一种基于双正交小波分解的自适应数字水印技术

An Adaptive Digital Watermarking Technology Based on Biorthogonal Wavelet Decomposition

提出了一种基于小波域上的自适应图像水印嵌入方法 ,它根据各小波子带的噪声敏感度和视觉掩盖特性 ,将基于 Legendre序列的伪噪声水印添加到图像各小波子带的特定数据上 .实验结果表明 ,本水印具有很好的不可见性 ,并且对图像压缩和噪声干扰具有比

A newly adaptive image watermarking based on wavelet transform was introduced. A Legendre sequence random watermark is embedded to the selected coefficients according to the level of decomposition. And level based visual masking is also employed. The experimental results show that the proposed watermark is invisible and robust against common image lossy compression and noise.