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Paper Abstract and Keywords
Presentation 2008-03-07 13:00
[Poster Presentation] A design of dual-tree discrete wavelet transform based on least squares method
Takafumi Shimizu, Seisuke Kyochi, Masaaki Ikehara (Keio Univ.) CAS2007-151 SIP2007-226 CS2007-116
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose a novel design of dual-tree discrete wavelet transform based on least squares method. An effective design method based on allpass filter with FIR has proposed. However, this method holds two problems. First, optimal frequency characteristic cannot be realized due to the restriction of design parameters. Second, approximation of the half sample delay condition is restricted on low frequency. The proposed method can achieve the high design degrees of freedom by using least squares method. We show the method can design more effective dual-tree discrete wavelet transform than conventional one, in terms of sharpness of frequency characteristic and accuracy of half sample delay condition, directionality and shift-invariance, by simulations.
Keyword (in Japanese) (See Japanese page) 
(in English) Dual-Tree DWT / half sample delay condtion / directionality / shift invariance / least squares method / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 529, SIP2007-226, pp. 113-117, March 2008.
Paper # SIP2007-226 
Date of Issue 2008-02-29 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CAS2007-151 SIP2007-226 CS2007-116

Conference Information
Committee CS SIP CAS  
Conference Date 2008-03-06 - 2008-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network processors, signal processing for communications, wireless LAN/PAN, etc. 
Paper Information
Registration To SIP 
Conference Code 2008-03-CS-SIP-CAS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A design of dual-tree discrete wavelet transform based on least squares method 
Sub Title (in English)  
Keyword(1) Dual-Tree DWT  
Keyword(2) half sample delay condtion  
Keyword(3) directionality  
Keyword(4) shift invariance  
Keyword(5) least squares method  
1st Author's Name Takafumi Shimizu  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Seisuke Kyochi  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Masaaki Ikehara  
3rd Author's Affiliation Keio University (Keio Univ.)
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Date Time 2008-03-07 13:00:00 
Presentation Time 60 
Registration for SIP 
Paper # IEICE-CAS2007-151,IEICE-SIP2007-226,IEICE-CS2007-116 
Volume (vol) IEICE-107 
Number (no) no.527(CAS), no.529(SIP), no.531(CS) 
Page pp.113-117 
#Pages IEICE-5 
Date of Issue IEICE-CAS-2008-02-29,IEICE-SIP-2008-02-29,IEICE-CS-2008-02-29 

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