摘要
数字水印是近几年来出现的数字产品版权保护技术,是当前国际学术界的研究热点。本文对数字水印进行了简要地概述,详细介绍了DCT的基本原理,采用Matlab7.0进行相关仿真实验,论述了基于DCT的数字水印的鲁棒性。
The Digital Watermark is a preservation technology about the digital product copyright which appeared in the last few years, and it's the current international academic circle's research focus. The article provides an overview of the digital watermark, introduces the DCT basic principle in detail, uses Matlab7.0 to carry on the related simulation experiment, and discusses the DCT-based digital watermark robustness.