Adaptive image watermarking scheme based on HVS and fuzzy clustering theory

In this paper, we propose a novel digital watermarking scheme in DCT domain based on fuzzy clustering technique and human visual system to adapt the embedding strength of different blocks according to block classification. We choose a binary image as watermark and embed it into the larger coefficients in mid-band frequency of the selected blocks. This method allows to embedding more robust watermark under a certain visual distance. Experimental results show that the proposed scheme can survive common image signal process.