基于测绘灰度图像的一种数字水印算法  

A Digital Watermarking Algorithm Based on Mapping Gray-scale Images

作　　者：刘亚琦[1] 

机构地区：[1]甘肃工业职业技术学院,甘肃天水741025

出　　处：《矿山测量》2009年第5期26-27,30,共3页Mine Surveying

摘　　要：随着测绘信息化的进一步发展,数字水印成为测绘图像的版权保护的工具。文中基于测绘灰度图像提出了一种改进的邻域方差法的数字水印算法,该方法具有隐蔽性高,抗检测能力强的特点。With the further development of mapping informationization, the digital watermark images are becoming a tool for copyright protection of mapping images. This paper presents an improved digital watermarking algorithm of neighborhood variance based on mapping gray-scale images. This algorithm has a characteristic of high confidentiality and anti-detection.

关 键 词：灰度图像 数字水印 邻域方差法 

分 类 号：P208[天文地球—地图制图学与地理信息工程]