数字水印的鲁棒性分析与研究  

Analysis and study of robustness of digital watermarking

作　　者：袁占亭[1] 张秋余[1] 陈宁[1] 

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050

出　　处：《计算机工程与设计》2005年第3期614-616,共3页Computer Engineering and Design

基　　金：甘肃省科技攻关基金项目(2GS033-A52-020)

摘　　要：讨论了数字图像水印系统的基本框架,简要介绍了系统各个组成部分所完成的功能。详细阐述了数字水印鲁棒性的概念、影响鲁棒性的因素、实现鲁棒性的策略以及鲁棒性评估的描述方法,并说明了鲁棒性在水印系统中的重要地位。最后基于盲检测器水印模型提出了一种估计水印鲁棒性的算法,并给出了算法的描述。由于该算法与扩频技术具有相同的理论依据并且计算过程比较简单,因此在理论上是合理有效的。Thebasicframeofdigitalimagewatermarkingsystemisdiscussed, andthefunctionsofeverypartinthewatermarkingsystem is introduced briefly. The concept of the robustness, the factors affecting the robustness, the strategies used to realize the robustness and the methods evaluating the robustness are set forth at length and the importance of robustness in digital watermarking system is ex- plained. Finally, an arithmetic used to estimate the robustness of digital image watermarking system is put forward, which is based on the watermarking model withblind detector. And the descriptionof the arithmetic is given. Because thisarithmetic has the same academic gist with spread-spectrum technique and has easy computing process, it is reasonable and effective theoretically.

关 键 词：鲁棒性分析 数字水印 算法 数字图像水印 系统 盲检测 描述方法 扩频技术 功能 估计 

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