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Paper Abstract and Keywords
Presentation 2013-03-15 15:40
A watermarking method for the Bezier curve
Takafumi Kudo, Sumiko Miyata (Kanagawa Univ.), Tetsuya Morizumi (Faculty of Engineering, Toyo Networks and System Integration), Hirotsugu Kinoshita (Kanagawa Univ.) SITE2012-70 IA2012-108
Abstract (in Japanese) (See Japanese page) 
(in English) E-book that can read on your computer or mobile device began to come into wide use in the market. The comics have been digitized as well as the novels. There are also various types of image posting sites on the Internet. It has also been posted by amateur painters. Furthermore, comics are sometimes created on PC and some professional painter have created in that way. Digital data can
be copy,save,and processed easily. And you can trace easily by using the painting program.So some digital contents may be exploited against the willing of the copyright holder. Watermarking techniques are studied to solve such problems. Most of watermarking methods are not suitable for the cartoons and the illustrations with bilevel lines.
As the illustrations such as cartoons are consist of bi-level lines, it is difficult to embedding the required information while keeping the quality of the original illustrations.
The information embedded into the hand writing trace is hard to decode with conventional methods which embed the information into the value of the pixels directly.
To solve these problems, we propose a watermarking implementation for the bi-level traced images which embeds the watermark into the bezier curves which compose the illustration.

We will not be able to recover the information in the existing methods of embedding the information in the pixel value.
Keyword (in Japanese) (See Japanese page) 
(in English) watermark / bezier curve / copyright / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 488, SITE2012-70, pp. 243-248, March 2013.
Paper # SITE2012-70 
Date of Issue 2013-03-07 (SITE, IA) 
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 SITE2012-70 IA2012-108

Conference Information
Committee IA SITE IPSJ-IOT  
Conference Date 2013-03-14 - 2013-03-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Todaiji Total Cultural Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Internet and Information Ethics Education, etc. 
Paper Information
Registration To SITE 
Conference Code 2013-03-IA-SITE-IOT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A watermarking method for the Bezier curve 
Sub Title (in English)  
Keyword(1) watermark  
Keyword(2) bezier curve  
Keyword(3) copyright  
1st Author's Name Takafumi Kudo  
1st Author's Affiliation Kanagawa University (Kanagawa Univ.)
2nd Author's Name Sumiko Miyata  
2nd Author's Affiliation Kanagawa University (Kanagawa Univ.)
3rd Author's Name Tetsuya Morizumi  
3rd Author's Affiliation Faculty of Engineering, Toyo Networks and System Integration Co.Ltd (Faculty of Engineering, Toyo Networks and System Integration)
4th Author's Name Hirotsugu Kinoshita  
4th Author's Affiliation Kanagawa University (Kanagawa Univ.)
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Speaker Author-1 
Date Time 2013-03-15 15:40:00 
Presentation Time 25 minutes 
Registration for SITE 
Paper # SITE2012-70, IA2012-108 
Volume (vol) vol.112 
Number (no) no.488(SITE), no.489(IA) 
Page pp.243-248 
Date of Issue 2013-03-07 (SITE, IA) 

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