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- W594877341 abstract "For the purpose of integrated management and public application of 3Dmodels under heterogeneous condition, this paper proposes a conceptual description of unified 3D city models and analysis of common requirements. Based on the application characteristics of 3DCM, three different categories can be defined. Based on the cognitive theory, spatial phenomenon is classified into two types: feature entity and Fields. The point object, curve object, surface object, volume object, group object,LOD object, DEM and Texture object are then employed as the eight basic objects to describe urban spatial entities. The conceptual models can describe arbitrary complex objects with different levels of detail including raster objects, vector objects,continuous surface and discrete features. To ensure spatial consistency between 3D models at different scales,three special level-detail-of-relations between features and their geometry are defined as simple aggregation, hierarchy aggregation and hybrid hierarchy aggregation. The abstract model of 3D city is compatible with OGC specification, and is more easier to be extended to various cases. It provheoretical proof for automatic data under standing and analysis." @default.
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- W594877341 date "2007-01-01" @default.
- W594877341 modified "2023-09-26" @default.
- W594877341 title "Unified representation of3D city models" @default.
- W594877341 hasPublicationYear "2007" @default.
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