Fast Modeling Method for Three-dimensional entity of mass underground spatial data
Three-dimensional entity model is the base of visualization and application of true 3D GIS. Nowadays, digital terrain model of aboveground spatial data with various scales and resolutions is much more convenient in building digital city. However, it is difficult to build efficiently 3D body model based on huge amount of underground spatial data that is unstructured and very complicated. This paper gives an efficient and quick modeling method with three layers to deal with mass underground spatial data. The related key issues include: (1) 3D underground body model considering their geometrical, topological and semantic relationship. (2) Efficient underground spatial body index to support dynamic dispatch of 3D complicated magnanimity data. (3) Technology of genetic algorithm and expert system introduced to make the processing of building 3D geological entity model more intelligently and accord with geologists’ idea. (4) Parallel modeling by divisions of cities according to geological rules and regulations. To utilization of cities’ underground space, the 3D body modeling method for mass underground spatial data provides a new way for great amount of 3D geological data, 3D engineering data, and so much as true 3D GIS spatial data.
3D GIS:mass spatial data:3D visualization modeling:geospatial information technology
Zhengping Weng Zhenwen He Chonglong Wu
Faculty of Computer Sciences China University of Geosciences Wuhan,China State Key Laboratory of Geological Processes and mineral Resources China University of Geosciences W
国际会议
The 18th International Conference on Geoinformatics(第18届国际地理信息科学与技术大会 Geoinformatics 2010)
北京
英文
471-474
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）