基于信息理论与感官特性的数字水印实现

Implementation of Digital Watermarking Based on Information Theory and Perceptual Characteristics

提出了一种将信息理论和感官特性相结合的数字水印空间实现方法,该方法通过感官特性在图像空间中自适应设置数字水印的相关参数。考虑高斯信道传输时信息理论的容量,系统建立了图像空间和水印空间的影射关系,实现了水印系统应用时的理论容载、鲁棒性和人类感官之间的一种平衡关系。

A spacial digital watermarking approach is presented based on information theory and perceptual characteristics,in which perceptual characteristics are used to adaptively set related parameters of watermarking in the image space. Considering the payload when transmitted in Gaussian Channel according to information theory, the system builds up a mapping relationship between image space and watermarking space,and achieves the trade-off between theoretic capacity,robustness and perceptual distortion.