基于小波变换的数字水印改进算法研究

Digital Watermarking Algorithm Based on Improved Wavelet Transformation

数字水印技术可以隐藏水印信息以达到版权保护的目的。通过对小波变换、离散余弦变换的研究以及鲁棒性攻击特点的分析,结合人类视觉特性,提出了一种结合离散小波变换和离散余弦变换的数字水印算法,并在仿真实验中验证了该算法良好的透明性和鲁棒性。

Digital watermarking technology can hide watermarking information in order to achieve the purpose of copyright protection.Through the analysis of wavelet transform,discrete cosine transform and robustness against characteristics,combining human visual characteristics,finally this paper puts forward a kind of watermarking algorithm which is combination of discrete wavelet transform and discrete cosine transform,and then verifies the good robustness and transparency of this algorithm in the simulation experiment.