Multi-level representation of terrain features on a contour map
|Abstract:||Contour lines are important for quantitatively displaying relief and identifying morphometric features on a map. Contour trees are often used to represent spatial relationships between contours and assist the user in analysing the terrain. How- ever, automatic analysis from the contour tree is still limited as features identified on a map by sets of contours are not only characterised by local relationships be- tween contours but also by relationships with other features at different levels of representation. In this paper, a new method based on adjacency and inclusion re- lationships between regions defined by sets of contours is presented. The method extracts terrain features and stores them in a feature tree providing a description of the landscape at multiple levels of detail. The method is applied to terrain analysis and generalisation of a contour map by selecting the most relevant features accord- ing to the purpose of the map. Experimental results are presented and discussed.|
|Document Type:||Article de recherche|
|Issue Date:||11 April 2012|
|Open Access Date:||13 October 2016|
|This document was published in:||GeoInformatica, Vol. 17 ( 2), 301–324 (2013)|
|Collection:||Articles publiés dans des revues avec comité de lecture|
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