THE DISCRETE MULTIPLE WAVELET TRANSFORM AND THRESHOLDING METHODS

Authors
DOWNIE TR SILVERMAN BW
Citation
Tr. Downie et Bw. Silverman, THE DISCRETE MULTIPLE WAVELET TRANSFORM AND THRESHOLDING METHODS, IEEE transactions on signal processing, 46(9), 1998, pp. 2558-2561
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on signal processing → ACNP
ISSN journal
1053587X
Volume
46
Issue
9
Year of publication
1998
Pages
2558 - 2561
Database
ISI
SICI code
1053-587X(1998)46:9<2558:TDMWTA>2.0.ZU;2-D
Abstract
We propose thresholding for multiwavelets considering the coefficient vectors as a whole rather than thresholding individual elements. A mul tivariate universal threshold is obtained using the chi(2) distributio n. Simulations indicate that using the GHM multiwavelet with appropria te preprocessing, our method outperforms univariate thresholding of bo th GHM and Daubechies wavelet decompositions.