Research on the Public Watermarking Technology Based on DWT
Taoshen Li, Zhiqiang Wen · Guangxi kexue · 2006
By introducing chaos system in existing public watermarking model,a new public watermarking technology based on DWT is proposed.While embedding watermarking,the watermarking sequences are produced by the chaos system,and are embedded into the low frequent coefficient of DWT domain to guarantee the robustness of watermarking.In the experiment,the performance of watermark against attacks using the different index factors is analyzed and the experiment results show that the robustness of watermark is better when the value of index factor is between 0.1 and 0.2.