基于小波变换和HVS的数字水印算法研究

Research of Digital Watermark Algorithm Based on Wavelet Transform and HVS

以静止彩色图像为研究对象,结合人类视觉系统模型,提出了一种基于离散小波变换的数字水印算法,该算法选择在原始图像小波变换的低频子带嵌入水印,提高了水印的鲁棒性和不可见性,并对所提出的算法进行了性能分析,实验结果表明,该算法对常见的图像攻击具有较强的鲁棒性。

The article puts forward a kind of digital watermark algorithm based on wavelet transform that takes the static color image as research object and combines with human visual system model.This algorithm makes a selection to embed watermark in lowest frequency band of origin image wavelet transform,and it can improve the Robust and invisibility.The experimental result shows that this algorithm has strong Robust to the image attack.