| Science Letters:A new asymmetric watermarking scheme based on a real fractional DCT-I transform |
| |
| 作者姓名： | 桂国富 蒋铃鸽 何晨 |
| |
| 作者单位： | Department of Electronic Engineering Shanghai Jiao Tong University Shanghai 200240 China，Department of Electronic Engineering，Shanghai Jiao Tong University Shanghai 200240 China，Department of Electronic Engineering，Shanghai Jiao Tong University Shanghai 200240 China |
| |
| 基金项目： | Project (Nos. 60372076 and 60272082) supported by the National Natural Science Foundation of China |
| |
| 摘 要： | INTRODUCTIONDue to the ease of transmitting digital data and copying without loss of quality, the unauthorized distribution of digital multimedia contents has be-come easy and popular. Digital watermarking is the most promising technique to protect the copyright of digital multimedia contents (Cox et al., 2001). Most of the proposed watermarking schemes are symmetric, in which keys for watermark detecting are identical to those for watermark embedding. Therefore, symmet-ric watermarking s…
|
Science Letters: A new asymmetric watermarking scheme based on a real fractional DCT-I transform |
| |
| GUI Guo-fu,JIANG Ling-ge,HE Chen.Science Letters:A new asymmetric watermarking scheme based on a real fractional DCT-I transform[J].Journal of Zhejiang University Science,2006,7(3). |
| |
| Authors: | GUI Guo-fu JIANG Ling-ge HE Chen |
| |
| 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 em-bedding 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. |
| |
| Keywords: | Asymmetric watermarking DCT-I Fractional transforms |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
