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《Developments In Surveying and Mapping》 2002-03
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Research on Formal Description of Directional Relation Based on Voronoi Diagram(Ⅱ)

YAN Hao-wen ①②③ ,GUO-Ren-zhong ②③ (①Lanzhou Railway University,Lanzhou 730070,China;②Wuhan University,Wuhan 430079,China;③Shenzhen Urban Planning and Land Information Centre,Shenzhen 518031,China)  
This paper presents the establishment of formal model of directional relations based on Voronoi diagram and Delaunay triangulation detailedly.The paper describes the logical structure of the model and the process of direction calculation.To demonstrate the correctness,some calculation examples are given,and the advantages and disadvantages are discussed at the end.
【CateGory Index】: P208
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1 YANG Yong-qing1,FENG Jun2,WANG Zhi-jian2(1.Key Laboratory of Coastal Disaster and Defence of Ministry of Education,Hohai University,Nanjing 210098,China;2.College of Computer and Information Engineering,Hohai University,Nanjing 210098,China);Reasoning and calculation of spatial direction relationship between complex objects based on Voronoi diagram[J];Journal of Hohai University(Natural Sciences);2008-03
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3 YAN Hao-wen ①②③,GUO Ren-zhong ②③(①Lanzhou Railway University,Lanzhou 730070,China;②Wuhan University ,Wuhan 430079,China;③Shenzhen Urban Planning and Land Information Centre, Shenzhen 518031,China);Research on Formal Description of Directional Relation Based on Voronoi Diagram[J];Developments In Surveying and Mapping;2002-01
4 ZHU Wei,MA Jin-song(Geography and Ocean College of Nanjing University,Nanjing 210093,China);Algorithm of improving neighborhood relation processing using neighborhood index[J];Science of Surveying and Mapping;2008-03
5 LIU Wen bao 1,2 ,DENG Min 1,XIA Zong guo 2,3 (1.Department of Geosciences, Shandong University of Science and Technology, Taian, Shandong, 271019; 2. Department of Earth & Geographic Sciences, University of Massachusetts at Boston, Boston, MA;Analysis of Uncertainties of Attributes in Vector GIS[J];ACTA GEODAETICA ET CARTOGRAPHIC SINICA;2000-01
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8 YAN Hao wen 1, GUO Ren zhong 2 (1. Lanzhou Railway University,Lanzhou 730070,China; 2.Shenzhen Municipal Planning and Land Bureau, Shenzhen 518031,China);On Fundamental Problems of Directional Relationships[J];Acta Geodaetica Et Cartographic Sinica;2002-04
9 YAN Hao wen 1,2,3 , GUO Ren zhong 2,3 (1. Lanzhou Railway University,Lanzhou 730070,China; 2.Wuhan University, Wuhan 430079,China; 3.Shenzhen Urban Planning and Land Information Center, Shenzhen 518031,China);Research on Formal Description Model of Directional Relationships[J];Acta Geodaetica Et Cartographic Sinica;2003-01
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