数字水印技术及典型的攻击分析

随着因特网的日益普及，数字多媒体作品在互联网上广泛传播和交流，各种文本、图像、音乐、电影等数字化产品的侵权也更加容易，篡改也更加方便。因此，如何保护作品版权已受到人们的高度重视，数字水印技术作为数字产品版权保护的关键技术已得到广泛的研究和应用。首先对数字水印的特点、系统模型、主要技术等方面进行了探讨，然后分析了几种典型的水印攻击，最后对其发展前景进行了展望。

Digital watermarking techniques and the typical attack analysis of watermarking

With the popularization of Internet and the information communication of the digital media,the copyright of the digital products,including text,image,graphics,audio and video etc.,has become easier and easier to copy and infringe.How to provide the copyright protection and implement covert communication has drawn extensive attention in the recent years.As a main method for covert communication and copyright protection,digital watermarking techniques has been widely studied and applied.First,this paper gives the characters,the processing model and the main techniques of digital watermarking;then,it analyzes several typical attack of watermarking.Finally,it points out possible directions for the further research.