| 一种Contourlet域图像鲁棒水印算法 |
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| 引用本文： | 顾国生,何元烈.一种Contourlet域图像鲁棒水印算法[J].计算机工程与应用,2010,46(14):179-181. |
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| 作者姓名： | 顾国生 何元烈 |
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| 作者单位： | 广东工业大学 计算机学院，广州 510006 |
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| 基金项目： | 广东省博士启动基金(No.9451009001002711) |
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| 摘 要： | 对新一代图像多分辨分析工具Contourlet变换的特性进行了分析和讨论，在此基础上提出了一种利用矩阵SVD分解的稳定性在Contourlet域中频子带系数中进行二值伪随机水印信号嵌入的算法。嵌入时，对中频子带分块，根据块能量选择最终嵌入位置，同时兼顾了鲁棒性和透明性的要求。实验结果与理论分析相符，并且对常见的图像处理操作具有很好的鲁棒性。
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| 关 键 词： | Contourlet 混沌 奇异值分解 |
| 收稿时间： | 2010-1-18 |
| 修稿时间： | 2010-3-5
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Image watermarking algorithm based on Contourlet transform |
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| GU Guo-sheng,HE Yuan-lie.Image watermarking algorithm based on Contourlet transform[J].Computer Engineering and Applications,2010,46(14):179-181. |
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| Authors: | GU Guo-sheng HE Yuan-lie |
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| Affiliation: | Faculty of Computer，Guangdong University of Technology，Guangzhou 510006，China |
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| Abstract: | This paper presents a watermarking algorithm based on Contourlet transform and SVD.Efficient chaotic maps are used to produce pseudo-random watermark signals.The middle-frequency subbands are divided into square blocks.Watermark bits are embedded in the SVD of important blocks according to block-energy.The simulation also implies that the Contourlet based algorithm has fine robustness and invisibility for the common image processing technique. |
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| Keywords: | Contourlet Contourlet chaotic Singular Value Deeomposition (SVD) |
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