| 基于DWT-SVD 域的鲁棒数字图像水印算法 |
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| 引用本文： | 郑融.基于DWT-SVD 域的鲁棒数字图像水印算法[J].黄石理工学院学报,2008,24(1):25-29. |
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| 作者姓名： | 郑融 |
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| 作者单位： | 武汉大学东湖分校计算机科学学院,湖北,武汉,430212 |
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| 摘 要： | 提出了一种基于DWT-SVD)域的鲁棒数字图像水印算法.该算法利用灰度图像作为水印,将其置乱加密后再进行 SVD 分解,然后将分解得到的奇异值嵌入到图像小波变换后的各频带的奇异值之中,水印嵌入强度随频带不同而不同.仿真实验结果表明,该算法对于常见的信号处理、JPEG压缩和几何失真具有较高的鲁棒性.
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| 关 键 词： | 数字水印 奇异值分解 小波变换 |
| 文章编号： | 1008-8245（2008）01-0025-05 |
| 收稿时间： | 2007-11-06 |
| 修稿时间： | 2007年11月6日 |
Robust Digital Image Watermarking Algorithm Based on DWT- SVD |
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| ZHENG Rong.Robust Digital Image Watermarking Algorithm Based on DWT- SVD[J].Journal of Huangshi Institute of Technology,2008,24(1):25-29. |
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| Authors: | ZHENG Rong |
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| Abstract: | This paper introduces a robust digital image watermarking algorithm based on DWT - SVD. A gray image that has been dealt with by shuffle is made singular value decomposition firstly. After decomposing the cover image into four bands, the SVD is applied to each band, and embed the same watermark data by modifying the singular values. Simulation results show that high robustness can be obtained under the attack of normal signal processing, JPEG compression and geometric distortion. |
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| Keywords: | digital watermark singular value decomposition wavelet domain |
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