MATLAB 水印仿真系统讨论摘 要随着 Internet 技术的不断更新和频繁的信息交换，数字产品的传播和交换越来越便捷，已成为我们生活之中必不可少的一部分。但是数字信息的复制却比较简单，数字作品很容易被非法使用和篡改，对作品的带来了严重威胁，同时给作品的拥有者和发行者造成了巨大的经济损失。所以需要一种有效的解决手段来保护数字产品的等问题。数字水印作为一项很有潜力的解决手段，最近几年成为了商业界和学术界共同关注的热点。本文首先介绍了数字水印的讨论背景与意义、国外讨论现状，对数字水印的基本框架和数字水印的分类做了简单介绍，为数字水印算法的提出、实现与测试提供了理论依据。在参阅大量文献后，本文重点对基于 DCT 的数字水印算法进行了MATLAB 仿真，并对水印算法作了主观和客观的评价。最后对抗打印扫描的彩色图像数字水印算法做了粗略的讨论，提出了几项算法的关键技术问题，为今后深化讨论做好铺垫。关键词：水印，DCT，DWT，仿真系统Study of Watermarking Simulation System with MATLABABSTRACTAlong with the frequent update of Internet technology and information exchanging, dissemination and exchanging of digital products more and more convenient, which has become an indispensable part of our everyday life. But the replication of digital information is relatively simple, digital products can easily be used illegally and tampered. All of those are serious threaten to the digital work’s copyright. At the same time, it will cause huge economic losses to the owner and publisher. So we need an effective way toprotect the copyright of digital products. As a potential solution, Digital watermarking has become the common focus of business and academic circles in recent years.This paper introduces the research background and significance of digital watermarking firstly; and also the research status at home and abroad, classification and the basic framework of digital watermarking are introduced, which provide some basis theory for the proposing, implementation ...
