计算机工程与应用2011，Vol.47Issue(2)：185-189,212,6.DOI:10.3778/j.issn.1002-8331.2011.02.056
抗几何攻击的整数小波变换数字图像水印技术
Image watermarking algorithm based on integer wavelet transform to resist geometric attacks
陈刚 1陈宁 2胡安峰2
作者信息
- 1. 江汉大学,数学与计算机学院,武汉,430056
- 2. 中南大学,信息科学与工程学院,长沙,410083
- 折叠
摘要
Abstract
Geometric attacks are difficult to resist for watermarking algorithms.Although most existing geometric-resisted algorithms can resist some kinds of geometric attacks, however, their robustness to common image processing is week. A watermarking algorithm which is both strongly robust to geometric attacks and common image processing is proposed in this paper. Watermarking messages combined a Gaussian-noise template are embedded to vertical high frequency coefficients which are produced by one-level integer wavelet transform of the host image.Then the same messages are embedded to each sub-image by quantization repeatedly. Two watermarking images are extracted by correlation calculation and majority rule. Finally,the ultimate watermarking is decided by a judge rule.Experiment results show the algorithm is both robust to geometric attacks and common image processing,meanwhile,the imperceptibility of the algorithm can meet the request.关键词
几何攻击/常规图像处理攻击/鲁棒性/整数小波变换/量化Key words
geometric attacks /common image processing/ robustness/ integer wavelet transform/ quantization分类
信息技术与安全科学引用本文复制引用
陈刚,陈宁,胡安峰..抗几何攻击的整数小波变换数字图像水印技术[J].计算机工程与应用,2011,47(2):185-189,212,6.
