| DCT域图像水印方案的可靠性分析 |
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| 引用本文： | 张华熊,孙水发,仇佩亮. DCT域图像水印方案的可靠性分析[J]. 计算机辅助设计与图形学学报, 2004, 16(9): 1231-1234 |
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| 作者姓名： | 张华熊 孙水发 仇佩亮 |
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| 作者单位： | 浙江理工大学信息电子学院,杭州,310038;浙江大学信息与电子工程系,杭州,310027 |
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| 摘 要： | 基于一种全帧DCT域图像水印方案，推导了水印相关检测器的误检测概率公式．理论分析表明：检测器的误检测概率与图像本身无关，只取决于嵌入水印长度和嵌入强度因子．文中的分析显示了哪些因素会影响检测性能，有助于优化水印系统．最后，给出了相应的实验结果．
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| 关 键 词： | 版权保护 数字水印 可靠性分析 全帧DCT |
Reliability Analysis of DCT-Domain Image Watermarking Schemes |
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| Zhang Huaxiong. Reliability Analysis of DCT-Domain Image Watermarking Schemes[J]. Journal of Computer-Aided Design & Computer Graphics, 2004, 16(9): 1231-1234 |
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| Authors: | Zhang Huaxiong |
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| Affiliation: | Zhang Huaxiong~ |
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| Abstract: | Concerning the mathematical model for evaluating reliability of digital watermarking system, a formula of error probability for a correlation-based watermarking detector is derived under a full frame DCT(discrete cosine transform) domain image watermarking schemes. Theoretical analysis indicates that error probability of detector is independent of image itself, but only relies on the length of embedding watermarks and embedding strength factor. Analysis of this paper reveals the factors that may influence the reliability of detection, this can help us optimize watermarking system. Corresponding experimental results are illustrated. |
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| Keywords: | copyright protection digital watermarking reliability analysis full frame DCT |
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