Paper Abstract and Keywords |
Presentation |
2019-10-25 11:10
Image Compression in Encryption-then-Compression System Using Secure Sparse Representations Takayuki Nakachi (NTT), Hitoshi Kiya (Tokyo Metro. Univ.) SIS2019-21 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
n this paper, we propose a image compression method using secure sparse representations in Encryption-then-Compression (EtC) systems, and evaluate the effectiveness of the proposed scheme. Conventional secure image transmission is based on Compression-then-Encryption (CtE) systems where image compression has to be conducted prior to image encryption. As encryption methods in the conventional EtC systems, the secure space coding has been proposed. However, the sparse coefficients estimated by the conventional secure sparse coding are not encrypted. It leads potential risks that the images may be reconstructed when the dictionary leaks due to some accidents. We propose an EtC system to estimate encrypted sparse coefficients from the encrypted images. Simulation results show the images can not be reconstructed when the dictionary leaks. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
EtC System / Image Compression / Sparse Representation / Random Unitary Transform / Secure Computation / / / |
Reference Info. |
IEICE Tech. Rep., vol. 119, no. 240, SIS2019-21, pp. 77-82, Oct. 2019. |
Paper # |
SIS2019-21 |
Date of Issue |
2019-10-17 (SIS) |
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) |
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SIS2019-21 |
Conference Information |
Committee |
ITE-BCT SIS |
Conference Date |
2019-10-24 - 2019-10-25 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Fukui International Activities Plaza |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
System Implementation Technology, Short Range Wireless Systems, Smart Multimedia Systems, Broadcasting Technology, etc. |
Paper Information |
Registration To |
SIS |
Conference Code |
2019-10-BCT-SIS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Image Compression in Encryption-then-Compression System Using Secure Sparse Representations |
Sub Title (in English) |
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Keyword(1) |
EtC System |
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Image Compression |
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Sparse Representation |
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Random Unitary Transform |
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Secure Computation |
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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 |
2019-10-25 11:10:00 |
Presentation Time |
20 minutes |
Registration for |
SIS |
Paper # |
SIS2019-21 |
Volume (vol) |
vol.119 |
Number (no) |
no.240 |
Page |
pp.77-82 |
#Pages |
6 |
Date of Issue |
2019-10-17 (SIS) |
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