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《Standardization for Surveying and Mapping》 2005-03
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Discussions on the Building of DLG, DTM, DEM, and DOM and Their Relationships

AN Wenmei  
Digital Line Graphic (DLG), Digital Terrain Model (DTM), Digital Elevation Model (DEM), and Digital Orthographic Map (DOM) (also known as "4D") are kernel and fundamental components of Spatial database. The ways of their production are becoming major concerns. This paper mainly focuses on the methods of 4D production and their relationships; it indicates that 4D production is basically manual operations, so it is somewhat cockamamie and low efficiency. It finally concludes that the most urgent challenge is to simple, and to intelligentize 4D production and transference.
【CateGory Index】: P208
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【Co-citations】
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