Public watermarking of color image based on modulating block average
Degui Xiao · Computer Engineering and Applications Journal · 2007
To solve those problems that are embedding watermark into color image,the low robustness of special watermark and the design of public watermark,this paper proposes a special public watermarking of color image.Watermarks are embedded into the blue channels of pixels.Through modulating the distribution of block average over a mapping range,a new stable image character is built,watermarks are embedded and blind-detect is implemented.The max precision of modulating range and the influence of mapping range length on algorithm robustness is discussed.Experimental results show that the proposed technique has good robustness to common image processing operators.