Analysis and study of robustness of digital watermarking
Ning Chen · Jisuanji gongcheng yu sheji · 2005
Thebasicframeofdigitalimagewatermarkingsystemisdiscussed, andthefunctionsofeverypartinthewatermarkingsystem is introduced briefly. The concept of the robustness, the factors affecting the robustness, the strategies used to realize the robustness and the methods evaluating the robustness are set forth at length and the importance of robustness in digital watermarking system is ex- plained. Finally, an arithmetic used to estimate the robustness of digital image watermarking system is put forward, which is based on the watermarking model withblind detector. And the descriptionof the arithmetic is given. Because thisarithmetic has the same academic gist with spread-spectrum technique and has easy computing process, it is reasonable and effective theoretically.