基于水印能量与人类视觉系统的自适应公开水印算法  

Algorithm of adaptive public watermarking based on HVS and watermarking energy

作　　者：郭越[1] 程景云[1] 

机构地区：[1]上海海事大学信息工程学院,上海200135

出　　处：《上海海事大学学报》2005年第1期63-68,共6页Journal of Shanghai Maritime University

摘　　要：提出一种基于人类视觉系统 (HVS)与水印能量的数字水印算法,该算法首先考虑在图像小波域的重要系数中嵌入水印,结合用户所选择的PNSR值和视觉掩盖特征值来确定最佳嵌入强度,然后通过改进DeepaKundur的量化分段嵌入思想嵌入水印。试验证明该算法具有很好的不可见性,对一些常见的图像处理具有较高的鲁棒性,因此具有较好的实用性。An embedded-coding watermarking algorism based on human vision system (HVS) and watermarking energy is presented. This algorism embeds watermark in key coefficients of wavelet domain of images, and it provides the mechanism of embedding the optimal intensity of watermark for users according to the PNSR and visual-masking eigenvalue given by users. The paper also employs and improves. The idea of quantities subsection embedding in the implementation of embedding watermark. Experiments results show that the method offers fine invisibility and robustness in image processing. Its potential application promises well.

关 键 词：人类视觉系统 能量 自适应 数字水印算法 嵌入水印 视觉掩盖 不可见性 图像处理 小波域 特征值 PNS 鲁棒性 实用性 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TP273.2[自动化与计算机技术—计算机科学与技术]