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Paper Abstract and Keywords
Presentation 2018-03-05 14:35
[Poster Presentation] A Block-Permutation-Based Image Encryption Allowing Hierarchical Decryption
Yusuke Izawa, Shoko Imaizumi (Chiba Univ.), Hitoshi Kiya (Tokyo Metro. Univ.) EMM2017-77
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a permutation-based image encryption scheme, which allows decrypting only a particular area in the encrypted image. We divide an image into multiple regions and configure the fixed-size blocks in each block. The initial encryption procedure is carried out within each region, and then the positional scrambling of the blocks is perfomed in the entire image. Consequently, the arbitrary region can be retrieved from the encrypted image without decrypting other regions. In addition, we can adequately control the encryption strength by using different block sizes.
Keyword (in Japanese) (See Japanese page) 
(in English) image encryption / hierarchy / partial decryption / block segmentation / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 476, EMM2017-77, pp. 1-6, March 2018.
Paper # EMM2017-77 
Date of Issue 2018-02-26 (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)
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Conference Information
Committee EMM  
Conference Date 2018-03-05 - 2018-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Naze Community Center (Amami-Shi, Kagoshima) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Image and Sound Quality, Metrics for Perception and Recognition, Human Auditory and Visual System, etc. 
Paper Information
Registration To EMM 
Conference Code 2018-03-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Block-Permutation-Based Image Encryption Allowing Hierarchical Decryption 
Sub Title (in English)  
Keyword(1) image encryption  
Keyword(2) hierarchy  
Keyword(3) partial decryption  
Keyword(4) block segmentation  
1st Author's Name Yusuke Izawa  
1st Author's Affiliation Chiba University (Chiba Univ.)
2nd Author's Name Shoko Imaizumi  
2nd Author's Affiliation Chiba University (Chiba 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 2018-03-05 14:35:00 
Presentation Time 60 minutes 
Registration for EMM 
Paper # EMM2017-77 
Volume (vol) vol.117 
Number (no) no.476 
Page pp.1-6 
Date of Issue 2018-02-26 (EMM) 

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