An improved watermarking method based on double random phase encodingtechnique

摘要

An improved watermarking method, based on the double random phase encoding technique and thecascaded-phases iterative algorithm and random-phase-shift algorithm, is proposed. This method cansignificantly reduce the needs of watermarking information storage for different multimedia products,and provide a reasonable criterion of determining the authenticity of a product for the copyright owner.This method can also be applied to track the source of copies. The effectiveness of this method wasverified through numerical simulations.