Color image watermark based on DWT and Tucker decomposition
Wang Dong-fang · Jisuanji yingyong yanjiu · 2010
This paper proposed a new color image watermarking algorithm based on DWT and Tucker decomposition.Applied DWT to R,G,B channel correspondingly,and used three low frequent coefficients to construct a 3-level tensor.Embedding the watermark into the core tensor,which got form Tucker decomposition,could diffuse the watermark into R,G,B.The experiment results indicate that this algorithm is robust to compress,noise,filter and geometric distortion.And the algorithm is better than the only Tucker based color image algorithm in a certain extent.