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《Science of Surveying and Mapping》 2016-01
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Updating algorithm of polygon vector data on topological graph model

CHONG Suwen;WANG Qing;WANG Huiqing;School of Integrated Circuit,Southeast University;School of Instrument Science and Engineering,Southeast University;  
In order to improve the updating efficiency of land use maps,the paper proposed an algorithm of updating polygon vector data on planar topological graph model:the data structure of planar topological graph was used to realize the line intersection operation of polygon geometry objects,and the geometric clipping within coincidence points or coincidence edges was solved;through the topological relationship estimation of the vector base map and the change vectors,the changes occurred in the vector base map were detected,and the number of geometric operation was reduced,which improved the updating efficiency of the vectors.Experimental result showed that the method could have good feasibility.
【Fund】: 国土资源公益性行业科研专项(201211023)
【CateGory Index】: P208
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【Citations】
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