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《Science of Surveying and Mapping》 2006-01
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The maintenance of spatial relations in map generalization

WU Jing~ ① , CHENG Penggen~ ① , MAO Jianhua~ ② ,CHEN Fei~ ③ (①Department of Surveying, East China Institute of Technology, Fuzhou 344000, China; ②Institute of City and Environment Sciences, Jiangxi Normal University, Nanchang 330027, China; ③School of Economics and Management, Nanchang University, Nanchang 330047, China)  
During map generalization, spatial relation conflicts will be caused by the change of the scale and various generalization operators. Topology relation is the only aspect which is detected and controlled when spatial relation maintains. Because direction relation is the most useful spatial relation in daily life, it is of great importance to effectively maintain spatial relation among objects. By means of qualitative spatial reasoning, the safe region of displacement considering direction relation is established to synthetically detect and control the conflicts and transition of topology and direction relation. The existing problems and future research directions are also discussed.
【Fund】: 国家自然科学基金项目(40401050、40401021)资助
【CateGory Index】: P283
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