摘要
以矿山地质为背景，深入分析三维空间信息系统所涉及到的空间对象以及它们之间的联系，提出了几种新的空间对象类型。探讨用矢量与栅格混合的数据结构，以及面向对象的数据模型来表达各类三维空间对象。
Usually current GIS can only deal with 2 D or 2.5 D information on the Earth's surface.A new 3 D data structure and data model need to be designed for the 3 D GIS.This paper analyzes diverse 3 D spatial phenomena from mine and geology and their complicated relations,proposes several new kinds of spatial objects including cross section,column body and digital surface model to represent some special spatial phenomena like tunnels and irregular surfaces of ore body.An integrated data structure including vector and raster data and object oriented data model is used to represent various 3 D spatial objects and their relations.The integrated data structure and object oriented data model can be as a fundament to design and realize a three dimensional geographic information system.
出处
《武汉测绘科技大学学报》
CSCD
1997年第1期7-15,共9页
Geomatics and Information Science of Wuhan University
基金
国家杰出青年科学基金
关键词
面向对象
数据模型
矢量
栅格
GIS
矿山地质
D geographic information system
object oriented
data model
vector
raster
