| Presentation | 1999/5/20 A Robust Watermarking Scheme for Digital Still Images Based on Discrete Fourier Transform Takaya Kasai, Hiroki Koga, Hirosuke Yamamoto, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Two digital watermarking schemes for gray-scale still images based on the discrete Fourier transform are discussed in this paper. By analyzing characteristics of the JPEG image compression scheme, we first develop a simple scheme for embedding a digital watermark and an algorithm for verifying the embedded digital watermark. It is shown, however, that the simple scheme cannot have many variations of digital watermarks if we consider attacks making the embedded digital watermark unverifiable. In order to increase the variations, we propose another digital watermarking scheme that makes use of the uniformity of arguments of the discrete Fourier transformation of the original image. It turns out that the new scheme not only has more variations of digital watermarks but also robust against the same attacks. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | digital watermarking / discrete Fourier transform / JPEG compression / attack against watermark |
| Paper # | ISEC99-7 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 1999/5/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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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) | A Robust Watermarking Scheme for Digital Still Images Based on Discrete Fourier Transform |
| Sub Title (in English) | |
| Keyword(1) | digital watermarking |
| Keyword(2) | discrete Fourier transform |
| Keyword(3) | JPEG compression |
| Keyword(4) | attack against watermark |
| 1st Author's Name | Takaya Kasai |
| 1st Author's Affiliation | Graduate School of Engineering, University of Tokyo() |
| 2nd Author's Name | Hiroki Koga |
| 2nd Author's Affiliation | Faculty of Engineering Systems, University of Tsukuba |
| 3rd Author's Name | Hirosuke Yamamoto |
| 3rd Author's Affiliation | Graduate School of Engineering, University of Tokyo |
| Date | 1999/5/20 |
| Paper # | ISEC99-7 |
| Volume (vol) | vol.99 |
| Number (no) | 57 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |