Semantic graph construction for 3D geospatial data of multi-versions

3D geospatial data holds rich information that causing significant tough workload in 3D geospatial semantic building. In order to avoid those difficulties in building high precise semantic, this paper focuses on creating a semantic graph for 3D geospatial data via the novel approach called semantic graph. Firstly, all data related to geo-spatial are organized through semantic conceptualization processing. Its result is divided into conceptual description and formal pattern involving all features belong to certain 3D object or scene. Then from perspective of spatial, thematic and temporal domains, multi-versions semantic relations are created depend on relational rules and semantic mapping mechanism. On the basic of semantic conceptualization processing, all conceptual and formal patterns are controlled as semantic integrated result. Since the result covers spatial, thematic and temporal semantic information of 3D geospatial field, approach proposed by this paper can generate 3D geospatial data semantic graph based on semantic conceptualization and accomplish the transform from 3D geospatial data to 3D geospatial semantic effectively.