数字水印在信息隐藏中的应用

APPLICATION OF DIGITAL WATERMARKING TO INFORMATION HIDING TECHNIQUE

随着因特网的日益普及,多媒体信息交流达到了前所未有的深度和广度,作品侵权也随之更加容易,篡改也更加方便。因此,如何保护数字产品版权越来越受到人们的高度重视。如今,信息隐藏技术,特别是数字水印技术作为版权保护的重要手段,已得到广泛的应用。本文对数字水印技术进行了较全面的论述,包括数字水印的系统模型、特点、主要应用领域、算法分类以及数字水印可能遭受的攻击。

The digital recording media store various types of digital information, including text, image, graphics, sound etc. Along with the popularization of Internet and the development of multimedia techniques, people can get almost all the information through the Internet. But we have to tackle serious problems of copyright violation,illegal copying,liabilty to forging etc. How to provide copyright protection and implement covert communications have attracted our attention greatly in recent years. Watermarking, as a main method of distinguishing information hiding,has been widely studied and applied. In this paper, an introductory review and an overall discussion about digital watermarking, including system model, feature application fields,algorithm categories and attack upon digital watermarking,are presented.