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《Geography and Geo-Information Science》 2007-04
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Study on Modes of Map Data Updating Based on Generalization

HU Yun-gang1,2,CHEN Jun2,LI Zhi-lin3,ZHAO Ren-liang2,CHEN Yan-hong4(1.Department of Surveying and Land Science,China University of Mining and Technology,Beijing 100083;2.National Geomatics Center of China,Beijing 100044;3.Department of Land Surveying and Geo-Informatics,The Hong Kong Polytechnic University,Kowloon 999077;4.Shijiazhuang University of Economics,Shijiazhuang 050031,China)  
The map data can be updated using the new data at larger scale based on automated generalization method.For developing the software of this updating way,the classification and applicability of updating modes are investigated firstly.According to the objects generalization and data update,four modes are presented,i.e.a) generalization and substitute,b) integrating the result of generalization and the old map,c) incremental generalization for updating,d) overlapping the new and old data and generalization for updating.The mode of the last one is applicable considering the current status of map automated generalization and the management of maps with different scales.Based on this mode,the process of updating road data is proposed,and the software module is developed,which applied to update road data in 1 ∶ 50 000 map from 1 ∶ 10 000 road data.The case verifies this mode is practical.
【Fund】: 国家自然科学基金国家杰出青年基金类港澳青年学者合作研究基金项目(40329001);; 国家自然科学基金重点项目(40337055);; 国家自然科学基金项目(40301042)
【CateGory Index】: P283.5
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