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基于移动agent的数字水印检测

Mobile Agent Based Digital Watermark Detection

【作者】 王峰

【导师】 朱跃龙;

【作者基本信息】 河海大学 , 计算机应用技术, 2004, 硕士

【摘要】 数字水印技术是智能版权保护领域的一个研究热点,数字水印与原始数据紧密结合并隐藏其中,成为源数据不可分离的一部分。数字水印的有效性依赖于从非法拷贝中所提取的证据。 而在一个像国际互联网这样的大规模计算机网络中,信息分布在数百万台主机上,在这样的网络中如何检测水印,是一个极富挑战性的任务。本文对现有的几种解决办法进行了详细的研究分析和比较后,采取了把数字水印技术和移动Agent技术结合起来的方案。该方法最早由J.Zhao等人提出,本文在其基础上提出一种更详细的改进的系统结构,将系统分解为几个功能相对独立的模块,明确描述了各模块要实现的功能,并把移动Agent平台从系统中剥离出来,不必构建一个专用的水印agent平台,使系统更易于实现;整个系统采取消息驱动模式,使整个系统更易于扩充。 为了方便系统的实现,本文专门讨论了移动Agent数字水印检测系统对数字水印算法的新要求,并给出其中关键算法(盲水印算法、置乱加密算法等)的实现。最后,本文在IBM AGLET移动Agent平台上,实现了一个简单的移动Agent数字水印检测系统。实验结果表明,该系统可以有效地完成大规模网络上的数字水印检测任务。

【Abstract】 Digital watermarking has emerged as a promising technology for intellectual property rights protection. A digital watermark is integrated with the multimedia and tightly bound with the. quality of the content. The effectiveness of digital watermarks relies on the evidence extracted from the watermarks that reveal illicit copying and dissemination of stolen digital documents.On a large computer network such as the Internet with millions of hosts, searching watermarks from the data distributed over the network is a challenging task. After studied and compared several method, we concluded that it is an effective method to detect watermark base on mobile agent. In this dissertation, we ameliorate the method proposed by J.Zhan in 1999, divide the system into several independent block, and separate the mobile agent platform from the whole system, this make it is easier to implement the system. Message dirver mode make system easy to extend.In this dissertation, we discuss the new require for the new system in particular, implement the key algorithm (blind watermarking > Scrambling Algorithm) of the system. In the end of dissertation, we implement a simple but integrated system to detect watermark base on aglet(IBM’s mobile agent platform). Experimental results show that this system is can achieve the task to detect watermark on large computer network effectively.

  • 【网络出版投稿人】 河海大学
  • 【网络出版年期】2004年 03期
  • 【分类号】TP309
  • 【被引频次】2
  • 【下载频次】144
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