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Paper Abstract and Keywords
Presentation 2009-09-30 11:15
Analysis of QIM-Based Audio Watermarking Using LDPC Codes
Kenichiro Ashiba, Raul Martinez-Noriega (Univ. of Electro-Commu.), Mariko Nakano (National Polytechnic Institute), Brian Kurkoski, Kazuhiko Yamaguchi, Kingo Kobayashi (Univ. of Electro-Commu.) IT2009-40
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we analyze audio watermarking methods based on quantization index modulation and
low-density parity-check (LDPC) codes. We found that dither modu-lation (DM) can achieve better performance
using half-rate Margulis LDPC code even better than some low-rate codes. Then, we propose a scheme based on
LDPC codes and DM with distortion-compensation (DC) property which has a robustness benefit of 6 dB versus
uncoded case, 2 dB versus algebraic codes, 1 dB versus DM with LDPC code. In DM with DC property, we show
that it is possible to achieve .5 dB better robustness using a scale parameter α lower than the theoretically optimal
and LDPC codes. Finally our proposal was evaluated against more practical attacks. These results show that our
scheme could be a good option for robust watermarks.
Keyword (in Japanese) (See Japanese page) 
(in English) watermark / LDPCcode / sofr-infoｒmation / QIM / DC-DM / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 212, IT2009-40, pp. 43-47, Sept. 2009.
Paper # IT2009-40 
Date of Issue 2009-09-22 (IT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 IT2009-40

Conference Information
Committee IT  
Conference Date 2009-09-29 - 2009-09-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Sophia Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) LDPC codes, general 
Paper Information
Registration To IT 
Conference Code 2009-09-IT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Analysis of QIM-Based Audio Watermarking Using LDPC Codes 
Sub Title (in English)  
Keyword(1) watermark  
Keyword(2) LDPCcode  
Keyword(3) sofr-infoｒmation  
Keyword(4) QIM  
Keyword(5) DC-DM  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kenichiro Ashiba  
1st Author's Affiliation The University of Electro Communication (Univ. of Electro-Commu.)
2nd Author's Name Raul Martinez-Noriega  
2nd Author's Affiliation The University of Electro Communication (Univ. of Electro-Commu.)
3rd Author's Name Mariko Nakano  
3rd Author's Affiliation National Polytechnic Institute (National Polytechnic Institute)
4th Author's Name Brian Kurkoski  
4th Author's Affiliation The University of Electro Communication (Univ. of Electro-Commu.)
5th Author's Name Kazuhiko Yamaguchi  
5th Author's Affiliation The University of Electro Communication (Univ. of Electro-Commu.)
6th Author's Name Kingo Kobayashi  
6th Author's Affiliation The University of Electro Communication (Univ. of Electro-Commu.)
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Speaker Author-1 
Date Time 2009-09-30 11:15:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2009-40 
Volume (vol) vol.109 
Number (no) no.212 
Page pp.43-47 
#Pages 5 
Date of Issue 2009-09-22 (IT) 

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