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Paper Abstract and Keywords
Presentation 2019-02-20 14:45
Encrypted Image Classification by Using Secure OMP Computation
Takayuki Nakachi (NTT), Hitoshi Kiya (Tokyo Metro. Univ.) ITS2018-84 IE2018-105
Abstract (in Japanese) (See Japanese page) 
(in English) Currently, huge amounts of image/video are being recorded and uploaded every day by surveillance systems or SNS services etc. Recent popularized edge/cloud computing is widely used for handling and analysis such huge amount of image/video data. However, the cloud computing has some serious issues for end users, such as unauthorized use and leak of data, and privacy compromise, due to unreliability of providers and some accident. In this manuscript, we propose an encrypted image classification method by using secure sparse coding based on a random unitary transform. We carry out experiments of detecting human in images on the INRIA person dataset. It is shown that the encrypted mage classification method enables us to not only protects images, but also have the same classification performance as that of sparse coding with unprotected images.
Keyword (in Japanese) (See Japanese page) 
(in English) Image Classification / Sparse Coding / Dictionary Learning / K-SVD / Random Unitary Transform / Secure Computation / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 450, IE2018-105, pp. 227-232, Feb. 2019.
Paper # IE2018-105 
Date of Issue 2019-02-12 (ITS, IE) 
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 ITS2018-84 IE2018-105

Conference Information
Conference Date 2019-02-19 - 2019-02-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Image Processing, etc. 
Paper Information
Registration To IE 
Conference Code 2019-02-ITS-IE-MMS-HI-ME-AIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Encrypted Image Classification by Using Secure OMP Computation 
Sub Title (in English)  
Keyword(1) Image Classification  
Keyword(2) Sparse Coding  
Keyword(3) Dictionary Learning  
Keyword(4) K-SVD  
Keyword(5) Random Unitary Transform  
Keyword(6) Secure Computation  
1st Author's Name Takayuki Nakachi  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Hitoshi Kiya  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker Author-1 
Date Time 2019-02-20 14:45:00 
Presentation Time 15 minutes 
Registration for IE 
Paper # ITS2018-84, IE2018-105 
Volume (vol) vol.118 
Number (no) no.449(ITS), no.450(IE) 
Page pp.227-232 
Date of Issue 2019-02-12 (ITS, IE) 

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