Image watermarking algorithm based on Contourlet transform

doi:10.3778/j.issn.1002-8331.2010.14.052

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (14): 179-181.DOI: 10.3778/j.issn.1002-8331.2010.14.052

• 图形、图像、模式识别 • Previous Articles Next Articles

Image watermarking algorithm based on Contourlet transform

GU Guo-sheng，HE Yuan-lie

Faculty of Computer，Guangdong University of Technology，Guangzhou 510006，China

Received:2010-01-18 Revised:2010-03-05 Online:2010-05-11 Published:2010-05-11
Contact: GU Guo-sheng

一种Contourlet域图像鲁棒水印算法

顾国生，何元烈

广东工业大学计算机学院，广州 510006

通讯作者: 顾国生

Abstract

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.

Key words: Contourlet, chaotic, Singular Value Decomposition（SVD）

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。

关键词: Contourlet, 混沌, 奇异值分解

CLC Number:

TP309

GU Guo-sheng，HE Yuan-lie. Image watermarking algorithm based on Contourlet transform[J]. Computer Engineering and Applications, 2010, 46(14): 179-181.

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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Image watermarking algorithm based on Contourlet transform

一种Contourlet域图像鲁棒水印算法

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