Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/18065
Title: Symmetric prefilters for multiwavelets
Authors: Hsung, TC
Lun, DPK 
Siu, WC 
Issue Date: 2004
Source: 2004 International Symposium on Intelligent Multimedia, Video and Speech Processing, ISIMP 2004, 2004, p. 494-497 How to cite?
Abstract: When applying discrete multiwavelet, prefiltering is necessary because the initial multiscaling coefficients cannot be trivially derived from the samples of scalar signals. The prefilters can be designed by using the superfunction theory. The idea is to construct a lowpass function from the multiscaling functions that inherits their approximation power for scalar signals. However, none of the existing prefilters give linear phase combined filters, which is important for many practical applications. In this paper, we analyze the conditions on which the prefilters and the combined filters are symmetric. We further propose a method to design good multiwavelet prefilters that allow the superfunction to be symmetric, satisfying the Strang-Fix conditions and the resulted combined filters are linear phase. We give design example on Chui-Lian multiwavelet.
Description: 2004 International Symposium on Intelligent Multimedia, Video and Speech Processing, ISIMP 2004, Hong Kong, China, 20-22 October 2004
URI: http://hdl.handle.net/10397/18065
ISBN: 0780386884
9780780386884
Appears in Collections:Conference Paper

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