| Presentation | 2018-09-28 Dynamic Estimation of Collusion Strategy for the Detection of Colluders in Fingerprinting Codes Tatsuya Yasui, Minoru Kuribayashi, Nobuo Funabiki, Isao Echizen, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An optimal detector known as MAP detector has been proposed for the probabilistic fingerprintingcode. It needs two kinds of important information. One is the collusion strategy used at the generation of a pirated codeword from colluders’ codewords, and the other is the number of colluders. In our previous study, these two parameters can be estimated with high probability for Nuida code. However, its computational cost is linearly increased with the number of estimated candidates. In this study, in order to reduce the computational cost, we proposed a dynamic estimator which adjusts dynamically the number of estimated candidates. Since the characteristics calculated from a pirated codeword are different for collusion strategies, we measure characteristic vectors in multi-dimensional space derived both from each collusion strategy and the number of colluders, and find candidates which vectors are within a certain distance from the vector calculated from a pirated codeword. As a result of computer simulations, it is confirmed that the proposed method can cut the computational cost about half with little sacrifice in the detection accuracy. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | fingerprinting code / optimal detector / collusion strategy / number of colluders / estimator |
| Paper # | LOIS2018-19,IE2018-39,EMM2018-58 |
| Date of Issue | 2018-09-20 (LOIS, IE, EMM) |
| Conference Information | |
| Committee | IEE-CMN / EMM / LOIS / IE / ITE-ME |
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| Conference Date | 2018/9/27(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Beppu Int'l Convention Ctr. aka B-CON Plaza |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multimedia Communication/System, Lifelog Applications, IP Broadcasting/Video Transmission, Media Security, Media Processing (AI, Deep Learning), etc. |
| Chair | Shun Morimura(CRIEPI) / Keiichi Iwamura(TUC) / Tomohiro Yamada(NTT) / Takayuki Hamamoto(Tokyo Univ. of Science) / Miki Haseyama(北大) |
| Vice Chair | / Minoru Kuribayashi(Okayama Univ.) / Tetsuya Kojima(NIT,Tokyo College) / Toru Kobayashi(Nagasaki Univ.) / Hideaki Kimata(NTT) / Kazuya Kodama(NII) / Norio Tagawa(Tokyo Metropolitan Univ.) |
| Secretary | (Tokai Univ.) / Minoru Kuribayashi(Kansai Univ.) / Tetsuya Kojima(NIT, Tokyo) / Toru Kobayashi(Chukyo Univ.) / Hideaki Kimata(NTT) / Kazuya Kodama(Research Organization of Information and Systems) / Norio Tagawa(KDDI Research) |
| Assistant | Tomotaka Kimura(Doshisha Univ.) / 田中 彰浩(CRIEPI) / Hiroko Akiyama(NIT, Nagano College) / Kitahiro Kaneda(CANON) / Shinichiro Eitoku(NTT) / Kazuya Hayase(NTT) / Yasutaka Matsuo(NHK) |
| Paper Information | |
| Registration To | Technical Meeting on Communications / Technical Committee on Enriched MultiMedia / Technical Committee on Life Intelligence and Office Information Systems / Technical Committee on Image Engineering / Technical Group on Media Engineering |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Dynamic Estimation of Collusion Strategy for the Detection of Colluders in Fingerprinting Codes |
| Sub Title (in English) | |
| Keyword(1) | fingerprinting code |
| Keyword(2) | optimal detector |
| Keyword(3) | collusion strategy |
| Keyword(4) | number of colluders |
| Keyword(5) | estimator |
| 1st Author's Name | Tatsuya Yasui |
| 1st Author's Affiliation | Okayama University(Okayama Univ.) |
| 2nd Author's Name | Minoru Kuribayashi |
| 2nd Author's Affiliation | Okayama University(Okayama Univ.) |
| 3rd Author's Name | Nobuo Funabiki |
| 3rd Author's Affiliation | Okayama University(Okayama Univ.) |
| 4th Author's Name | Isao Echizen |
| 4th Author's Affiliation | National Institute of Informatics(NII) |
| Date | 2018-09-28 |
| Paper # | LOIS2018-19,IE2018-39,EMM2018-58 |
| Volume (vol) | vol.118 |
| Number (no) | LOIS-222,IE-223,EMM-224 |
| Page | pp.pp.65-70(LOIS), pp.65-70(IE), pp.65-70(EMM), |
| #Pages | 6 |
| Date of Issue | 2018-09-20 (LOIS, IE, EMM) |