Mobile Agent Based Digital Watermark Detection

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.