摘要
虚拟地理环境是一种新的地理学语言,城市虚拟地理环境是虚拟地理环境在城市中的应用。以遥感影像为数据源,通过TIN(Triangulated Irregular Network)模型和CSG(Constructive Solid Geometry)模型集成生成城市虚拟地理环境,采用TIN模型描述地形,CSG模型描述建筑物,通过提取建筑物地面轮廓作为TIN模型的限定约束条件,构建城市虚拟地理环境的三维景观,实现城市三维空间信息的共享。
Virtual geographic environments is a new geographic language;city virtual geographic environments is the application of virtual geographic environments in the city.Using remote sensing image as the data resource,the city virtual geographic environment is generated by integrating the TIN model and CSG model.In it the TIN model builds the topography and the CSG model builds the constructions.The ground contours of constructions are extracted as the limit constraints of TIN model,through this the 3D landscape of city virtual geographic environments is set up,and the share of 3D space information of city is realised.
出处
《计算机应用与软件》
CSCD
2011年第5期91-93,共3页
Computer Applications and Software
基金
国家科技支撑项目(2007DAH121301)
关键词
城市虚拟地理环境
TIN
CSG
信息共享
City virtual geographic environments TIN CSG Information sharing
