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《Computer Engineering》 2007-22
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Novel Strategy for Maintaining Intersection Relation Among Spatial Entities in Map Simplification

LUO Ying-wei1,2,WANG Xiao-lin1,2,YU Li-shan1,LIANG Bin2,WANG Yi-xin2,XU Zhuo-qun1(1.Department of Computer Science and Technology,Beijing University,Beijing 100871;2.School of Information Science and Technology,Shihezi University,Shihezi 832003)  
A novel strategy is presented to solve the consistency problem of maintaining intersection relation among spatial entities in map simplification.In this strategy,a new data structure is designed to express the intersection relation between two entities,and a new mechanism is adopted to record the evolvement of intersection relation during entity simplifying.Also,four conflict levels of the intersection relation are defined for map simplification,so users can select different levels to control the displacement of the point of intersection.The strategy can keep a high visual effect after simplification,and is suitable to map simplification for mobile device.
【Fund】: 国家“973”计划基金资助项目(2006CB701306);; 新疆生产建设兵团博士资金资助项目
【CateGory Index】: P283
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