Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/16139
Title: Orthogonal symmetric prefilter banks for discrete multiwavelet transforms
Authors: Hsung, TC
Lun, DPK 
Ho, KC
Keywords: Approximation order
Linear-phase paraunitary filterbank
Multiwavelets
Orthogonality
Prefilter
Wavelets
Issue Date: 2006
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE signal processing letters, 2006, v. 13, no. 3, p. 145-148 How to cite?
Journal: IEEE signal processing letters 
Abstract: Traditional design of critically sampled prefilters for discrete multiwavelet transform ignores the preservation of the linear phase property, which is important for many applications, such as image coding and digital communications. Balanced multiwavelets solve this problem but make the filters longer. By using linear phase filter banks, we propose a simple algorithm for the design of orthogonal symmetric prefilter banks that can be used with the discrete multiwavelet transform. The prefilter bank resulted is orthogonal and critically sampled and can preserve the approximation power of the multiwavelet as well as the linear phase property. Experimental results show that the systems using the proposed symmetric prefilter banks give better performance as compared with using nonlinear phase prefilters.
URI: http://hdl.handle.net/10397/16139
ISSN: 1070-9908
EISSN: 1558-2361
DOI: 10.1109/LSP.2005.862609
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