A WAVELET DOMAIN WATERMARK METHOD BASED ON FRACTAL CODE

This paper presents a watermarking algorithm based on fractal coding and wavelet transform. In this method, we adopt images which are self-similar to search for its Iterated Function System(IFS) as the watermark information, considering the robust against geometric transformations of fractal code. A chaos system is utilized to control the position of watermark embedded in the DWT domain, and then append the IFS coefficients to the wavelet decomposition coefficients. The approach proves rather efficient against many kinds of distortions.