基于小波分析的盲灰度水印算法  

A Blind Grayscale Watermarking Algorithm Based on Wavelet Analysis

作　　者：高光勇[1,2] 吴维勇[1] 彭欣健[3] 尧时茂[1] 

机构地区：[1]九江学院信息科学与技术学院,江西九江332005 [2]南京邮电大学智能与控制技术研究中心,江苏南京210003 [3]九江职业技术学院机械工程系,江西九江332005

出　　处：《郑州大学学报（理学版）》2010年第2期53-56,共4页Journal of Zhengzhou University:Natural Science Edition

基　　金：国家自然科学基金资助项目;编号60863012

摘　　要：针对盲灰度水印算法难以同时满足良好的不可视性和鲁棒性的情况,提出一种新的基于小波分析的盲灰度水印算法.算法利用DWT、DCT的特点及最大均方根值细节子带的较强抗攻击能力,将感知重要的水印信息嵌入到感知重要的宿主图像系数中.实验结果表明,该算法在满足大容量水印信息嵌入的同时,具有较好的不可视性和鲁棒性.Aiming at the situation that the blind grayscale watermarking algorithms can not satisfy good invisibility and robustness simultaneously, a new blind grayscale watermarking algorithm based on wavelet analysis is proposed. The algorithm exploits the features of DWT, DCT and the strong ability against attacks of detailed subband with maximum root mean square （RMS）, and then embeds the perceptually significant watermark information into the host image coefficients which are important on perception. The experimental results show the algorithm has the better invisibility and robustness while it meets the large-capacity data embedding.

关 键 词：灰度水印 小波分析 均方根 盲提取 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]