An adaptive image watermarking algorithm based on perceptual model
Dengyin Zhang, Jiaping Chen, Adi Anani, Haibo Li · KTH Publication Database DiVA (KTH Royal Institute of Technology) · 2008
An adaptive image watermarking algorithm based on Watson’s perceptual model is proposed in this paper. The proposed watermarking algorithm fully considers image regional characteristic. First, the cover image is divided into different smooth regions according to its gray value. Then watermark adjustment factors of those different regions are calculated respectively based on Watson’s perceptual model. The watermark is embedded by the adjustment factors at last. Experiments show that the proposed algorithm has excellent imperceptibility and has little influence upon the eigenvalue of the cover image.