摘要
介绍了数码城市中室外与室内场景的数据管理及可视化等关键技术 ,对室外与室内场景进行了综合比较 。
The idea of an integrated representation of outdoor and indoor in CyberCity GIS is put forward in this paper. Firstly, the difference between the representation of 3D buildings based on CAD and that based on GIS is introduced. The applications of 3D buildings based on GIS can not only implement some basic 3D GIS functions but also be combined with DEM, DOM and DLG data.Secondly, data management methods for outdoor and indoor scenes are discussed respectively. A pyramid structure for DEM/DOM data management and an R + tree index for 3D vector data management in outdoor scenes are introduced. A subdivision method for floor plans in indoor scenes is discussed. Thirdly, dynamical visualization methods for outdoor and indoor scenes are discussed respectively. The LOD method and the memory paging technique are applied in outdoor scenes. The visibility method is applied in indoor scenes. Fourthly, the indoor is compared with the outdoor from some aspects such as dimensions, amount of data and visualization, fundamental data, objects, editing function, interactive querying function, and statistics function.Lastly, the idea of an integrated representation of outdoor and indoor in CyberCity GIS is summarized from vision, dynamical interactive walkthrough, data organization and management, GIS functions, and data loading.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2003年第3期253-258,共6页
Geomatics and Information Science of Wuhan University
基金
测绘遥感信息工程国家重点实验室开放研究基金资助项目 ( 0 10 30 2 )
关键词
数码城市
三维
一体化
GIS
数据管理
CyberCity
three-dimensional
outdoor
indoor
integrated representation
