IEICE Technical Committee Submission System
Conference Paper's Information
Online Proceedings
[Sign in]
... (for ESS/CS/ES/ISS)
Tech. Rep. Archives
... (for ES/CS)
 Go Top Page Go Previous   [Japanese] / [English] 

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
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF 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)  
Keyword(1) EtC System  
Keyword(2) Image Compression  
Keyword(3) Sparse Representation  
Keyword(4) Random Unitary Transform  
Keyword(5) 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.)
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
Date Time 2019-10-25 11:10:00 
Presentation Time 20 
Registration for SIS 
Paper # IEICE-SIS2019-21 
Volume (vol) IEICE-119 
Number (no) no.240 
Page pp.77-82 
#Pages IEICE-6 
Date of Issue IEICE-SIS-2019-10-17 

[Return to Top Page]

[Return to IEICE Web Page]

The Institute of Electronics, Information and Communication Engineers (IEICE), Japan