在数字图像中嵌入多水印的算法研究

Research on Algorithm of Embedding Multi-watermarking in Digital Image

在数字产品中嵌入数字水印是进行数字产品版权保护的一种有力手段。近年来已有多种数字水印设计方案被提出,但是这些水印嵌入方案大多基于一种标志性水印的嵌入。然而在多数实际应用中一种数字水印的嵌入往往不能满足实际需要。在分析单水印方案基础上,提出在数字产品中嵌入多种水印的方案,在不同的数字水印中带有不同的水印信息。分析了多水印嵌入的优点,并设计了两种数字水印的嵌入算法,分析并讨论了两种数字水印的嵌入设计方案。最后用理论与实验分析结果证实了多水印设计方案的有效性和优越性。

Digital watermarking technology is a kind of method to protect digital products.Many different schemes have been proposed.But all of them embedded with single watermarking.However in many applications it needs multi-watermark.This paper analyzes the characteristic of single watermarking,then proposes a kind of multi-watermarking schemes,and analyzes them.The method has been proved effective and superiority by theoretic analysis and experiments.