Blind spread spectrum robust watermarking algorithm based on self-adaptation of mixed domains
Xiaohu Ma · Jisuanji gongcheng yu sheji · 2010
Aiming at the problems of digital watermarking based on single domain transformation,a blind spread spectrum robust water-marking algorithm based on DWT and DCT domains is presented.The Y component of color image is decomposed by DWT first,and then some medium and low frequency sub-bands are performed by DCT again so as to reduce the negative effects of transformation based on single domain.The factors of embedding intensity are computed by integrating multi-sensing factors of HVS.At last,the binary image is embedded adaptively after Hamming coded and chaos modulated.The simulation results prove the proposed algorithm has better robustness then those based on single domain.