归一化的鲁棒性盲水印技术  

Normalized Robust Blind Watermarking Technology

作　　者：陈青[1] 张小亮[1] 马文君[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《通信电源技术》2015年第1期38-41,共4页Telecom Power Technology

基　　金：国家863计划(2012AA050206);上海市自然科学基金(12ZR1420800)

摘　　要：针对目前通信技术中,鲁棒性水印技术面临的抗几何攻击这一难题,且现有鲁棒性水印算法不足,文中提出归一化鲁棒性的盲水印算法,以恢复水印同步性为目的,通过整合图像归一化技术、小波变换、加密置乱和盲水印等处理方法,并利用图像归一化所具有的几何不变性,研究能抵抗几何攻击的鲁棒性水印算法。实验结果表明:嵌入水印图像对常规的信号处理和几何攻击有很强的鲁棒性,尤其在同步攻击的放缩和拉伸攻击及旋转攻击方面效果更为显著。文中所提出的水印算法大大提高了现有水印算法对于旋转攻击的鲁棒性,有很重要的现实意义。Considering the shortage of robust watermarking algorithm against geometric attacks in current eommumca- tion technology, a new normalized robust blind watermarking algorithm is proposed in this article to solve the problerru Ai- ming at recovering the watermark synchronicity, the Mgorithm integrates the image normalization technique, wavelet trans- form processing methods, encryption scrambling and blind watermarking and also utilizes the geometry invariance in image normalization. The experimental results show that the embedded watermark image has very strong robustness to common signal processing and geometric attacks, especially the synchronization attack, zooming, tensile and rotational attack. Wa- termarking algorithm proposed in this paper greatly improves the robustness of watermarking algorithm to rotational attack which has very important practical significance.

关 键 词：鲁棒水印 小波变换 图像归一化 几何攻击 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]