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Paper Abstract and Keywords
Presentation 2015-01-29 13:15
Embedding Method by using Wet Paper Code with FIST Method
Takahiro Yamamoto, Masaki Kawamura (Yamaguchi Univ.) EMM2014-74
Abstract (in Japanese) (See Japanese page) 
(in English) We propose an embedding method by using wet paper code (WPC) with FIST
method.
The watermark is embedded into DWT coefficients by the WPC.
The WPC has the advantage such that no one needs to know
embedded positions during decoding.
This advantage prevents attackers from detecting these positions.
However, in encoding, the WPC needs to solve system of equations
in which number of unknown variables is more than number of equations.
In order to use existing methods using Gaussian elimination,
the number of variables must be reduced to less than the
number of equations by the selection rule.
Once the selection rule is disclosed, this advantage of the WPC
could be lost.
We, therefore, introduce sparse estimation for the WPC.
The sparse estimation can solve the system of equations without the
selection rule.
The FIST method is one of sparse estimation methods.
The FIST method can find sparse solution quickly.
Digital watermarking methods are required robustness for JPEG
compression and cropping.
In our method, the watermarks are embedded into LH subband
coefficients of 3 level DWT domain against JPEG compression.
Against cropping, original image is divided into blocks and then
both the watermarks and the synchronization code are embedded
into the one block.
As a result, after JPEG compression and cropping, proposed method can
achieved low bit error rate in estimation of the watermarks.
Keyword (in Japanese) (See Japanese page) 
(in English) digital watermarking / wet paper code / sparse estimation / FIST method / compressive sensing / discrete wavelet transform / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 424, EMM2014-74, pp. 45-50, Jan. 2015.
Paper # EMM2014-74 
Date of Issue 2015-01-21 (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)
Download PDF EMM2014-74

Conference Information
Committee EMM  
Conference Date 2015-01-28 - 2015-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Tohoku University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMM 
Conference Code 2015-01-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Embedding Method by using Wet Paper Code with FIST Method 
Sub Title (in English)  
Keyword(1) digital watermarking  
Keyword(2) wet paper code  
Keyword(3) sparse estimation  
Keyword(4) FIST method  
Keyword(5) compressive sensing  
Keyword(6) discrete wavelet transform  
Keyword(7)  
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 2015-01-29 13:15:00 
Presentation Time 30 minutes 
Registration for EMM 
Paper # EMM2014-74 
Volume (vol) vol.114 
Number (no) no.424 
Page pp.45-50 
#Pages 6 
Date of Issue 2015-01-21 (EMM) 

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