surprisingly for the open source, it looks like the
project is well-documented.
Created: 23/09/2005
by Dmitriy VatolinMore...
A grey-scale wavelet compressor written in C. Includes pointers to source code and the paper presented on this work.
Created: 20/08/2000
by Mark NelsonMore...
The home of Wim Swelden's monthly Wavelet Digest. The home page includes some spiffy search capabilities, back issues, forum and so on.
Created: 19/11/1999
by Mark NelsonMore...
This page contains a summary of the Federal Bureau of Investigation's image coding standard for digitized fingerprints, developed and maintained by the FBI, Los Alamos National Lab, and the National Institute for Standards and Technology. The standard is a discrete wavelet transform-based algorithm referred to as Wavelet/Scalar Quantization (WSQ).
Created: 19/12/1998
by Mark NelsonMore...
Not a bad site on wavelets in common, JPEG2000 and digital signal processing using wavelets. The main content is books, papers, thesises, sources. Partially in Russian, but there are a lot of English papers. There is a steganography page as well.
Created: 11/07/2005
by More...
XWPL is an X based tool to examine one-dimensional real-valued signals using
wavelets and wavelet packets. It has been designed to be as easy to use as
possible for beginners. It is intended more as an educational and exploratory
tool than as a numerical analysis program, even though it uses fast, optimized
wavelet and wavelet packet transforms. NOT USING BECAUSE IT ISN'T SPECIFICALLY RELATED TO DATA COMPRESSION.
Created: 18/02/1999
by Mark NelsonMore...
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 processing and telecommunications, as well as applied mathematics and computer vision..
Created: 01/05/2002
by Mark NelsonMore...
Robert Estes (UCDavis - image compression research). Robert has pointers to many of his papers on this page. He has info on Wavelet-based image compression, image compression, plus some peripherally related topics such as image quality.
Created: 26/05/2003
by Mark NelsonMore...
Current research projects in our lab include research into vector quantization (VQ), wavelets, image compression, edge detection using VQ, VQ for image browsing, VQ design for noisy channels, halftoning, and color palette management.
Created: 04/05/2003
by Mark NelsonMore...
The University of Washington has a nice bibliography here, with pointers to books on Data Compression, VQ, Wavelets, and Information Theory.
Created: 04/05/2003
by Mark NelsonMore...
Aleks Jakulin has created a tutorial that will walk you through the necessary steps to compress images using a wavelet transform. The steps in the process are illustrated using Mathematica code. This page goes beyond a basic tutorial in that it shows a proposal to improve image rendering by adding noise.
Created: 21/03/2003
by Mark NelsonMore...
MrSID is a wavelet-based image format that seems to be pretty popular for people creating mapping databases (which tend to be huge.) This page has a nice little explanation, provided for you courtesy of the state of Massachusetts. MrSID is a proprietary format owned by LizardTech.
Created: 18/03/2003
by Mark NelsonMore...
Filip is interested in wavelets and image restoration. In addition to a nice page of links (navigate from the main page) he has some software, publications, test results, and more.
Created: 17/03/2003
by Mark NelsonMore...
A recent post to comp.compression had a pointer to this page, identifying it as a source of H.263 software. Sure enough, if you scroll down to the bottom of the page you'll find links to an H.263 decoder, plus a Windows H.263 player. Not to mention some Wavelet code from JP, and a few other interesting links.
Created: 25/02/2003
by Mark NelsonMore...
VisioWave is offering simple, modular, integrated and open-ended high-quality and reliable hardware and software solutions for compression, processing and real-time transmission of very high quality video over any network (IP, ATM, ADSL, cable, wireless, ...).
Created: 23/12/2002
by Mark NelsonMore...
WSQ by Aware is our implementation of the Federal Bureau of Investigation's Wavelet Scalar Quantization fingerprint compression standard. WSQ by Aware is the industry’s highest performing implementation of the FBI’s Wavelet Scalar Quantization (WSQ) digital fingerprint compression algorithm. WSQ is a wavelet transform-based compression standard, developed by the FBI for compression of digital fingerprint images.
Created: 13/12/2002
by Mark NelsonMore...
MotionWavelets is a software video codec that delivers real-time, high-quality video compression to the PC-based digital video user. Powered by a wavelet-based compression engine optimized for MMX processors, MotionWavelets compresses 640x480, 30 frames per second video with VHS quality, in real time on a PII/450MHz PC. MotionWavelets will compress greater than 60 fps 320x240 on any P/MMX 200MHz PC or above. MotionWavelets is available as a Video for Windows (VfW) installable codec and a Software Development Kit (SDK).
Created: 13/12/2002
by Mark NelsonMore...
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.
Created: 29/09/2002
by Mark NelsonMore...
by John D. Villasenor, Benjamin Belzer, and Judy Liao. A paper discussing the choice of filter bank for wavelet compression. PS format only.
Created: 15/09/2002
by Mark NelsonMore...
A C implementation of Shapiro's EZW algorithm. Performance is close/better than the reported results with the wavelet filters.
Created: 03/09/2002
by Mark NelsonMore...
Ian Kaplan's Wavelet and Signal Processing page has lots of articles and C++/Java source code implementing wavelet transform via the lifting scheme, the integer-to-integer wavelet transform and the best basis wavelet packet transform
Created: 03/09/2002
by Mark NelsonMore...
VcDemo is an interactive image and video compression (freeware) software package for Windows. It is intended as a tool for learning about compression techniques: from basic sampling and PCM to today's most advanced scalable embedded zerotree wavelet image compression technique and the MPEG video compression standard. VcDemo is an ideal tool for students to explore the possibilities of compression theory using textbook algorithms on real images. The package is also very suitable for on-line demonstrations in lectures. A user manual is available, as well as a set of exercises that can serve as home work.
Created: 01/08/2002
by Mark NelsonMore...
Eduard has a Java implemention of a Daubechie-4 Lifting Wavelet Transform followed by an EZW encoder with an Adaptive Huffman Encoder output stage. You can download the Java source from this page and give it a go.
Created: 20/07/2002
by Mark NelsonMore...
From the site: GWIC is a simple, fast and relatively efficient lossy image compression algorithm designed for compression of natural images. Currently both gray scale (8 12 and 16bpp) and RGB-images are supported, but in future support for alpha-channels is planned. GWIC is still in the middle of the designing phase, and thus should not yet be used in any real applications, since the file-format and algorithms are likely to change..
Created: 06/06/2002
by Mark NelsonMore...
A forum dedicated to the discussion of Wavelets. This link takes you to the French language version of the board - click on the "English" link on the left side of the page for English language discussion.
Created: 05/06/2002
by Mark NelsonMore...
Daniel Lemire is a researcher at the National Research Council of Canada. Some of his recent research interest is on wavelet-based prefix sum methods for On-Line Analytic Processing (OLAP). Some of his publications are relevant to compression techniques including a white paper on image compression by wavelets.
Created: 05/06/2002
by Mark NelsonMore...
Supporting material for a Wavelet course at Rowan University. There's quite a bit of detail here. I don't know if it stands on its own or whether it only works in conjunction with the course. Please check it out and provide feedback!
Created: 05/06/2002
by Mark NelsonMore...
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.
Created: 08/05/2002
by Mark NelsonMore...
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
Created: 01/05/2002
by Mark NelsonMore...
This example shows the effects of wavelet compression at various levels of quality and compares the wavelet compression result to the JPEG compression result.
Created: 07/04/2002
by Mark NelsonMore...
Our technology set is based on the Essential Video 4.0 codec, which is a flexible and dynamic codec which utilises a number of video compression techniques using our BestFirst algorithm; methods include vector quantisation, motion compensation and residual encoding.
Created: 02/03/2002
by Mark NelsonMore...
The wavelet group has links to books, publications, and people doing wavelet things. Link updated to new location January 2002
Created: 25/01/2002
by Mark NelsonMore...
S. Baum at Texas A&M keeps up a pretty good looking page of links to wavelet resources, categorized by type. Note that this page has apparently been zipped up to save space. The full content is inside the gz file.
Created: 01/01/2002
by Mark NelsonMore...
Many publications spanning a wide variety of image processing topics. Dr. Po has papers here on both wavelet and fractical compression, motion estimation, etc.
Created: 30/12/2001
by Mark NelsonMore...
This page reflects the necessity of developping collaborations (and intensify those that already exist) between the nine research groups from six different european countries, with the ultimate common goal of applying wavelet-based methods to complex industrial problems.
Created: 24/12/2001
by Mark NelsonMore...
Geoff Davis's home page. Geoff has published several of his wavelet papers on the web, including an interesting analysys of Fractal compression in terms of wavelets. At one time Geoff Davis was responsible for a Wavelet toolkit, but it isn't on his new site. Please forward pointers is you find it.
Created: 07/12/2001
by Mark NelsonMore...
This article describes a variant on BWT that doesn't use the cyclical rotations of strings used for BWT, but a different scheme. DCL reader points to a Burrows paper showing that this scheme is suboptimal.
Created: 03/09/2001
by Mark NelsonMore...
by Ali N. Akansu, Richard A. Haddad. This book covers the areas you need to know in order to understand much of modern singal compression techniques. The second edition was issued in January, 2001.
Created: 11/08/2001
by Mark NelsonMore...
The wavelet warehouse has a large repository of wavelet filters. These are coefficient files only, suitable for use with MATLAB or other software. The page also has links to a couple of PDF-format papers, plus references to a few more not available online.
Created: 04/07/2001
by Mark NelsonMore...
Luratech has plugins and an SDK for both their proprietary format and JPEG2000. Products come in a dizzying array of options, ActiveX controls, C-SDK, Java-SDK, plugins for PhotoShop or browsers. Note that some of their products can now be downloaded as freeward!
Note: What was once LuraTech is now Algo Vision LuraTech.
Reader Tom H. says: Luratech is the fastest licensable SDK out there right now
Created: 16/05/2001
by Mark NelsonMore...
Links to the papers of Tilo Strutz, concentrating on wavelet based compression. Some papers published in German. Note that Tilo Strutz has added a textbook on image compression to his list of publications.
Created: 04/01/2001
by Mark NelsonMore...
Subtitled Basics, Standards and Wavelet-Based Algorithms for Image and Video Coding. This German-language textbook contains full source code (ANSI-C) of a wavelet-based image coder.
Created: 04/01/2001
by Mark NelsonMore...
Summus makes an SDK that creates compressed files in a proprietary format. They give away a plugin that can be used to view the compressed files in the normally-supported browsers.
Created: 03/10/2000
by Mark NelsonMore...
by Andrei Khodakovsky, Peter Schroder, Wim Sweldens. Compressing 3-D object representations is a good thing. Even better is allowing progressive display of these objects. The techniques in this paper are to be applied to geometric meshes.
Created: 08/09/2000
by Mark NelsonMore...
The Signal Processing and Coding Laboratory (SPACL) at The University of Arizona has some papers on line, plus some information on their current projects. They seem to be interested in wavelets, quantization, and signal coding.
A DCL reader complained: Very little useful information on the website. On topic, but not helpful at all.
Created: 15/07/2000
by Mark NelsonMore...
Earth Etc. makes a free wavelet based compressor that somehow ties in with their web server product. In theory they supply plugins that you can use to view the compressed images.
DCL reader JJB had this to say: Limited in size and other features in the free version as well as limited documentation in the free version, but decent examples if you can learn from those (you just can't learn what they don't show there). Very specific to Geo-Spacial images (satelite images and the like), decent compression, speed and recovery of all sizes equal to or less than original (use power of 2 sizes for best results)..
Created: 11/07/2000
by Mark NelsonMore...
Home of the WaveStat algorithm, which appears to be a fairly conventional wavelet-based image compressor. Links on this page to a paper describing the technique, but no code as far as I can tell.
Created: 04/07/2000
by Mark NelsonMore...
A bibliography of Pamela C. Cosman's papers, with links to many that are available on line. Many papers on wavelet-based and VQ image compression, along with a few miscellaneous others.
Created: 02/07/2000
by Mark NelsonMore...
A proprietary image compression system using wavelets by MeVis Technology. Browser plug-ins available, naturally. Links to German language version of the page.
A DCL reader had this to say: Achieves high compression and has a useful interface. I have used only the non-registered version 2.6e
very powerful and probably superior to JWizard by Pegasus.
Created: 02/07/2000
by Mark NelsonMore...
This ftp site has copies of a number of papers by Christopher M. Brislawn. They include various ocuments on the FBI fingerprint compression standard, and a copy of the standard itself.
Created: 02/07/2000
by Mark NelsonMore...
To quote the page: The DWIT video codec is a real-time Differential Wavelet Integer-based Transform software video codec that runs on SGI Octane and O2 workstations. The codec is written in C++ and is distributed under GNU Copyleft.
Created: 08/06/2000
by Mark NelsonMore...
Compression Engines, Inc. has a file format called WIF, which stands for Wavelet Image Format. They licensed it from HARC, and have created and ActiveX control, a browser plugin, a standalone program, and the requisite Photoshop plugin. Check it out.
Created: 03/06/2000
by Mark NelsonMore...
This site advertises a bunch of nifty looking codecs, including TELP, JPEG, Speech, MPEG, and wavelet compressors. I can't quite determine exactly what form the products come in.
Created: 03/06/2000
by Mark NelsonMore...
Vladimir has pointers to a batch of his papers here, which seem to concentrate on image compression, including VQ and Wavelet based compression. Plus many links to image compression, fractal, and wavelet pages.
Created: 03/06/2000
by Mark NelsonMore...
Paper by C. Valens describing this algorithm which is frequently used in wavelet based data compression algorithms.
Created: 04/05/2000
by Mark NelsonMore...
This is a freeware image compressor that does wavelet based compression. Lurawave appears to have all their products and documentation available in German language as well as English. In order to establish their products they are making much of it available as freeware.
Created: 07/02/2000
by Mark NelsonMore...
Edward J. Delp describes his wavelet-based coding system for color images using a luminance/chromanance color space.
Created: 23/01/2000
by Mark NelsonMore...
Edward J. Delp and pals have created a rate-scalable video codec that uses a wavelet based codec with motion compensation.
Created: 23/01/2000
by Mark NelsonMore...
Edward J. Delp has a big batch of papers on line. This includes a big batch that deal with Image and Video compression.
Created: 23/01/2000
by Mark NelsonMore...
Antonio Ortega at USC has quite a few compression related papers on line. They include papers on wavelets and quantization.
Created: 23/01/2000
by Mark NelsonMore...
The University of Bath has a group that is advertised as "world leaders in still image and video coding." They appear to be interested in lossy compression based on DCT, Wavelets, and Fractal compression. This is their home page.
Created: 23/11/1999
by Mark NelsonMore...
The following short courses are offered in 1998-1999, based on the book A Friendly Guide to Wavelets by Gerald Kaiser:
A Detailed Introduction to Wavelets With Applications to Image Analysis and Lossless Coding
A Detailed Introduction to Mathematical and Physical Wavelets
With Applications to Image Analysis, Sonar and Radar
Created: 19/11/1999
by Mark NelsonMore...
This page has references to a huge number of Wavelet-related research papers. I don't know how many of them are online, but it is quite a treasure trove for the curious.
Created: 11/11/1999
by Mark NelsonMore...
Clemen has some pages here that discuss Wavelet theory in general, as well as specifics on the Fast Lifting Wavelet Transfrom and Embedded Zerotree Wavelet Encoding.
Created: 05/11/1999
by Mark NelsonMore...
Includes WaveVideo, PPMZ, LZP, and WaveCode. Charles has source for most of this stuff available elsewhere on his page.
Created: 04/11/1999
by Mark NelsonMore...
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.
Created: 02/11/1999
by Mark NelsonMore...
Links from the Yale Computational Mathematics Group. Contains links to software and papers. Most of the links don't show up in this database as they are not necessarily related to using wavelets for data compression.The papers that appear off this page are all compressed postscript and have not been added to the database.
Created: 18/02/1999
by Mark NelsonMore...
By Robert W Buccigrossi and Eero P Simoncelli, GRASP Laboratory Technical Report #414, University of Pennsylvania, May 30, 1997. This page contains the abstract, with links to the full paper, as well as software associated with it.
Created: 24/12/1998
by Mark NelsonMore...
