摘要
该文系统介绍了数字水印的原理和应用方法，并研究了一种基于离散余弦变换（DCT）的数字图像水印算法，并借助MATLAB编程工具，实现数字水印的嵌入、提取和攻击测试。
This paper introduces the principle methods and applications of digital watermarking and give an watermarking algorithm of the digital image which based on discrete cosine transform （DCT）. With matlab programming tools, this algorithm has realized the digital watermark embedding, extraction and attack test.
作者
高玉娜
杨忠根
GAO Yu-na,YANG Zhong-gen （Information Engineering Institute of Shanghai Maritime University,Shanghai 200135,China）
出处
《电脑知识与技术》
2009年第2期868-870,876,共4页
Computer Knowledge and Technology
