Contourlet-based image watermarking algorithm combined with HVS

A watermarking algorithm in contourlet domain is proposed. Firstly, the image is decomposed into several subbands. Secondly, according to the luminance and texture characteristics of the HVS, the watermark composed of a pseudorandom sequence is adaptively embedded into the subband with the largest energy. Finally, the inverse transform is performed to obtain the watermarked image. The blind detection is used, and the algorithm can achieve a good imperceptibility. Experimental results show that the algorithm has good robustness against attacks such as JPEG, noise and crop.