Analysis of Gray-scale Watermark System Based on Energy Estimation
Tian Feng-chun · Jisuanji gongcheng · 2009
Aiming at the defects of design theory of a kind of gray-scale watermarking system,this paper gives a series of theory results to guide this kind of gray-scale watermarking algorithms,including quantitative descriptions among the embedding strength,the robustness and the invisibility.The compromise between invisibility and the robustness is presented.The results are verified by the existing algorithms.Experimental results show that these results are of great guiding significance to gray-scale watermark algorithms design.