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   -> Volume 7, Issue 2


Preprint: Optimal multifilter banks
 
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Qingtang Jiang (qjiang@haar.math.nus.edu.sg)
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PostPosted: Thu Jan 22, 1998 3:59 pm    
Subject: Preprint: Optimal multifilter banks
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#3 Preprint: Optimal multifilter banks

Preprint: Optimal multifilter banks: design, related symmetric extension
transform and application to image compression

Authors: Tao Xia and Qingtang Jiang
Department of Mathematics
National University of Singapore
10 Kent Ridge Crescent
Singapore 119260
E-mail: xiatao@haar.math.nus.edu.sg,
qjiang@haar.math.nus.edu.sg

Abstract: The design of optimal multifilter banks and optimum
time-frequency resolution multiwavelets is discussed. The
nonexpansive symmetric extension transform related to multifilter
banks which generate symmetric/antisymmetric multiwavelets is
presented. More optimal multifilter banks are provided and they are
used in image compression. Experiments show that optimal multifilter
banks have better performances in image compression than Daubechies'
orthogonal scalar wavelet filters and Daubechies' least asymmetric
wavelet filters. Experiments also show that the symmetric extension
transform presented improves the rate-distortion performance, compared
with the periodic extension transform.
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