Three-dimensional expression of city construction based on ontology

To overcome the difficulties in the appropriate partition and expression of spatial objects in the existing spatial description of city construction, the describable hierarchy and geometric definition of city construction were analyzed with the help of the basic theory of ontology-part-whole relation. In addition, the relationship between spatial entities was discussed from two aspects of part and whole. Finally, a new three-dimensional description frame of city construction based on ontology was put forward, and the related experiment system was designed by utilizing Visual C++ computer language and OpenGL Performer, a graphical software package.