PROCEEDINGS ARTICLE | March 20, 2013
Proc. SPIE. 8768, International Conference on Graphic and Image Processing (ICGIP 2012)
KEYWORDS: Data modeling, Data storage, Computing systems, Computer programming, Geographic information systems, Data processing, Software development, Computer networks, Systems modeling, Information science
Traditional GIS (Geographical Information System) data models are focused on the description of the data
organizational structure and constraints from single aspect, which are the absence or little relevance of the hierarchy and
connotation of data objects. These data models do not match the natural concept of humans about geographical spatial
data and also failed to fully consider the spatial relationships and arithmetic operations with the relationship between
geographic objects. Object-oriented technology mimics the human way of thinking as much as possible, it appears to
overcome the shortcomings of traditional software design methods and improve the stability and reusability of the
software systems. Based on the existing GIS data model, this paper introduces the basic idea of object-oriented GIS data
model combined the object-oriented methods and the vectorial expression of spatial entities, and describes the definition
and implementation of the object-oriented GIS data model. Furthermore, the topological operations between spatial
objects have been defined in the paper for the importance of topological relationships among spatial relationships. The
topological operations are directly defined in geometry classes by means of methods, and they include Touch, Disjoint,
Cross, Contains, Overlaps, and Intersects and so on.
