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Paper Abstract and Keywords
Presentation 2015-08-03 13:00
An Image Encryption Method Allowing Lossless Compression
Kenta Kurihara, Sayaka Shiota, Hitoshi Kiya (Tokyo Metro. Univ.) IE2015-49
Abstract (in Japanese) (See Japanese page) 
(in English) Conventional secure image transmission is based on a Compression-then-Encryption system where image encryption has to be conducted prior to image compression. On the other hand, an Encryption-then-Compression (ETC) System where image encryption can be conducted prior to compression, is expected for privacy protection. In this article, we propose an image encryption method with the assumption of international standard lossless compression methods for ETC systems. The proposed method consists of four encryption steps, including a multilevel block-based encryption step which enables to reduce the compression performance degradation, by choosing appropriate block sizes to keep the correlation among adjacent blocks. Besides, the proposed method can control both a visibility condition and a level of security, by using four encryption steps independently. It is also applied to some experiments to verify the compression performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Lossless compression / ETC system / Image encryption / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 171, IE2015-49, pp. 19-24, Aug. 2015.
Paper # IE2015-49 
Date of Issue 2015-07-27 (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 IE2015-49

Conference Information
Committee IE ITE-ME IPSJ-AVM ITE-CE  
Conference Date 2015-08-03 - 2015-08-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Metropolitan Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IE 
Conference Code 2015-08-IE-ME-AVM-CE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Image Encryption Method Allowing Lossless Compression 
Sub Title (in English)  
Keyword(1) Lossless compression  
Keyword(2) ETC system  
Keyword(3) Image encryption  
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1st Author's Name Kenta Kurihara  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Sayaka Shiota  
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 2015-08-03 13:00:00 
Presentation Time 25 minutes 
Registration for IE 
Paper # IE2015-49 
Volume (vol) vol.115 
Number (no) no.171 
Page pp.19-24 
#Pages 6 
Date of Issue 2015-07-27 (IE) 

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