| 基于混合变换域的奇异值分解水印算法 |
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| 引用本文： | 温习,杨海奎,李敬魁,刘爱民,薛长生. 基于混合变换域的奇异值分解水印算法[J]. 微计算机信息, 2011, 0(3) |
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| 作者姓名： | 温习 杨海奎 李敬魁 刘爱民 薛长生 |
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| 作者单位： | 北京63961部队; |
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| 摘 要： | 提出一种基于离散小波变换(Discrete Wavelet Transform,DWT)及离散余弦变换(Discrete Cosine Transform,DCT)的混合变换域与奇异值分解(Singular Value Decomposition,SVD)相结合的数字水印算法。该算法将原始图像的小波子图进行分块DCT变换,抽取各块含图像大部分能量的部分合并,并对此矩阵进行奇异值分解再进行水印的嵌入。实验仿真表明,这种方法能抗大多数图像处理攻击,具有良好的鲁棒性。
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| 关 键 词： | 离散小波变换 离散余弦变换 奇异值分解 数字水印 |
A New Design Scheme for Watermark against geometry attack |
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| WEN Xi YANG Hai-kui LI Jing-kui LIU Ai-min XUE Chang-sheng. A New Design Scheme for Watermark against geometry attack[J]. Control & Automation, 2011, 0(3) |
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| Authors: | WEN Xi YANG Hai-kui LI Jing-kui LIU Ai-min XUE Chang-sheng |
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| Affiliation: | WEN Xi YANG Hai-kui LI Jing-kui LIU Ai-min XUE Chang-sheng(63961,BeiJing 100012,China) |
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| Abstract: | The paper proposes a new scheme of digital image watermarking based on the combination of DWT,DCT and SVD.The original image is decomposed with DWT into several subbands,and DCT is applied to transform the subbands to gain the areas of main characteristic and main energy of each block.Then SVD is applied to transform the combination of each block.The experimental results demonstrates the algorithm can keep good quality for watermarking image and has excellent robustness under the condition of the common ima... |
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| Keywords: | DWT DCT SVD digital watermarking |
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