terrains - Introduction to triangulations: Terrain Analysis...

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1 Introduction to triangulations: Terrain Analysis Rodrigo I. Silveira Universitat Politècnica de Catalunya Geometria Computacional FIB - UPC Introduction to triangulations
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2 Introduction to triangulations What’s a terrain? “An area of land, when considering its natural features” Continually varying surface – What varies (for us) is elevation Introduction to triangulations What’s a terrain for us? Digital terrain model • Also: “digital elevation model” or just DEM Representation of the variation of relief of a terrain – That is… altitude
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3 Introduction to triangulations What do we want DEMs for? Elevation data for map creation Creation of orthophoto maps Introduction to triangulations What do we want DEMs for? 3D Visualization Source: Rheinmetall Defence
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4 Introduction to triangulations What do we want DEMs for? Terrain analysis – Planning support Cross-country visibility • Road and dam planning – Hydrology Watershed computation • Rainfall runoff simulation Introduction to triangulations How are DEMs produced? Main ways to produce the data – Digitizing from existing maps – Land surveying – Remote sensing
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5 Introduction to triangulations Getting data: digitizing
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This note was uploaded on 04/01/2011 for the course MA GEOC taught by Professor Julianpleife during the Spring '11 term at Universitat Politècnica de Catalunya.

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terrains - Introduction to triangulations: Terrain Analysis...

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