KEYWORDS: 3D modeling, Data modeling, Visual process modeling, Visualization, Buildings, Geographic information systems, Process modeling, Dubnium, 3D vision, Computing systems
In order to settle the conflict of the visualization efficiency and the great amount data in digital city in 3d GIS system, the
author put forward a 3D data model with LOD ability especially for the complex 3d object such as buildings in 3d city GIS
system. In this paper, the author described the components of the complex 3d object, then explained that we can settle the
conflict mentioned above by designing a new model that has the capability of describing levels of details. The author
expound the basic theory of the model with LOD ability related with the vision point, and then defined several key
conceptions, at same time, the author analyzed the principles and the visualization process of the model in 3d space. In the
end of the paper, the author verified data model through an experiment, the results of the experiment showed that the model
put forward is effective and high efficiency.
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