矢量地图数据数字水印技术综述

矢量地图数据在网络环境下的共享机制,给各个领域都带来了极大的便利,但是其安全和版权保护问题也日益突出。数字水印技术作为版权保护的一种有效方法,成为人们关注的一个焦点。本文分析了矢量地图数据自身特点和常见处理方式;从建立映射关系、构造嵌入域、嵌入方式等3个步骤对空间域水印算法进行了详细分析,分析每种算法的优缺点,为下一步水印算法提供指导;对频率域水印算法进行了研究,并指出了频率域水印算法存在的问题;指出了矢量地图数据水印进一步的研究方向。

The Survey of Digital Watermarking Technology for the Vector Map Data

Sharing mechanism of the vector map data gives all fields a big advantage in network environment , at the same time , secur-ity and copyright protection of the vector map data are increasingly prominent .Watermarking technology is an effective way to protect the copyright and is catching people ’s attention.The paper gives some details about the character of the vector map data and common way of the data processing; detailed analyzing spatial domain methods in mapping relationship , embedding domain , and embedding mode , and guiding to design new algorithm;working over transform domain methods , and indicating the problem of them;Pointing out the direction for following research ..