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《Geography and Geo-Information Science》 2009-03
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A Building Polygon Generalization Algorithm under the Road Constraint

WU Liang1,XIE Zhong1,YE Zi1,2 (1.College of Information Engineering,China University of Geosciences,Wuhan 430074;2.GIS Software Research and Application Engineering Center,Ministry of Education,Wuhan 430074,China)  
The building polygon generalization under the road constraint is a challenging problem in the map generalization.In this paper,the automatic generalization algorithm of building polygon in GIS environment was discussed.The main research focused on the road skeletons extraction,the rectangular adjustment of building polygon,the partial concave/convex simplification of the large area polygon,partial exaggeration of the small area polygon and polygon cluster aggregation.In the practical development,the different building polygon was classified by its shape and characteristic,and it was simplified with different methods.The experiment proves that the building polygon simplification receives a reasonable result through this algorithm and the shape characteristic of block has been well preserved.
【Fund】: 国家自然科学基金项目(40771165);; “十一五”国家支撑计划项目“城市空间信息基础设施共享关键技术研究与示范”(2006BAJ15B02)
【CateGory Index】: P208;P28
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