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   -> Volume 11, Issue 1


Preprint: Decomposition of 2D Signals by Rotation and Wavelet Techniques
 
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Paul de Zeeuw (Paul.de.Zeeuw@cwi.nl)
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PostPosted: Mon Jan 14, 2002 3:47 pm    
Subject: Preprint: Decomposition of 2D Signals by Rotation and Wavelet Techniques
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Title: Numerical Methods for Decomposition of 2D Signals by Rotation and Wavelet Techniques

Author: P.M. de Zeeuw and R.A. Zuidwijk

Abstract: Segregation of desirable and undesirable components in a signal given by measurements is a broad subject with many applications of huge importance. We focus on the problem that the signal to be detected is superposed by polluting signals which are characterized by a large amplitude and a few dominant directions. Such problems occur for instance in the analysis of seismic signals. We devise numerical algorithms which combine rotation of the given data with one-dimensional and two-dimensional discrete wavelet decomposition techniques respectively. The numerical algorithms are tested on both real and synthetic data-sets and are compared with more classical techniques based on Fourier transforms.

Keywords: Discrete wavelets, finite element method, Fourier transform, ground-roll, interpolation, rotation, seismic signals.

URL:
ftp://ftp.cwi.nl/pub/CWIreports/PNA/PNA-R0124.pdf
ftp://ftp.cwi.nl/pub/CWIreports/PNA/PNA-R0124.ps.Z

Paul M. de Zeeuw
CWI - PNA4
P.O. Box 94079, 1090 GB Amsterdam, The Netherlands

Paul.de.Zeeuw@cwi.nl http://www.cwi.nl/~pauldz/

R.A. Zuidwijk
EUR
P.O. Box 1738, 3000 DR Rotterdam, The Netherlands

R.Zuidwijk@fbk.eur.nl http://people.fbk.eur.nl/rzuidwijk/personal/
All times are GMT + 1 Hour
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