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Paper Abstract and Keywords
Presentation 2008-07-14 14:55
Geometrical Compensation Methods for the Image Watermarking Scheme and Its Required Accuracy
Shouhei Kamimura, Masaaki Fujiyoshi, Hitoshi Kiya (Tokyo Metro. Univ.) IE2008-34 MVE2008-28
Abstract (in Japanese) (See Japanese page) 
(in English) This paper studies geometrical compensation methods for improving the watermark extraction ability. In a printing-and-scanning process of an image, conditions such as printing resolution, scanning resolution, and paper position to the scanner are all different each time. In general, such a process geometrically transforms a stego image in which watermark is hidden, so the watermark extraction gets difficult. Whereas the conventional approach makes the watermarking method resistant to geometrical transform, this paper proposes a method that improves watermark extraction performance by geometrical compensation utilizing phase-only correlation technique. The sequence of geometrical compensation, scanning conditions, and the required accuracy of geometrical compensation are considered in this paper.
Keyword (in Japanese) (See Japanese page) 
(in English) digital watermarking / printing / geometrical compensation / phase-only correlation / scaling / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 127, IE2008-34, pp. 7-12, July 2008.
Paper # IE2008-34 
Date of Issue 2008-07-07 (IE, MVE) 
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)
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Conference Information
Committee IE MVE  
Conference Date 2008-07-14 - 2008-07-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Shinshu University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IE 
Conference Code 2008-07-IE-MVE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Geometrical Compensation Methods for the Image Watermarking Scheme and Its Required Accuracy 
Sub Title (in English)  
Keyword(1) digital watermarking  
Keyword(2) printing  
Keyword(3) geometrical compensation  
Keyword(4) phase-only correlation  
Keyword(5) scaling  
1st Author's Name Shouhei Kamimura  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Masaaki Fujiyoshi  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
3rd Author's Name Hitoshi Kiya  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker Author-1 
Date Time 2008-07-14 14:55:00 
Presentation Time 25 minutes 
Registration for IE 
Paper # IE2008-34, MVE2008-28 
Volume (vol) vol.108 
Number (no) no.127(IE), no.128(MVE) 
Page pp.7-12 
Date of Issue 2008-07-07 (IE, MVE) 

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