| Presentation | 2002/2/25 Watermarking Scheme Allowing Desired Image-Quality by Considering the Finite Word-Length Masaaki FUJIYOSHI, Hitoshi KIYA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a watermarking scheme allowing desired image-quality exactly and automatically. The proposed scheme considers the finite word-length of a pixel, e.g., (1) the luminance of a pixel is represented as an integer, (2) the luminance of a pixel has the range-limitation, to generates a watermarked image of the exact desired quality. This proposed scheme embeds a watermark into the dc values of an image in the spatial domain. This embedding mechanism corresponds to that in which a watermark is embedded into dc components and simultaneously ac components are changed to achieve the desired image quality in the discrete cosine transform domain. Simulation results shows that a) this proposed scheme generates a watermarked image of the exact desired quality, b) the proposed scheme generates a high-quality watermarked image, e.g., a peak signal-to-noise ratio over 50 [dB], c) proposed scheme has JPEG resilience in practical use. From these advantages, this proposed method is useful for applications that require i) an embedding a watermark into huge number of images automatically, ii) a generating a watermarked image of the exact desired quality, such as a management of contents in a broadcast station and a digital museam. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital Watermarking / Image-Quality / Direct Current / Alternative Current / JPEG |
| Paper # | CS2001-127 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2002/2/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Systems (CS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Watermarking Scheme Allowing Desired Image-Quality by Considering the Finite Word-Length |
| Sub Title (in English) | |
| Keyword(1) | Digital Watermarking |
| Keyword(2) | Image-Quality |
| Keyword(3) | Direct Current |
| Keyword(4) | Alternative Current |
| Keyword(5) | JPEG |
| 1st Author's Name | Masaaki FUJIYOSHI |
| 1st Author's Affiliation | Department of Electrical Engineering, Tokyo Metropolitan University() |
| 2nd Author's Name | Hitoshi KIYA |
| 2nd Author's Affiliation | Department of Electrical Engineering, Tokyo Metropolitan University |
| Date | 2002/2/25 |
| Paper # | CS2001-127 |
| Volume (vol) | vol.101 |
| Number (no) | 669 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |