doi:

DOI: 10.3724/SP.J.1047.2013.00895

Journal of Geo-information Science (地球信息科学学报) 2013/15:6 PP.895-901

The Fast Modeling Service of Virtual High-speed Railway Scene


Abstract:
The high-speed railway technology has been growing rapidly in China. At the end of December 2012, the mileage of the high-speed railway in China had been nearly 9356 kilometers. China has become the country which has the scale biggest of high-speed railway mileage in the world. Simulation of general coupling system of high-speed railway is a highly complex dynamic process. Different domain objects have complex and dynamic relations, which are uncertainty and randomness. Thus, it is very important that these simulation data are implemented analysis, reorganization and visualization in a virtual geographical environment. Based on the special spatial features and the relationship attributes of high speed railway environment, this paper proposed a modeling method to meet the higher requirements of the visualization and management of high-speed railways. Some key problems including the creating of the primitive model base, the design of the ontology knowledge base and spatial semantic constraint rules were addressed in detail to develop a modeling service system and related plug-ins, which can provide fast modeling service for virtual high speed railway. Finally, a prototype system was implemented for modeling experiments on a case study region. The experimental results show that the proposed method in this paper can efficiently clarify various relations of scenes object entities, separate the domain knowledge from the modeling operation, and reduce the complexity and difficulty of the multidisciplinary collaborative modeling. It can support fast organization and modeling of virtual high-speed railway scene.

Key words:virtual geographic environment,high-speed railway,modeling service,spatial semantic

ReleaseDate:2015-04-17 13:34:33



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