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Paper Abstract and Keywords
Presentation 2007-09-27 14:15
Cryptanalysis JPEG 2000 partial scrambled images based on statistical character
Shingo Hamaguchi, Akihiro Shimizu (Kochi Univ.of Tech.) CQ2007-46 OIS2007-36 IE2007-43
Abstract (in Japanese) (See Japanese page) 
(in English) Users can recognize image outline and protect copyrights on digital images by partial-scrambling.
JPEG 2000 is suggested as an image encoding method. JPEG 2000 reduces occurrences of block noise and advances compression rate than JPEG.
As a precedent research, it was proposed that we encode images and encrypt coded data.
However the existing partial-scrambling is in danger of being restored scrambled images by a feature of image frequency transform.
In this research, we point problems of existing partial-scrambling and approach a cryptanalysis.
Additionally we determine images noise.
Keyword (in Japanese) (See Japanese page) 
(in English) JPEG 2000 / Partial-Scrambling / Encryption / Image compression / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, Sept. 2007.
Paper #  
Date of Issue 2007-09-20 (CQ, OIS, IE) 
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 CQ2007-46 OIS2007-36 IE2007-43

Conference Information
Committee CQ LOIS IE IEE-CMN ITE-ME  
Conference Date 2007-09-27 - 2007-09-28 
Place (in Japanese) (See Japanese page) 
Place (in English) The university of Tokushima 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Multimedia communication, multimedia system, IP broadcast/video transmission, etc 
Paper Information
Registration To LOIS 
Conference Code 2007-09-CQ-OIS-IE-IEE-CMN-ITE-ME 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Cryptanalysis JPEG 2000 partial scrambled images based on statistical character 
Sub Title (in English)  
Keyword(1) JPEG 2000  
Keyword(2) Partial-Scrambling  
Keyword(3) Encryption  
Keyword(4) Image compression  
Keyword(5)  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Shingo Hamaguchi  
1st Author's Affiliation Kochi University of Technology (Kochi Univ.of Tech.)
2nd Author's Name Akihiro Shimizu  
2nd Author's Affiliation Kochi University of Technology (Kochi Univ.of Tech.)
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Speaker Author-1 
Date Time 2007-09-27 14:15:00 
Presentation Time 25 minutes 
Registration for LOIS 
Paper # CQ2007-46, OIS2007-36, IE2007-43 
Volume (vol) vol.107 
Number (no) no.229(CQ), no.230(OIS), no.231(IE) 
Page pp.57-60 
#Pages 4 
Date of Issue 2007-09-20 (CQ, OIS, IE) 

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