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   -> Volume 6, Issue 5

Software: WAILI: Wavelets with Integer Lifting
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Geert Uytterhoeven (

PostPosted: Fri May 16, 1997 10:03 am    
Subject: Software: WAILI: Wavelets with Integer Lifting
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#13 Software: WAILI: Wavelets with Integer Lifting

This announces the availability of a Wavelet Transform Library written in C++.
Please visit

WAILI -- Wavelets with Integer Lifting


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.


* 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, ...)


The software library is written in C++ and extensively uses features
of the ANSI C++ 95 Draft Standard to allow for a cleaner design. The
development was done using GNU C++ 2.7.2.x.


WAILI is available in source form for research purposes only and may
not be further distributed. Enquiries about the license conditions
should be directed to Alternatively you
can use the online form at


* Geert Uytterhoeven (
* Filip Van Wulpen (
* Maarten Jansen (


This library is developed within a project on Wavelet Based
Interactive Video Communication and Image Database Consulting, funded
by the Flemish Information Technology Action Program (Vlaams
Actieprogramma Informatietechnologie), project number ITA/950244.


G. Uytterhoeven, D. Roose, and A. Bultheel. Wavelet transforms
using the Lifting Scheme. ITA-Wavelets Report WP 1.1,
Department of Computer Science, Katholieke Universiteit Leuven,
Belgium, November 1996.

And remember, it's written WAILI, but pronounced WILY, except in
Dutch, where it's pronounced PIEFPAK.
All times are GMT + 1 Hour
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