Digital Watermarking Scheme Based on Chaotic Encryption and DWT

A novel watermarking scheme based on chaotic encryption in DWT domain is proposed. The original image is transformed into some sub-band coefficients using discrete wavelet transformation, the logistic chaotic sequences is utilized to scramble the watermark before it is embedded. Taking into account the characteristics of human visual system (HVS), the watermark is embedded into the important sub-band coefficients. Because of the multi-resolution decomposition for DWT and meaningful HVS, the proposed scheme can achieve good robustness, the experimental results show that the watermark is robust against the cut attack, JPEG and et al.