A Blind Watermarking Algorithm Resisting to Geometric Transforms Based on SVD  

作　　者：LI Xiuguang YANG Xiaoyuan 

机构地区：[1]Department of Electronic Technology, Engineering Universityof Chinese People＇s Armed Police Force, Xi＇an 710086, Shaanxi,China

出　　处：《Wuhan University Journal of Natural Sciences》2011年第6期487-492,共6页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China (60842006)

摘　　要：A new watermarking algorithm resisting to geometric transformation based on singular value decomposition （SVD） in logarithm polar coordinate is proposed. The log-polar mapping （LPM） is used to resist rotation and scaling attacks, and the odd-even quantization algorithm is used to embed watermark so it can be extracted without the original host image. The experiments show that the proposed algorithm not only resists various geomet- ric attacks but also is robust enough to the common signal processing.A new watermarking algorithm resisting to geometric transformation based on singular value decomposition （SVD） in logarithm polar coordinate is proposed. The log-polar mapping （LPM） is used to resist rotation and scaling attacks, and the odd-even quantization algorithm is used to embed watermark so it can be extracted without the original host image. The experiments show that the proposed algorithm not only resists various geomet- ric attacks but also is robust enough to the common signal processing.

关 键 词：blind watermarking singular value decomposition（SVD） logarithm polar coordinate resist to geometric transform 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]