3D Topological modeling and visualisation for 3D GIS

摘要

Beyond Virtual Reality, 3D Geographcial Information Systems should provide efficient spatial analysis tools able to use all capabilities of the dimension, and a visualization that could operate on the results of queries. To address these issues, this paper presents a fully 3D topological model that was implemented in an object-oriented database management system. That prototype uses a 1:5,000 scale database where the problems of abstraction and symbolisation arise, and allows a set of semantic, geometrical and topological queries. The results can be visualized after several transformations on some objects of the database to make them more significant.