Linear graphic simplification and displacement operators are usually performed respectively in map generalization. Both of them may give rise to new conflicts with other map features such as surrounding buildings. In this paper, we attempt to coordinate these two operators to avoid repetitious detection of spatial conflicts, thus enhancing the efficiency of data processing. Linear graphic simplification has been taken into account in the process of displacement by transferring the linear graphic simplification into displacement of points on the line, constructing propagation paths between proximal map objects and considering spatial context and map perception rules. At the same time, the spatial characteristics of map objects are maintained as far as possible. Also, the roads and their surrounding buildings as an example are handled by means of this method, and effectiveness and availability of this method is verified.
GUO Qingsheng
,
WANG Lin
,
SUN Yageng
,
ZHOU Lin
,
LONG Yi
. The Collaborative Method of Linear Graphic Simplification and Displacement[J]. Acta Geodaetica et Cartographica Sinica, 2016
, 45(7)
: 850
-857
.
DOI: 10.11947/j.AGCS.2016.20150513
[1] MULLER J C. The Removal of Spatial Conflicts in Line Generalization[J]. Cartography and Geographic Information Systems, 1990, 17(2):141-149.
[2] LI Zhilin, OPENSHAW S. Algorithms for Automated Line Generalization Based on a Natural Principle of Objective Generalization[J]. International Journal of Geographical Information Systems, 1992, 6(5):373-389.
[3] 郭庆胜. 线状要素图形综合的渐进方法研究[J]. 武汉测绘科技大学学报, 1998, 23(1):52-56. GUO Qingsheng. Study on Progressive Approach to Graphic Generalization of Linear Feature[J]. Journal of Wuhan Technical University of Surveying and Mapping, 1998, 23(1):52-56.
[4] SAALFELD A. Topologically Consistent Line Simplification with the Douglas-Peucker Algorithm[J]. Cartography and Geographic Information Science, 1999, 26(1):7-18.
[5] GUO Qingsheng, BRANDENBERGER C, HURNI L. A Progressive Line Simplification Algorithm[J]. Geo-Spatial Information Science, 2002, 5(3):41-45.
[6] 朱鲲鹏, 武芳, 王辉连, 等. Li-Openshaw算法的改进与评价[J]. 测绘学报, 2007, 36(4):450-456. ZHU Kunpeng, WU Fang, WANG Huilian, et al. Improvement and Assessment of Li-Openshaw Algorithm[J]. Acta Geodaetica et Cartographica Sinica, 2007, 36(4):450-456.
[7] BURGHARDT D, MEIER S. Cartographic Displacement Using the Snakes Concept[C]//FÖRSTNER W, PLVMER L. Semantic Modeling for the Acquisition of Topografic Information from Images and Maps. Basel:Birkhaeuser Verlag, 1997:59-71.
[8] BADER M. Energy Minimization Methods for Feature Displacement in Map Generalization[D]. Zürich:University of Zürich, 2001.
[9] 武芳, 侯璇, 钱海忠, 等. 自动制图综合中的线目标位移模型[J]. 测绘学报, 2005, 34(3):262-268. WU Fang, HOU Xuan, QIAN Haizhong, et al. A Model for Road Network Displacement in Automated Map Generalization[J]. Acta Geodaetica et Cartographica Sinica, 2005, 34(3):262-268.
[10] 吴小芳, 杜清运, 胡月明, 等. 基于改进Snake模型的道路网空间冲突处理[J]. 测绘学报, 2008, 37(2):223-229. WU Xiaofang, DU Qingyun, HU Yueming, et al. Disposal of Spatial Conflict between the Roads Networks Based on Improved Snake Model[J]. Acta Geodaetica et Cartographica Sinica, 2008, 37(2):223-229.
[11] LIU Yuangang, GUO Qingsheng, SUN Yageng. A Complete Solution of Cartographic Displacement Based on Elastic Beams Model and Delaunay Triangulation[C]//Proceedings of the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Suzhou:ISPRS Technical Commission IV Symposium, 2014, XL-4:163-168.
[12] 艾廷华. 基于场论分析的建筑物群的移位[J]. 测绘学报, 2004, 33(1):89-94. AI Tinghua. A Displacement of Building Cluster Based on Field Analysis[J]. Acta Geodaetica et Cartographica Sinica, 2004, 33(1):89-94.
[13] 何津, 费立凡. 解决图形冲突的受限变形所涉及的数学原则——以道路与建筑物的关系为例[J]. 武汉大学学报(信息科学版), 2007, 32(4):326-330. HE Jin, FEI Lifan. Mathematical Methods Involved in Constrained Reshaping for Solving Graphic Conflicts between Streets and Buildings[J]. Geomatics and Information Science of Wuhan University, 2007, 32(4):326-330.
[14] 费立凡, 何津. 解决街道与建筑物图形冲突的移位模型研究[J]. 武汉大学学报(信息科学版), 2007, 32(6):540-543. FEI Lifan, HE Jin. Displacement Models for Solving Graphic Conflicts between Streets and Buildings[J]. Geomatics and Information Science of Wuhan University, 2007, 32(6):540-543.
[15] 周启, 艾廷华, 张翔. 面向多重空间冲突解决的移位场模型[J]. 测绘学报, 2013, 42(4):615-620. ZHOU Qi, AI Tinghua, ZHANG Xiang. A Displacement Field Model to Resolve Multiple Spatial Conflicts[J]. Acta Geodaetica et Cartographica Sinica, 2013, 42(4):615-620.
[16] RUAS A. A Method for Building Displacement in Automated Map Generalisation[J]. International Journal of Geographical Information Science, 1998, 12(8):789-803.
[17] HØJHOLT P. Solving Space Conflicts in Map Generalization:Using a Finite Element Method[J]. Cartography and Geographic Information Science, 2000, 27(1):65-74.
[18] HARRIE L. An Optimisation Approach to Cartographic Generalisation[D]. Sweden:Lund University, 2001.
[19] BADER M, BARRAULT M, WEIBEL R. Building Displacement over a Ductile Truss[J]. International Journal of Geographical Information Science, 2005, 19(8-9):915-936.
[20] LONERGAN M, JONES C B. An Iterative Displacement Method for Conflict Resolution in Map Generalization[J]. Algorithmica, 2001, 30(2):287-301.
[21] WARE J M, JONES C B, THOMAS N. Automated Map Generalization with Multiple Operators:A Simulated Annealing Approach[J]. International Journal of Geographical Information Science, 2003, 17(8):743-769.
