Research of image based watermarking attack algorithms
基于图像的数字水印攻击技术的研究*

Digital watermarking techniques are proposed to meet the urgent requirement.Robustness against attack is the basic demand of digital watermarking.Many algorithms claim to be robust against various transformations,and in order to verify the robustness,lots of attack techniques have been developed.This paper summaried digital image watermark attack algorithms comprehensively and introduced some unresolved problems.Finally,it proposed promising directions.