A new watermarking method based on chaotic maps

This paper presents a new digital watermarking method based on chaotic maps. Different from most of the existing chaotic watermarking methods, two chaotic maps are incorporated into the watermarking system to resolve the finite word length effect and to improve the system´s resistance to attacks. One map is used for watermark generation, another as the private key. Simulation results show that the proposed digital watermarking system is feasible and robust to common signal processing procedures. In addition, it performs better than existing watermarking schemes and exhibits better protection than watermarking systems using only one chaotic map