数字水印关联性模型及其概率分析  

Relation Model of Digital Watermarking and Probability Analysis

作　　者：李庆诚[1] 李维仙[1] 

机构地区：[1]南开大学信息技术学院嵌入式系统与信息安全实验室,天津300071

出　　处：《计算机工程与应用》2005年第16期143-145,164,共4页Computer Engineering and Applications

摘　　要：随着计算机网络多媒体系统的发展,越来越多的数字作品与信息需要通过互联网进行传播,同时,在这种数字化信息传播模式下的版权保护也显得越发迫在眉睫。数字水印技术正是基于这种需求被提出,并在近几年成为信息安全技术的研究热点。文章首先分析了数字水印作品在传播过程中的关联模型,然后在关联模型的基础上,把数学理论的概率论思想应用到数字水印系统的嵌入和检测算法中,增加了数字水印系统的稳定性和可靠性。同时,也把数字水印理论提高到一个新的高度。More and more digital works and information needed transmitting through a net circumstance with the development of computer multimedia system.Meanwhile,the copyright protection of these works is becoming more and more urgent in digital information transmitting mode.The Technology of Digital Watermarking is just brought forward basing on this demand and is becoming the studying focus of information security technology in years.This thesis would firstly analyze Relation Model during the transmitting process of digital watermarking,then on the base of Relation Model,it applies the probability idea in mathematical principles to the digital watermark embedment and detection algorithms,thus enhances the stability and reliability of the digital watermark system.At the same time,it also raises the digital watermark theory to a new standard.

关 键 词：数字水印 相关系数 关联性 概率分析 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]