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Paper Abstract and Keywords
Presentation 2023-07-24 16:00
Estimation of rotation angle using pilot signal for image watermarking
Rinka Kawano, Masaki Kawamura (Yamaguchi Univ.) ISEC2023-26 SITE2023-20 BioX2023-29 HWS2023-26 ICSS2023-23 EMM2023-26
Abstract (in Japanese) (See Japanese page) 
(in English) Robust watermarking methods must be resistant to attacks. In conventional methods, errors have been corrected after extracting the watermark, regardless of the type of attack. For example, error-correcting codes or spread spectrum were used to correct watermark errors. In order to reduce watermark errors, embedding methods in the frequency domain such as DCT and DFT have been proposed. These methods are effective against non-geometric attacks such as distortion due to compression. However, it is necessary to synchronize the embedding position of the watermark against geometric attacks, e.g., by using SIFT feature points. If the type and intensity of the attack could be estimated, synchronization would be possible and errors could be reduced. There are several types of attacks, such as scaling, rotating, and cropping. In this work, we focus on image rotation and propose a method for estimating the angle of rotation using a grid-shaped pilot signal. The proposed method suppresses the slant derived from the original image while emphasizing the slant of the pilot signal. As a result, the rotation angle of the stego-image could be estimated accurately.
Keyword (in Japanese) (See Japanese page) 
(in English) watermarking method / geometric attack / discrete Fourier transform / pilot signal / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 134, EMM2023-26, pp. 80-85, July 2023.
Paper # EMM2023-26 
Date of Issue 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
ISSN 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 ISEC2023-26 SITE2023-20 BioX2023-29 HWS2023-26 ICSS2023-23 EMM2023-26

Conference Information
Committee EMM BioX ISEC SITE ICSS HWS IPSJ-CSEC IPSJ-SPT 
Conference Date 2023-07-24 - 2023-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Jichiro Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMM 
Conference Code 2023-07-EMM-BioX-ISEC-SITE-ICSS-HWS-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of rotation angle using pilot signal for image watermarking 
Sub Title (in English)  
Keyword(1) watermarking method  
Keyword(2) geometric attack  
Keyword(3) discrete Fourier transform  
Keyword(4) pilot signal  
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1st Author's Name Rinka Kawano  
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 2023-07-24 16:00:00 
Presentation Time 20 minutes 
Registration for EMM 
Paper # ISEC2023-26, SITE2023-20, BioX2023-29, HWS2023-26, ICSS2023-23, EMM2023-26 
Volume (vol) vol.123 
Number (no) no.129(ISEC), no.130(SITE), no.131(BioX), no.132(HWS), no.133(ICSS), no.134(EMM) 
Page pp.80-85 
#Pages 6 
Date of Issue 2023-07-17 (ISEC, SITE, BioX, HWS, ICSS, EMM) 

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