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| Paper Abstract and Keywords | ||
| Presentation | 2012-07-19 13:30 Performance evaluation of digital watermarking model with image restoration -- image restoration using 2D Ising model -- Masaki Kawamura (Yamaguchi Univ.), Tatsuya Uezu (Nara Women's Univ.), Masato Okada (Univ. Tokyo)  ISEC2012-13 SITE2012-9 ICSS2012-15 EMM2012-5 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We evaluate the decoding performance in the case that the prior probability is given by 2D Ising model in a spread spectrum watermarking model which estimates both image and messages. When an estimated image is restored from a tampered image, we need to assume some prior probability. For the infinite range model, saddle point equations have been derived by the replica theory, and then the performance has been evaluated. Natural images requires further prior probabilities. The 2D Ising model can represent cluster patterns. For this model, since the replica theory cannot be applied, we calculate bit error rate by computer simulations. In the result, results using the 2D Ising model show that the image restoration is effective to decode the messages as well as the infinite range model. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | digital watermarking / Bayes estimation / image restoration / 2D Ising model / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 129, EMM2012-5, pp. 29-34, July 2012. | |
| Paper # | EMM2012-5 | |
| Date of Issue | 2012-07-12 (ISEC, SITE, ICSS, EMM) | |
| 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 | ISEC2012-13 SITE2012-9 ICSS2012-15 EMM2012-5 |
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| Conference Information | |
| Committee | EMM ISEC SITE ICSS IPSJ-CSEC IPSJ-SPT |
| Conference Date | 2012-07-19 - 2012-07-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Security |
| Paper Information | |
| Registration To | EMM |
| Conference Code | 2012-07-EMM-ISEC-SITE-ICSS-CSEC-SPT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance evaluation of digital watermarking model with image restoration |
| Sub Title (in English) | image restoration using 2D Ising model |
| Keyword(1) | digital watermarking |
| Keyword(2) | Bayes estimation |
| Keyword(3) | image restoration |
| Keyword(4) | 2D Ising model |
| Keyword(5) | |
| Keyword(6) | |
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| Keyword(8) | |
| 1st Author's Name | Masaki Kawamura |
| 1st Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name | Tatsuya Uezu |
| 2nd Author's Affiliation | Nara Women's University (Nara Women's Univ.) |
| 3rd Author's Name | Masato Okada |
| 3rd Author's Affiliation | The University of Tokyo (Univ. Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2012-07-19 13:30:00 |
| Presentation Time | 25 minutes |
| Registration for | EMM |
| Paper # | ISEC2012-13, SITE2012-9, ICSS2012-15, EMM2012-5 |
| Volume (vol) | vol.112 |
| Number (no) | no.126(ISEC), no.127(SITE), no.128(ICSS), no.129(EMM) |
| Page | pp.29-34 |
| #Pages | 6 |
| Date of Issue | 2012-07-12 (ISEC, SITE, ICSS, EMM) |
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