| Presentation | 2017-11-07 A Study of DCT-OFDM-Based Watermarking Scheme Assisted by Error Correcting Code Shogo Shigemoto, Minoru Kuribayashi, Nobuo Funabiki, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | There are two variants for the DCT-OFDM-based watermarking scheme that retains high robustness against various kinds of attacks. One is the SS (spread spectrum) method and the other is the QIM (quantization index modulation) method. The noise caused by attacks can be modeled as AWGN (additive white Gaussian noise) in the SS method while it is modeled as BSC (binary symmetric channel) in the QIM method. In order to introduce an error correcting code to improvement of robustness, it is necessary to estimate the variance of AWGN for SS method and the bit-flip probability in BSC for QIM method from the distorted content. In this paper, we propose the estimation methods for these parameters, and evaluate the error correcting capability under conditions based on IHC evaluation criteria. Through the experiments, the advantage in the SS method such that an optimal decoding algorithm is available is seriously suppressed by the difficulty in the control of host interference include from an input image, and hence, it is revealed that the performance becomes lower than the QIM method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Spread Spectrum(SS) / Quantization Index Modulation(QIM) / Error Correcting Code / Soft-Decision Decoding / Hard-Decision Decoding |
| Paper # | EMM2017-64 |
| Date of Issue | 2017-10-30 (EMM) |
| Conference Information | |
| Committee | EMM |
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| Conference Date | 2017/11/6(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kagoshima Univ. (Inamori Academy) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Multimedia Fusion, Content Processing, Multimedia Retrieval, Digital Watermarking, and Related Topics |
| Chair | Keiichi Iwamura(TUS) |
| Vice Chair | Hirohisa Hioki(Kyoto Univ.) / Minoru Kuribayashi(Okayama Univ.) |
| Secretary | Hirohisa Hioki(Shizuoka Univ.) / Minoru Kuribayashi(Tokyo Metro. Univ.) |
| Assistant | Kan Hyonho(NIT, Tokyo) / Harumi Murata(Chukyo Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Enriched MultiMedia |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study of DCT-OFDM-Based Watermarking Scheme Assisted by Error Correcting Code |
| Sub Title (in English) | |
| Keyword(1) | Spread Spectrum(SS) |
| Keyword(2) | Quantization Index Modulation(QIM) |
| Keyword(3) | Error Correcting Code |
| Keyword(4) | Soft-Decision Decoding |
| Keyword(5) | Hard-Decision Decoding |
| 1st Author's Name | Shogo Shigemoto |
| 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.) |
| Date | 2017-11-07 |
| Paper # | EMM2017-64 |
| Volume (vol) | vol.117 |
| Number (no) | EMM-282 |
| Page | pp.pp.47-52(EMM), |
| #Pages | 6 |
| Date of Issue | 2017-10-30 (EMM) |