| Presentation | 2007-12-19 A Lossless Image Authentication Scheme for Tamper-Proofing Tomoya TANAKA, Koki ABE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an image authentication scheme that does not have any influence on images at all. Conventional semi-fragile watermarking using discrete wavelet transform embeds watermarks to DWT image coefficients. Instead, the proposed scheme generates the relation between DWT coefficients and author information and stores the relation as the key. In authentication process, instead of extracting watermarks from the DWT coefficient of image, the scheme detects the author information from the stored key, and restores the information as well as discovers tampers. The experiment revealed that the author information is more robust and more correctly restored against non-malicious distortions such as JPEG compression, soft focus, shrinking and enlargement than the conventional semi-fragile watermarking scheme. It was also found that tampers can be correctly discovered against such distortions. The increase of memory cost for storing the key was about 10% compared with the conventional method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | DWT / authentication / tamper-proofing / lossless |
| Paper # | ISEC2007-126 |
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| Conference Information | |
| Committee | ISEC |
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| Conference Date | 2007/12/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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 Lossless Image Authentication Scheme for Tamper-Proofing |
| Sub Title (in English) | |
| Keyword(1) | DWT |
| Keyword(2) | authentication |
| Keyword(3) | tamper-proofing |
| Keyword(4) | lossless |
| 1st Author's Name | Tomoya TANAKA |
| 1st Author's Affiliation | Department of Computer Science, The University of Electro-Communications() |
| 2nd Author's Name | Koki ABE |
| 2nd Author's Affiliation | Department of Computer Science, The University of Electro-Communications |
| Date | 2007-12-19 |
| Paper # | ISEC2007-126 |
| Volume (vol) | vol.107 |
| Number (no) | 397 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |