Blind watermarking algorithm for color image guided by visual model
Wangsheng Fang, Yunan Li, Rong Zhang · Jisuanji yingyong yanjiu · 2011
This paper proposed a new blind watermarking algorithm for the color image to better solve the incompatible problem between invisibility and robustness.Firstly,the RGB space model of color host image transformed to YCbCr mode,then,each component implemented block processing and one-level discrete wavelet transform,next,according to the characteristics of human visual system,a visual model established in the algorithm which could guided embedding the watermark in wavelet coefficients of middle-frequency domain.Watermark extraction is simple and it doesn't need host image or original watermark,and the introduction of the robust regulatory factor coordinated the resistance of the algorithm to various types of attacks.Experiment results show that,the watermark algorithm balances invisibility and robustness preferable,and this algorithm has a stronger robust against those attacks such as cutting,superimposed noise,and so on.