计算机应用研究2012，Vol.29Issue(11)：4327-4330,4.DOI:10.3969/j.issn.1001-3695.2012.11.084
基于混沌的Contourlet域抗几何攻击图像水印算法
Image watermarking algorithm against geometrical attacks in Contourlet domain based on chaos
摘要
Abstract
In order to improve the robustness against geometrical attacks and self-adaptability, this paper proposed an adaptive image watermarking algorithm in Contourlet domain based on chaos. Firstly, it applied a Contourlet transform to the cover image,and divided the low frequency sub-band into many blocks which were decomposed with singular value decomposition ( SVD). Secondly, it adaptively embedded the watermark information with chaotic encryption into the largest singular value of every block based on human visual system ( HVS). Finally, it extracted the feature points by the improved Harris-Laplace operator. During detection, restored the attacked imageby using feature points of it and those of the watermarked image. Experimental results show the proposed algorithm is robust to common image processing and geometric attacks such as JPEG compression , filtering, noise addition, rotation, scaling and translation.关键词
数字水印/Contourlet变换/几何攻击/特征点/混沌/自适应性Key words
digital watermarking/ Contourlet transform/ geometric attacks/ feature points/ chaos/ self-adaptability分类
信息技术与安全科学引用本文复制引用
李峰,陈光喜,丁勇..基于混沌的Contourlet域抗几何攻击图像水印算法[J].计算机应用研究,2012,29(11):4327-4330,4.基金项目
国家自然科学基金资助项目(60963024) （60963024）
广西可信软件重点实验室开放基金 （）
