3S与遥感影像理解专家系统设计

从当代遥感技术发展的特点和3S集成系统用于空间对地观测促进社会可持续发展对遥感分析软件的自动化和准确性的需要-这一遥感技术发展过程中的时代背景出发,对研制适合当代遥感技术及相关领域发展特点的遥感影像理解专家系统所涉及的关键性内容进行了系统、深入的探讨,并从实用性角度提出了这种专家系统所具备的特点。

3S and Remote Sensing Image Understanding Expert System Designing

From the contemporary developments of remote sensing and 3S(GPS,GIS and RS)integrated system,this paper introduces some main techniques in remote sensing image understanding field,they are:(1) ground analysis,including analysis of geographical elements in a certain area,relationships between them and their integration in aspects of spatial distribution features and temporal changes;(2) knowledge acquisition,which lays special stress on knowledge acquisition from GIS Database;(3) credence research,including the determination of the elementary unit for image understanding and utilization of various data.Accordingly,it discusses image segmentation and data fusion respectively;(4) analysis of knowledge base building,including tradeoff making between generality and practicality in building knowledge base;(5) integration of RS and GIS,which specially discusses the soft interface between RS and GIS.For designing this kind of expert system,some key ideas such as integration of GPS,GIS and RS,formation of knowledge base system,application model building etc.are also discussed in this paper.