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See below and run example11.m
===================================================================
L I S Q
LISQ is a MATLAB toolbox for the lifting scheme on quincunx grids
Copyright (C) 1998-2003 Stichting CWI, Amsterdam, The Netherlands
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.
===================================================================
SUMMARY
The collection of functions includes second generation wavelet
decomposition and reconstruction tools for images, visualization
tools, as well as functions for the computation of moments.
The wavelet schemes rely on the lifting scheme of Sweldens and use
the splitting of rectangular grids into quincunx grids, also known
as red-black ordering. The prediction filters include linear
filters (Neville orders of increasing order) as well as a few
nonlinear filters which preserve local maxima or minima.
===================================================================
This is Version 1.2, November 28, 2003.
Updates and extensions of the code are reported
in the log-book below.
===================================================================
DOWNLOAD
One can download LISQ.zip and/or LISQ.tar.Z from the URL:
http://ftp.cwi.nl/pauldz/Codes/LISQ/
These files include the m-files of LISQ, the file README and a few
example images.
LISQ.zip is particularly suited for unwrapping on Windows
platforms, but can also be unwrapped on many Linux/Unix
platforms as follows
mkdir LISQ
unzip LISQ.zip -d ./LISQ
LISQ.tar.Z is particularly suited for unwrapping on Linux/Unix
platforms, e.g.
zcat LISQ.tar.Z | tar xvf -
===================================================================
EXAMPLES
example00.m ... example10.m, exampleIF.m correspond to the report
below. File exampleIF.m offers both an elaborate and illuminating
example (with respect to image fusion) of how to use LISQ.
File exampleTH.m (not in the report) is an example where details
(below a treshold) are discarded.
File example11.m (not in the report) shows how to depict the
integral all-scales display of the decomposition by the Quincunx
Lifting Scheme.
===================================================================
REPORT
P.M. de Zeeuw,
A Toolbox for the Lifting Scheme on Quincunx Grids (LISQ),
CWI Report PNA-R0224,
Centrum voor Wiskunde en Informatica,
Amsterdam, 2002.
This report is readily available as:
http://ftp.cwi.nl/CWIreports/PNA/PNA-R0224.pdf
or
http://ftp.cwi.nl/CWIreports/PNA/PNA-R0224.ps.Z
===================================================================
IMPORTANT NOTE
Any result obtained by LISQ (the code) or part of it, and published
in any publication whatsoever, electronically or otherwise, has to
make reference to the above report.
===================================================================
ERRATA
CWI Report PNA-R0224
Page Line Correction
16 2 "square grid" ==> "rectangular grid"
===================================================================
CONTACT
Feel free to consult me, but I cannot guarantee swift answers.
Dr. P.M. de Zeeuw E-mail: [EMAIL PROTECTED]
CWI - PNA4 http://homepages.cwi.nl/~pauldz/
P.O. Box 94079
NL - 1090 GB Amsterdam
Good luck!
Paul de Zeeuw
===================================================================
VITAE
Dr. Paul M. de Zeeuw studied mathematics and computer science
at the University of Leiden. Since 1979 he works at the National
Research Institute for Mathematics and Computer Science (CWI) in
Amsterdam where he authored and co-authored many papers on multigrid
methods for the solution of partial differential equations.
In 1990 he was author for the Dutch Open University on the subject of
numerical linear algebra. From 1997 till 2002 he was the secretary
the Dutch-Flemish Numerical Analysis Society. His current occupation
involves scientific programming and applications of multiresolution
methods. His research interests include numerical methods for image
processing.
URL: http://homepages.cwi.nl/~pauldz/
===================================================================
LOG-BOOK
January 29, 2003.
Installation of the first publicly available version of LISQ.
February 18, 2003.
The filternames 'minmin' and 'maxmax' have been added to the already
present filtername 'maxmin' (all three repesent nonlinear filters).
exampleTH.m (an example on thresholding details) has been added.
Also revamping of the older examples has taken place.
February 26, 2003.
File printshop.m has been updated.
April 7, 2003.
The comments in rota0011fill.m and rota1001fill.m have been updated
(the code was correct but the comments were obsolete).
November 24, 2003.
The functions intensim(), imequi() and QLsuperimage() have been added.
They facilitate the integral all-scales display of the decomposition
by the Quincunx Lifting Scheme, see example11.m which has also been
added.
File printshop.m has been updated.
Links to CWI webpages have been updated in the file README.
November 28, 2003.
File printshop.m has been updated in the sense that one can do
without the Image Processing Toolbox.
===================================================================
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