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| Presentation | 2011-11-15 10:45 Statistical mechanical evaluation of spread spectrum watermarking model with image restoration Masaki Kawamura (Yamaguchi Univ.), Tatsuya Uezu (Nara Women's Univ.), Masato Okada (Univ. Tokyo)  EMM2011-49 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In case that the original image is blind, we can consider a decoding method such that both the image and the messages are estimated simultaneously. We propose a spread spectrum watermarking model with image restoration, and then analyze its performance by the replica method, which is one of the statistical mechanical methods. We calculate the theoretical value of bit error rate from obtained saddle point equations, and check it by computer simulations. For this purpose, we assume that the image is binary and is generated from given prior probability. And also, we assume attack can be represented by the Gaussian channel. In the result, results by the computer simulations agree with the theoretical values. Furthermore, we evaluate the performance in cases where the image is blind or informed. As a result, the difference between both cases is much small, when the embedding rate and attack level is small enough. Consequently, the proposed method with simultaneous estimation is effective as the watermarking decoder. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | digital watermarking / image restoration / statistical mechanical informatics / replica method / saddle point equation / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 287, EMM2011-49, pp. 53-58, Nov. 2011. | |
| Paper # | EMM2011-49 | |
| Date of Issue | 2011-11-07 (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 | EMM2011-49 |
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| Conference Information | |
| Committee | EMM |
| Conference Date | 2011-11-14 - 2011-11-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EMM |
| Conference Code | 2011-11-EMM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Statistical mechanical evaluation of spread spectrum watermarking model with image restoration |
| Sub Title (in English) | |
| Keyword(1) | digital watermarking |
| Keyword(2) | image restoration |
| Keyword(3) | statistical mechanical informatics |
| Keyword(4) | replica method |
| Keyword(5) | saddle point equation |
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| Keyword(7) | |
| 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 | 2011-11-15 10:45:00 |
| Presentation Time | 30 minutes |
| Registration for | EMM |
| Paper # | EMM2011-49 |
| Volume (vol) | vol.111 |
| Number (no) | no.287 |
| Page | pp.53-58 |
| #Pages | 6 |
| Date of Issue | 2011-11-07 (EMM) |
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