Perceptually based waterfilling for watermarking

Presents a common ground between information theoretic and perceptually based approaches to watermarking. A perceptually based iterative waterfilling algorithm that achieves information theoretic watermarking capacity within perceptual distortion constraints is proposed. Image watermarking is considered for experimental analysis. Experimental results are presented to explain how the proposed algorithm achieves a trade-off between information theoretic capacity, robustness and perceptual distortion. Some general observations about the visual quality of an image and its information theoretic capacity are also made