| Presentation | 2012-07-19 Performance evaluation of digital watermarking model with image restoration : image restoration using 2D Ising model Masaki KAWAMURA, Tatsuya UEZU, Masato OKADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(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 require 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) |
| Keyword(in English) | digital watermarking / Bayes estimation / image restoration / 2D Ising model |
| Paper # | ISEC2012-13,SITE2012-9,ICSS2012-15,EMM2012-5 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2012/7/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Information Security (ISEC) |
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| Language | JPN |
| 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 : image restoration using 2D Ising model |
| Sub Title (in English) | |
| Keyword(1) | digital watermarking |
| Keyword(2) | Bayes estimation |
| Keyword(3) | image restoration |
| Keyword(4) | 2D Ising model |
| 1st Author's Name | Masaki KAWAMURA |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Yamaguchi University() |
| 2nd Author's Name | Tatsuya UEZU |
| 2nd Author's Affiliation | Graduate School of Humanities and Sciences, Nara Women's University |
| 3rd Author's Name | Masato OKADA |
| 3rd Author's Affiliation | Graduate School of Frontier Sciences, The University of Tokyo:RIKEN Brain Science Institute |
| Date | 2012-07-19 |
| Paper # | ISEC2012-13,SITE2012-9,ICSS2012-15,EMM2012-5 |
| Volume (vol) | vol.112 |
| Number (no) | 126 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |