The core of the 3d reconstruction of the city landscape modeling, including the landform modeling and geographicalobject modeling.
而城市三维景观重建的核心内容是景观模型的建立，其中包括地貌模型、地物模型的建立。
2
Compared with several other data models used in early and recent GIS, the author gives his own idea of what is a geographical space, and then puts forward a new object-oriented conceptual data model.
A geo-spatial entity which can be organized from geometric data, symbol data, entity data, attribute data is regarded as an object to the object oriented geographical information model.