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Paper Abstract and Keywords
Presentation 2012-08-28 09:50
A Use of Magnitude-Only Images for Privacy- and Copyright-Protected Image Trading Systems
Shenchuan Liu, Masaaki Fujiyoshi, Hitoshi Kiya (Tokyo Metropolitan Univ.) LOIS2012-23 IE2012-55 EMM2012-46
Abstract (in Japanese) (See Japanese page) 
(in English) This paper introduces magnitude-only images to image trading systems
in which not only the copyright of images but also the privacy of
purchasers are protected. In such systems, an image is segmented into
two pieces for copyright protection; one is sent to a trusted third
party (TTP) and the other is directly sent to a purchaser. The TTP
watermarks the received piece and it sends the watermarked piece to
the purchaser, and here, the room for a privacy violation exists. Whereas
conventional schemes divide an image in the spatial domain, the
proposed scheme divides an image in the discrete Fourier transformed
domain; two pieces are amplitude and phase spectra. An amplitude-only
image which is the inversely transformed amplitude spectra almost
completely protects its content, so the privacy of purchasers are
protected against the TTP. In addition, any image watermarking technique which
watermarks the magnitude of images can be used in the proposed scheme.
Experimental results show the effectiveness of the proposed scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) magnitude-only images / digital fingerprint / copyright protection / privacy protection / data hiding / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 190, EMM2012-46, pp. 63-68, Aug. 2012.
Paper # EMM2012-46 
Date of Issue 2012-08-20 (LOIS, IE, EMM) 
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 LOIS2012-23 IE2012-55 EMM2012-46

Conference Information
Conference Date 2012-08-27 - 2012-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMM 
Conference Code 2012-08-EMM-IE-LOIS-ME-CMN 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Use of Magnitude-Only Images for Privacy- and Copyright-Protected Image Trading Systems 
Sub Title (in English)  
Keyword(1) magnitude-only images  
Keyword(2) digital fingerprint  
Keyword(3) copyright protection  
Keyword(4) privacy protection  
Keyword(5) data hiding  
1st Author's Name Shenchuan Liu  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Masaaki Fujiyoshi  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
3rd Author's Name Hitoshi Kiya  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker Author-1 
Date Time 2012-08-28 09:50:00 
Presentation Time 25 minutes 
Registration for EMM 
Paper # LOIS2012-23, IE2012-55, EMM2012-46 
Volume (vol) vol.112 
Number (no) no.188(LOIS), no.189(IE), no.190(EMM) 
Page pp.63-68 
Date of Issue 2012-08-20 (LOIS, IE, EMM) 

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