信息隐藏技术在地理空间数据安全中的应用

摘要

地理空间数据安全是目前测绘领域急需解决的问题,信息隐藏技术为该问题的解决提供了一条新的思路.阐述信息隐藏的基本概念,讨论它在空间数据安全中两个重要的应用——空间数据水印技术及空间数据隐写技术,研究空间数据隐写技术的实现方法,并对这两种技术的异同进行比较.%The geospatial data security has been the most important problem to be solved in the surveying and mapping field,so the information hiding technique provides a new way out.Firstly,the concept of information hiding is presented,of which two important applications— geospatial data watermark technology and steganography technology are discussed.The realization of the latter technology is studied by compating withthe former technology.