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《Engineering of Surveying and Mapping》 2007-03
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The methods of utilizing contours to build DEM

ZHANG Kai-xuan1,PAN Meng-qing2,FANG Hui2,WU Wen-bo1,LI Lei1(1.Liaoning Technical University,Fuxin 123000,China;2.Guilin Institute of Surveying and Mapping,Guilin 541002,China)  
Digital Elevation Model(DEM) is an important type of basic data in GIS,and its integration with GIS is closer step by step.It plays a more and more important role in the surveying field and has a bright foreground in application.High quality DEM construction is the important precondition of the application.The contours map is an important and cheap data of DEM generation.Firstly,it introduces the notion of DEM, expression methods,common models and other groundwork.Then,discusses some common methods of DEM generation from contours and makes some analysis between these methods.How to generate high quality DEM from contours,taking this as the target,it discusses the way of processing the contours,endowing elevation to the contours,simplification the contours and the DEM generation.
【Fund】: 教育部博士点基金资助项目(20050147002);; 辽宁省自然科学基金资助项目(20042175)
【CateGory Index】: P208
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