| 基于DFT-SVD域抗几何攻击图像水印算法 |
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| 引用本文： | 张宪海,杨永田. 基于DFT-SVD域抗几何攻击图像水印算法[J]. 计算机工程, 2006, 32(18): 120-121 |
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| 作者姓名： | 张宪海 杨永田 |
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| 作者单位： | 哈尔滨工程大学计算机科学与技术学院,哈尔滨,150001 |
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| 摘 要： | 抗几何攻击水印算法是版权保护领域的一个重要的研究方向。根据离散傅立叶变换幅度谱矩阵的性质，以及矩阵奇异值分解对旋转、缩放和平移等几何攻击具有稳定性的特点，提出了一种基于离散傅立叶变换和奇异值分解的抗几何攻击图像水印算法。实验结果表明该算法有较大的嵌入容量，对常规攻击和几何攻击都具有较强的鲁棒性。
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| 关 键 词： | 水印 离散傅立叶变换 奇异值分解 几何攻击 |
| 文章编号： | 1000-3428（2006）18-0120-02 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2005-10-08 |
A Geometric Distortion Resilient Image Watermark Algorithm Based on DFT-SVD |
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| ZHANG Xianhai,YANG Yongtian. A Geometric Distortion Resilient Image Watermark Algorithm Based on DFT-SVD[J]. Computer Engineering, 2006, 32(18): 120-121 |
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| Authors: | ZHANG Xianhai YANG Yongtian |
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| Affiliation: | School of Computer Science and Technology, Harbin Engineering University, Harbin 150001 |
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| Abstract: | The algorithm resilient geometric distortion is an important research direction in copyright protection. This paper proposes an image watermark algorithm based on discrete Fourier transform (DFT) and singular value decomposition (SVD) because of the good property of DFT amplitude matrix and the characteristic of SVD that it is stabilization to geometric distortion such as rotation, scale and translation. Experimental results show that the algorithm has more embedding capacity and robust to common attacks and geometric distortion. |
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| Keywords: | Watermark Discrete Fourier transform (DFT) Singular value decomposition (SVD) Geometric distortion |
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