A self-adaptive blind detection color watermarking algorithm based on wavelet contrast

This paper proposes a blind detection color watermarking algorithm based on self-adaptation of the horizontal/vertical wavelet contrast and HVS speciality to calculate embedding intensity factor. It mainly includes self-adaptation calculation of embedding intensity factor on the basis of the horizontal/vertical wavelet contrast of the carrier color image and HVS speciality; color watermarking embedding and blind extracting algorithm. The algorithm of this paper is achieved in the platform of Matlab7.0, with non-attack experiment and attack experiment. The experimental result shows that the algorithm in this paper has stronger transparency and robustness in the case of non-attack and has better robustness in the case of general attack and so on.