21. Wave:Wavelets 1 Wavelet Analysis. http://paos.colorado.edu/research/wavelets/wavelet1.html

Wavelet Analysis Introduction Wavelets Algorithms Monte Carlo References ... back to PAOS Introduction Many time series in geophysics exhibit non-stationarity in their statistics. While the series may contain dominant periodic signals, these signals can vary in both amplitude and frequency over long periods of time. Fig. 1. The simplest method for analyzing non-stationarity of a timeseries would be to compute statistics such as the mean and variance for different time periods and see if they are significantly different. In Figure 1 we have also plotted the running 15-year variance, as a measure of total power inherent in the signal versus time. One can see that ENSO had more variance during 1880-1920 and also since 1950, with a relatively quiet period during 1920-1950. While the running variance tells us what the overall strength of the signal was at certain times, it suffers from two major defects: [Time Localization] The shape of the curve is highly dependent on the length of the window used. Fifteen years was chosen above as a compromise between either too-much smoothness (say using a 30-year window), or too-little (a 5-year window). An ideal method would allow different window sizes depending on the scales that one is interested in. [Frequency Localization] The running variance contains no information on the frequency of a periodic signal, only its amplitude (and that only if the window is chosen widely).

22. Perfectly Scientific - Home the scientific algorithm company. Experts in compression, wavelets, FFT, general transforms, color graphics, Monte Carlo, fractals, convolution,signal processing, matrix algebra, genetic algorithms, number theory. http://www.perfsci.com/

PSI news New largest prime number! We have a physical poster . The prime is , discovered in May 2004. Newly free software PSI offers unique services that are hard to find elsewhere. We specialize in industrial algorithm problems. Contact us to help solve your specific algorithm problems. PSI offers software that embodies classical algorithms and/or our proprietary algorithms. As for hardware, PSI designs and supports laboratory peripherals for Mac OS X. See our software and hardware page PSI also provides a unique collection of scientific souvenir and gifts.

23. The Wavelet Tutorial The Engineer's Ultimate Guide To Wavelet The Wavelet Tutorial The Engineer's Ultimate Guide to Wavelet Analysis This site's author created this unique wavelet tutorial to help people with no prior knowledge of wavelet theory. In http://rdre1.inktomi.com/click?u=http://engineering.rowan.edu/~polikar/WAVELETS/

24. Sampling Theory In Signal And Image Processing Publishes referred articles on the development and applications of sampling and interpolation theory, wavelets, tomography,the Gibbs phenomenon. Comes out three times a year. http://www.geocities.com/jerria12/

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25. Wavelets At Imager wavelets at Imager. We re releasing some of our work via this page, as described below. The Course wavelets and their Applications in Computer Graphics . http://www.cs.ubc.ca/nest/imager/contributions/bobl/wvlt/top.html

Wavelets at Imager Here at Imager, we've been doing some work with wavelets, those clever little multiresolution basis functions. We're releasing some of our work via this page, as described below. The Course "Wavelets and their Applications in Computer Graphics" This course, taught at SIGGRAPHs '94 and '95, was organized by Dr. Alain Fournier . It includes presentations by a number of experienced wavelet researchers. You can download the notes accompanying the SIGGRAPH '95 presentation of this course . These are in the form of a (UNIX) compress ed file 3.4MB in size that uncompresses to an 11.0MB PostScript(tm) file. The printed document is 239 pages long. These notes are provided through the courtesy of Dr. Fournier. If you have difficulty downloading this file over the Web, it is also available via FTP at node "ftp.cs.ubc.ca" in directory "/pub/local/bobl/wvlt" as file "notes.ps.Z". wvlt - The Imager Wavelet Library The Imager Wavelet Library (wvlt) is a small set of routines that allow the user to manipulate wavelets. This package includes C source for the library and for three sample binaries that call it, some demos, and some (sparse) documentation. It was described in the above course. You can download a UNIX shar file (its size is about 164KB) of the most recent release, 2.1, of this package. Alternatively, you can download

26. The Ondelette.com Community: Wavelets, Signals, Images, Video Image and signal processing, wavelets, and spectral analysis. Offer consulting service and advanced Web technology for forums. Also offer courses and seminars. http://www.ondelette.com/index_en.html

This URL is obselete. Please go to http://www.ondelette.com/indexen.html

27. A Practical Guide To Wavelet Analysis A Practical Guide to Wavelet Analysis Christopher Torrence (National Center for Atmospheric Research) and Gilbert Compo (NOAA/ CIRES Climate Diagnostics Center) have put together this Website for http://rdre1.inktomi.com/click?u=http://paos.colorado.edu/research/wavelets/&

28. SIMPLIcity: Content Based Image Retrieval / Search (1995-, WIPE, Virtual Microsc Largescale content-based image retrieval by James Wang, Jia Li, and Gio Wiederhold. Uses wavelets to Classify web sites and web images. http://www-db.stanford.edu/IMAGE

Content-based Image Retrieval Project (1995-2000, Stanford University; 2001-, Penn State University) WWW-DB.Stanford.EDU/IMAGE wang.ist.psu.edu/IMAGE >> This page holds information related to this project before August 2000. >> For up-to-date info and demos related to this project, go to the new page http://wang.ist.psu.edu/IMAGE This content-based image search and automatic learning-based linguistic indexing project was started in 1995 when James Z. Wang developed an art image retrieval system for the Stanford University Libraries. He has later worked for the IBM QBIC project, the NEC AMORA project, and the AI Center of SRI International. From 1999 to 2000, the project was funded by the National Science Foundation under the TID (Trusted Image Distribution) project (PI: Gio Wiederhold). TID is part of the NSF Digital Library Initiative II (DLI-II) program . The technology research has been continued at Penn State University since 2001, with funding from the National Science Foundation ITR (PI: James Z. Wang), PNC Foundation, and SUN Microsystems. If you have any questions or comments about the image retrieval project, please send a message to James Z. Wang

29. Wavelets wavelets. Tutorials Wavelet Tutorial web sites Kapitel 3 WaveletKompression; Bibliographies on wavelets; Wavelet Group Karlsruhe; http://www.thur.de/~Voland/Wavelets.html

Wavelets Tutorials: Wavelet Tutorial by Robi Polikar (very good!) Tutorial on Wavelet Analysis of Experimental Data Tutorials by Clemens Valens Papers by me (in german) Waveletbasierte Bildkompression in der Anwendung (Vortrag, 22 Seiten, 1.5 MB) Wavelets: Grundlagen und Anwendung in der Bildkompression (Bericht, 23 Seiten, 1.4 MB) Grundlagen / Basics: Amara's Wavelet Page Mathsoft Wavelet Resources WaveLab@Stanford Wolfram Research Wavelet Explorer ... The Voice - Seeing with your ears Homepages von Wavelet/Compression-Forschern / scientists homepages: Andreas Uhl Neil Getz Tilo Strutz Amara Graps ... Robert M. Gray Java Wavelet-Sources altavista: +java +wavelet +source Kommerzielle Wavelet-Forschung / Commercial research: Summus, Ltd. Lightning Strike CREW SPIHT ... LuRaTech Kompression allgemein / Compression in general: Witten + Co. INTERNET PARALLEL COMPUTING ARCHIVE ftp.imag.fr/pub1/compression Compression Presentation> ... mathtools.com EMail: Voland@Jena.Thur.de This Page: www.thur.de/~Voland/Wavelets.html Last modified: 2000-01-03 20:18:59 MET by Created with: XEmacs

30. Leeds Annual Statistical Research Workshops Organised by the Department of Statistics, University of Leeds, Leeds, UK. Some papers are online. 23rd meeting LASR2004 Bioinformatics, Images and wavelets; 68 July 2004. http://www.amsta.leeds.ac.uk/Statistics/workshop/

Leeds Annual Statistical Research Workshops Department of Statistics The University of Leeds, Leeds, LS2 9JT, U.K. Tel: 0113 343 5101, Fax: 0113 343 5090 The Leeds Workshop is a well established annual event now looking forward to its 23rd year. Although begun as an internal event, it now enjoys the support of a number of visitors each year from other universities and research bodies from home and abroad. These workshops usually extend over three days with input by one or more invited speakers. Over recent years, the theme of the workshop has reflected the growing, but not exclusive, departmental interest and expertise in bioinformatics, image analysis and shape analysis. LASR2004 - Bioinformatics, Images and Wavelets. 6 - 8 July 2004. LASR2003 - Stochastic Geometry, Biological Structure and Images (Workshop Proceedings now available online.) LASR2002 - Statistics of large datasets: Functional and image data, bioinformatics and data mining (Some of the papers from the Workshop Proceedings are now available online.) LASR2001 - Functional and Spatial Data Analysis (Workshop Proceedings are now available online.)

31. Gilbert Strang's Home Page MIT. Lecture notes, text and research papers in numerical linear algebra and wavelets. http://www-math.mit.edu/~gs/

Gilbert Strang Professor of Mathematics Department of Mathematics Massachusetts Institute of Technology Room 2-240 Cambridge MA 02139 Phone: (617) 253-4383 Fax: (617) 253-4358 Send e-mail to: gs@math.mit.edu Short Biography: Short Biography Curriculum Vitae: Curriculum Vitae Books and Publications Complete List of Publications Recent Wavelet Papers Textbooks Visit the new Wellesley-Cambridge Press website 2000-2001 Classes 18.06 Linear Algebra (The 18.06 lectures for Fall 1999 are now on the web.) 18.085 Applied Mathematics and Engineering Mathematics 18.327 Wavelets and Filter Banks

32. Wavelets In The Statistics Group At The University Of Bristol See our postgraduate opportunities page Introductory material on wavelets. Click on the Lennon image to see a video of the image being built by wavelets. http://www.stats.bris.ac.uk/pub/reports/Wavelets/Wavelets.html

33. Andreas Klappenecker's Home Page Assistant professor at Texas A M. Quantum computing, wavelets. Includes lecture notes and preprints in pdf format. http://www.cs.tamu.edu/faculty/klappi/

Andreas Klappenecker Assistant Professor Department of Computer Science College Station, TX 77843-3112 USA Office 509B Harvey R. Bright Building Phone FAX Email klappi @ cs.tamu.edu Office hours M 1:45-2:45pm, T 11:00am-noon, or by appointment Research Publications Recent Talks Efficient Decoherence Control Algorithms (NSF) Quantum Computing (TITF) ... Academical genealogy Courses and Seminar Algorithmic Aspects of Quantum Computing , Spring 2004 Topics in Network Security , Spring 2004 Quantum Computing Seminar Previous courses and seminars Computer Architecture , CPSC 321, Fall 2003 Randomized Algorithms , CPSC 689, Fall 2003 Algorithmic Aspects of Quantum Computing , CPSC 489/689, Spring 2003. The Primes Seminar , Fall 2002. Analysis of Algorithms , CPSC 629, Fall 2002. Analysis of Algorithms , CPSC 311, Spring 2002 Algorithmic Aspects of Quantum Computing , Fall 2001 Analysis of Algorithms CPSC 629 , Spring 2001 Service I organized the Mini-Symposium on Quantum Computing in 2001. List of wavelet researchers My Erdös number is 2: Paul Erdös collaborated with Itshak Borosh, who collaborated with me.

34. Discovering Wavelets: Tutorial DW Home Page. Discovering wavelets Tutorials If you are interested in an introduction to wavelets, we would humbly recommend our textbook. http://www.gvsu.edu/math/wavelets/tutorials.htm

DW Home Page Discovering Wavelets: Tutorials maintained by Edward Aboufadel and Steven Schlicker If you are interested in an introduction to wavelets, we would humbly recommend our textbook. However, there are also many free sources available on the Internet. We have reproduced here a few that we think are most accessible to undergraduates and nonspecialists. The Wavelet Tutorial: The Engineer's Ultimate Guide to Wavelet Analysis, by Robi Polikar An Introduction to Wavelets, by Amara Graps Wavelets, the Idiots Guide (that's what he calls it, but it has some Java applets!) Wavelet Image Compression: Beating the Bandwidth Bottleneck By Peter Schroder, in Wired Vol. 3, No. 5, May 1995. , a Postscript File of his Mathematics Magazine article, along with an Errata Page A Practical Guide to Wavelet Analysis by Christopher Torrence and Gilbert P. Compo. The FBI's wavelet-based Integrated Automated Fingerprint Identification System See the press release of August 10, 1999. We also have a page of links to wavelet sites . Also, you might find some interesting information at one of the other main pages on this site ( Wavelets for Undergraduates Student Projects , or Software

35. Ingrid Daubechies Professor of Applied Mathematics, Princeton University Department of Mathematics. Wavelet theory, time frequency analysis, data compression, compactly supported wavelets. http://www.princeton.edu/~icd/

36. Wavelets: Seeing The Forest A... - Summary This article describes the development of the mathematical modeling technique known as wavelets , which is used in computer imaging and animation as well as by http://www.beyonddiscovery.org/content/view.asp?I=1952

37. Wavelets: Seeing The For... - The Great Synthesis Home Articles wavelets Seeing the For The Great Synthesis. http://www.beyonddiscovery.org/content/view.asp?I=1955

38. REDIRECT TO NEW SCIENCE LIBRARIES WEB PAGES Mathematics resources on a broad range of topics from actuarial math to wavelets. http://www.library.yale.edu/scilib/mathl.html

REDIRECT TO NEW SCIENCE LIBRARIES WEB PAGES The page you are attempting to locate has been moved as part of a complete redesign of the Yale Science Libraries web site. The new URL is http://www.library.yale.edu/science/subject/math.html Please update any Bookmarks or Favorites. date: 17 December 2002 Science Libraries Home Page

39. Jos Roerdink University of Groningen Image processing, mathematical morphology, wavelets, computer vision and scientific visualization. http://www.cs.rug.nl/~roe/roe.html

prof. dr. Jos B.T.M. Roerdink University of Groningen Institute for Mathematics and Computing Science P.O. Box 800, 9700 AV Groningen, The Netherlands Tel: +31 (0)50 363 3931 Fax: +31 (0)50 363 3800 Secretary: +31 50 363 3939 Research My current research interests are in scientific visualization, computer graphics and computer vision, and their application in neuroimaging and bioinformatics. I am leading the research group Scientific Visualization and Computer Graphics Publications A list of my personal publications can be found here. Education Scientific Visualization Computer Graphics Research projects Master Scientific Visualization and Computer Graphics Advanced Computer Graphics and Virtual Environments Last modified: Tue May 4 10:55:28 CEST 2004

40. WAILI -- Wavelets With Integer Lifting WAILI wavelets with Integer Lifting. Introduction. Enquiries about the license conditions should be directed to wavelets at cs.kuleuven.ac.be. http://www.cs.kuleuven.ac.be/~wavelets/

WAILI Wavelets with Integer Lifting Introduction WAILI is a wavelet transform library. It includes some basic image processing operations based on the use of wavelets and forms the backbone of more complex image processing operations. Features WAILI Uses integer wavelet transforms based on the Lifting Scheme Provides various wavelet transforms of the Cohen-Daubechies-Feauveau family of biorthogonal wavelets Provides crop and merge operations on wavelet-transformed images Provides noise reduction based on wavelet thresholding using Generalized Cross Validation Provides scaling of images Provides edge enhancement of images Provides also some simple image operations (addition and subtraction of images) Allows different image representations (RGB, YUV, Lab, ...) WAILI.xl is a version of WAILI with Extensions for Very Large Images . Very large images are divided in blocks, which do not necessarily have to be present in the computer system's main memory. WAILI.xl provides most of the operations implemented in WAILI. Implementation The software library is written in C++ and extensively uses features of the ISO C++ 97 Standard to allow for a cleaner design. The development was done under

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