| Presentation | 1999/10/21 Study on a Watermarking Method for Still Images Using DCT Takeharu Adachi, Madoka Hasegawa, Shigeo Kato, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, multimedia data such as still images, motion images and audio signals have been widely used. However, they can be simply and frequently duplicated without degradation, so that many copy problems may be caused. To solve this problem, copyright information as a signature and ID is embedded into an image. When images are used by unexpected some one without authentication, it is possible to protect copyright by extracting an embedded data from an image and verifying them. Such methods are called watermaiking methods. In this paper, we propose a watermaking method, where we use Discrete Cosine Transform (DCT) as orthogonal transform. Our proposed method is to embed data with considering embedded image quality and robustness to attack. Especially, the proposed scheme has much robustness for JPEG compression. Finally, we show simulation results for our proposed scheme. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | watermarking / still image / orthogonal transform / DCT |
| Paper # | HCS99-43 |
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| Conference Information | |
| Committee | HCS |
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| Conference Date | 1999/10/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Human Communication Science (HCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on a Watermarking Method for Still Images Using DCT |
| Sub Title (in English) | |
| Keyword(1) | watermarking |
| Keyword(2) | still image |
| Keyword(3) | orthogonal transform |
| Keyword(4) | DCT |
| 1st Author's Name | Takeharu Adachi |
| 1st Author's Affiliation | Graduate School of Engineering, Utsunomiya University() |
| 2nd Author's Name | Madoka Hasegawa |
| 2nd Author's Affiliation | Graduate School of Engineering, Utsunomiya University |
| 3rd Author's Name | Shigeo Kato |
| 3rd Author's Affiliation | Graduate School of Engineering, Utsunomiya University |
| Date | 1999/10/21 |
| Paper # | HCS99-43 |
| Volume (vol) | vol.99 |
| Number (no) | 384 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |