基于DWT数字图像水印技术研究  

A Digital Watermarking Algorithm Based on DWT

作　　者：吴翩卉[1] 王春枝[1] 

机构地区：[1]湖北工业大学,湖北武汉430068

出　　处：《电脑与电信》2012年第5期29-30,39,共3页Computer & Telecommunication

摘　　要：提出一种改进DWT的数字水印算法。它以水印信号的强度低于人类视觉的特点,通过对信号的调整,在不改变视觉的效果下嵌入另一个图像;并用MATLAB和实验数据去验证,得到鲁棒性强、安全性高的数字水印图像。This paper introduces an algorithm of digital watermarking based on Discrete Wavelet Transform （DWT）. According to the strength of watermark signal lower than the characteristics of human vision, the watermarking image is embedded in another image by adjusting the signal which is an invisible digital watermarking. This method will be further illustrated by the example of watermarking system that is developed in Matlab, which obtains watermarking image of good robustness and security.

关 键 词：数字水印 离散小波变换(DWT) 高频区 鲁棒性 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]