Visualization Analysis Based On Cell Complex for 3d GIS
As the theory and application requirement of 3d GIS are developing dramatically,3D geological simulation is not only limited in the capability of visualizing spatial objects,and it has a deeper demand on three dimensions spatial analysis for geographic objects or phenomenon.Therefore,a lot of visualized analysis functions for practical projects are proposed by researchers.However,these researches usually come up with corresponding algorithms based on certain data model or data structure which is without a powerful portability.And the algorithms are often limited to specific requirement which has little expansibility.To solve this problem,a new 3D GIS data model for 3D geological simulation is advanced based on cell complex theory and correlative research results in the field of non-manifold geometric modeling.And a series of 3D set operators are defined to carry out virtual drilling,virtual cutting,virtual digging and virtual tunnel excavation analysis and so on.Compared with existing implementations,the new presented 3D GIS data model unifies the expression of wire frame,facial and volumetric model,which ensures the portability of algorithm.Set operators based on non-manifold geometric modeling possessing mathematical completeness have the ability to implement arbitrary geometric object operation,which can insure the expansibility of the algorithm.
3D geological simulation 3D interactive analysis 3D spatial data model cell complex set operation
Zhou liangchen Lu guonian Sheng yehua Xu hongbo Wang yongzhi Zhou jieyu
Key Lab of Virtual Geographic Environment,MOE,Nanjing Normal University,1＃,Wenyuan Road,Nanjing,Jiangsu Province,P R China,210046
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）