A blind watermarking algorithm based on wavelet lifting transform

This paper proposes a blind watermarking algorithm based on wavelet lifting transform and human visual system (HVS). Firstly, the watermark sequence is encrypted by pseudo-random sequence. Then we design a reference template of embedding watermarking according to the high frequency coefficient of image multi-resolution, digital watermark is embedded into the low frequency domain by the reference template mapping the low frequency coefficient of image multi-resolution. Finally, the watermarking is completely extracted from the low frequency domain without the original image. The experimental results show that the novel algorithm is feasible in the copyright protection.