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《地球空间信息科学学报(英文版)》 2009-02
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Constraints on the Distortion of Area Objects in the Process of Map Objects Displacement

MAO Jianhua Research Center of Remote Sensing and Spatial Information Science, School of Communication and Information Engineering, Shanghai University ZENG Qihong LIU Xuefeng  
The displacement operator is an important and still a hot topic in map generalization. In the generalization product, symbols must be unambiguous and easily perceived and readily understood, which makes space competition among features an important obstacle in the process of map objects displacement. Space conflict between objects, through propagation process, may be spread and more objects may drift into it. In order to maintain symbols equilibrium and spatial relationship between objects, some unimportant symbols or parts of symbols should be distorted under constraints according to visual graphic resolution thresholds to figure out space competition among map features. Three constraints including position, legibility and characteristics are important for the maintenance of symbols equilibrium and spatial relationship, which are discussed in this paper. The skeleton is introduced to represent area objects figure characteristic, in which an area object can be separated to parts hierarchically according to their importance in the construction. Then, the finite element method is applied to the map objects’ displacement and distortion, in which a strategy for the parameters of finite element method is discussed.
【Fund】: Supported by the National Science Foundation of China (No40401050);; the Leading Academic Discipline Project of Shanghai Educational Committee(NoJ50104);; the Science Foundation of Shanghai Education Department (07ZZ09)
【CateGory Index】: P283
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【Co-citations】
Chinese Journal Full-text Database 5 Hits
1 JIAO Jian①②,ZHANG Zhao-yong①,ZENG Qi-ming①②,ZHU Yang-bo①,ZHANG Shu-yi③(①Institute of Remote Sensing and GIS,Peking University,Beijing 100871,China;②Beijing Key Lab of Spatial Information Integration and Applications,Beijing 100871,China;③School of Mathematical Sciences,Peking University,Beijing 100871,China);Research on QTM based data structure serving for identification of map conflicts[J];Science of Surveying and Mapping;2008-05
2 WU Fang,DENG Hong-yan,ZHU Kun-peng,ZHU Qiang;A Study of Automated Generalization Framework Designed for Quality Control[J];Bulletin of Surveying and Mapping;2007-09
3 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);Novel Strategy for Maintaining Intersection Relation Among Spatial Entities in Map Simplification[J];Computer Engineering;2007-22
4 MAO Jianhua(1 School of Communication and Information Engineering, Shanghai University, 149 Yanchang Road, Shanghai 200072, China);Constraints on the Distortion of Area Objects in the Process of Map Objects Displacement[J];Geomatics and Information Science of Wuhan University;2008-03
5 TIAN Jing1,2 GUO Qingsheng1,2 FENG Ke1,2 MA Meng1,2(1 School of Resources and Environment Science,Wuhan University,129 Luoyu Road,Wuhan 430079,China)(2 Key Laboratory of Geographic Information System,Ministry of Education,Wuhan University,129 Luoyu Road,Wuhan 430079,China);Progressive Selection Approach of Streets Based on Information Loss[J];Geomatics and Information Science of Wuhan University;2009-03
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