期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2000
卷号：XXXIII Part B4 (/1-3)
页码：546-550
出版社：Copernicus Publications
摘要：To provide 3D GIS data on the Internet, 3D GIS java engine and java3D-VRML connectivity methods are required. 3D data structures are researched and applied for spatial analysis for subsurface modeling. There are two models use in this research, a surface model and an octree model. The surface model is mainly used for visualization, while the octree model is used for spatial operations due to its efficient Boolean operations. In the surface model, functions such as datum, special layer selection, attribute queries and various cutting functions are available The Virtual Reality Modeling Language (VRML) is a standard language for describing interactive 3-D objects and worlds delivered across the Internet. It is a language for description of interactive simulations - virtual worlds connected via Internet and World Wide Web. It allows creating a description of a virtual world, save this description to a file and display virtual world in one of WWW browsers. This study shows the method of providing 3D GIS on the Internet using VRML model, which consist of DEM data, Draped Aerial Photo, and Java3D API programming. And it is also studied that offering 3D GIS engine on the internet and precise texture mapping using satellite image and aerial photos
