多媒体信息安全中的数字水印技术

多媒体及网络技术的不断发展使得我们不得不考虑多媒体信息安全的隐患问题。数字水印技术作为其中版权保护和安全认证的一项重要工具得到了广泛的关注和发展。介绍了数字水印技术背景、基本原理、特点及现状，并给出典型算法的分类和目前存在的问题。

Digital Watermarking Technology in Multimedia Information Security

With the development of multimedia and network technology,we must take it into account about the potential problem of multimedia information security.Digital watermarking technology receives wide attention and development as one of the important tools about copyright protection and security authentication.This paper describes the background basic principle,features and current situation of digital watermarking,and provides the classification of typical algorithm and analyzes the existing problem.