| A new asymmetric watermarking scheme based on a real fractional DCT-I transform |
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| 作者姓名： | 桂国富 蒋铃鸽 何晨 |
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| 作者单位： | Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| 基金项目： | Project （Nos. 60372076 and 60272082） supported by the National Natural Science Foundation of China |
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| 摘 要： |
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| 关 键 词： | 不对称水印 分形变换 DCT-I变换 安全性 |
| 收稿时间： | 2005-08-25 |
| 修稿时间： | 2005-12-28 |
A new asymmetric watermarking scheme based on a real fractional DCT-I transform |
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| Guo-fu Gui,Ling-ge Jiang,Chen He.A new asymmetric watermarking scheme based on a real fractional DCT-I transform[J].Journal of Zhejiang University Science,2006,7(3):285-288. |
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| Authors: | Guo-fu Gui Ling-ge Jiang Chen He |
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| Institution: | (1) Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China |
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| Abstract: | A new asymmetric watermarking scheme is proposed in this letter. In the proposed scheme, a secret real fractional DCT-I transform and a primitive watermark are employed to generate an asymmetric watermark. The secret watermark for embedding is derived from the primitive watermark, and is embedded in the large fractional DCT-I transformation coefficients of a cover signal. The asymmetric detection procedure is performed using a correlation test. Simulation results showed that the asymmetric detection is reliable, and that the scheme can provide minimum security. |
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| Keywords: | Asymmetric watermarking DCT-I Fractional transforms |
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