多功能水印在数字图像版权保护中的应用

数字水印是信息隐藏技术的一个重要分支,是一种全新的数字产品保护技术。多功能水印克服了传统数字水印的不足,将多个功能水印嵌入到载体中,具有版权保护、用户跟踪和内容完整性认证三种功能。本文介绍了多功能水印的基本原理,并对典型的多功能水印算法进行了阐述。最后.分析指出了多功能水印技术的研究现状与发展前景。

Application of the Multi-functional Digital Watermark Technology in Digital Image Copyright Protection

Digital watermarking is an important branch of information hiding and is a new digital work’s protection technology.Multi-functional digital watermarking overcomes drawbacks of the single digital watermarking.It embeds multi-functional watermarks each of into the host,it provided copyright protection,user tracking as well as content authentication,and each function performed well.This paper makes an introduction of the theory of multi-functional digital watermarking,makes discussion and analysis of typical algorithm.Finally,it gives the recent research circs and the prospect of the multi-functional digital watermarking.