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Paper Abstract and Keywords
Presentation 2013-05-24 14:00
Consideration of introduction of IST method to wet paper code and its problem
Takahiro Yamamoto, Masaki Kawamura (Yamaguchi Univ.) EMM2013-4
Abstract (in Japanese) (See Japanese page) 
(in English) We introduce the IST method to wet paper code (WPC). Smaller degradation for a stego image is preferred for digital watermarking. In order to minimize the degradation of the image, small difference between the cover image and the stego one is required. We apply the IST method, which is used in the compressive sensing, to WPC in order to get sparse solutions.
While the caluculation in WPC is on the Galois Field GF(2), one in IST method is on real number field R. Compared the IST method using binary vector generated from WPC to the IST method using real vector generated from relaxed WPC. The latter can achieve lower bit error rate (BER) of messages. However, no stego image can be constructed due to real parity vector for the stego image. We, therefore, propose the method that the calculation in WPC is on real number field R and watermarks are embeded into pixel values not parity bits in the image. As a result, our method can estimate messages with low BER and construct a stego image.
Keyword (in Japanese) (See Japanese page) 
(in English) digital watermarking / wet paper code / sparse estimation / IST method / compressive sensing / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 66, EMM2013-4, pp. 19-24, May 2013.
Paper # EMM2013-4 
Date of Issue 2013-05-17 (EMM) 
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)
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Conference Information
Committee EMM  
Conference Date 2013-05-24 - 2013-05-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Kochijyo Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Poster Session, etc. 
Paper Information
Registration To EMM 
Conference Code 2013-05-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Consideration of introduction of IST method to wet paper code and its problem 
Sub Title (in English)  
Keyword(1) digital watermarking  
Keyword(2) wet paper code  
Keyword(3) sparse estimation  
Keyword(4) IST method  
Keyword(5) compressive sensing  
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Keyword(8)  
1st Author's Name Takahiro Yamamoto  
1st Author's Affiliation Yamaguchi University (Yamaguchi Univ.)
2nd Author's Name Masaki Kawamura  
2nd Author's Affiliation Yamaguchi University (Yamaguchi Univ.)
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Speaker Author-1 
Date Time 2013-05-24 14:00:00 
Presentation Time 180 minutes 
Registration for EMM 
Paper # EMM2013-4 
Volume (vol) vol.113 
Number (no) no.66 
Page pp.19-24 
#Pages 6 
Date of Issue 2013-05-17 (EMM) 

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