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Proceedings of CAD'16, 2016, 70-75
Research on Terrain Physical Modelling Directly from Digital Elevation Model Data

Hao Jingbin, Ji Hansong, Han Zhengtong, China University of Mining and Technology

Abstract. Terrain physical models are needed in many application domains of GIS, such as town planning, landscape architecting, land-use planning, transportation planning, military strategy planning, watershed and geological education, etc. Rapid Prototyping (RP) is a kind of advanced manufacturing technology which builds physical models layer by layer in accordance with the Computer Aided Design (CAD) models. RP system use Stereo Lithography (STL) file format to fabricate physical models, which express the geometric surface information through a set of connected triangle facets. Whereas the GIS data is mostly stored as Digital Elevation Model (DEM) file format, which use elevation data to describe the terrain surface information through a set of regular grids or irregular triangles. Therefore, when using the RP system to fabricate a terrain physical model, the GIS data should be converted to the STL file firstly. 

Keywords. Rapid Prototyping, Terrain Physical Models, Digital Elevation Model, STL file, Model Simplification

DOI: 10.14733/cadconfP.2016.70-75