一种基于脊波域的扩频水印盲检测方法  

A BLIND DETECTION ALGORITHM OF SPREAD SPECTRUM WATERMARKING BASED ON RIDGELET DOMAIN

作　　者：朱银芳[1] 

机构地区：[1]宜春学院网络与教育技术中心,江西宜春336000

出　　处：《计算机应用与软件》2013年第5期327-330,共4页Computer Applications and Software

摘　　要：针对扩频水印机制提出一种基于脊波域的水印盲检测方法。在提出的水印检测机制中,脊波系数采用广义高斯模型和柯西分布模型进行刻画,结合统计信号检测理论分析了水印的检测性能,并且给出两种模型的参数估计仿真结果。实验结果表明提出的算法具有较好的水印检测性能。A blind watermark detection algorithm is proposed in this paper aiming at the mechanism of spread spectrum watermarking.In the presented watermark detection scheme,the ridgelet coefficients are depicted by generalised Gaussian density（GDD） model and one-parameter Cauchy distribution model.Furthermore,the performance of watermark detection is analysed in combination with statistical signal detection theory,and the simulation results of the parameters estimation on above two models are given as well.Experimental results demonstrate that the presented watermark detecting algorithm has good detection performance.

关 键 词：盲检测 扩频 脊波变换 广义高斯分布模型 柯西分布 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]