Method and apparatus for enhancing a digital elevation model...

Details Method and apparatus for enhancing a digital elevation model... Method and apparatus for enhancing a digital elevation model...

G - Physics

06

K

G06K 9/48 (2006.01) G06T 7/60 (2006.01)

Patent

CA 2597057

A computer implemented method is for processing an original digital elevation model (DEM) including data for terrain (52) and a plurality of objects (54, 56) thereon. The method includes generating a lower-resolution DEM (104) from the original DEM (102), and generating an objects-only DEM (108) based upon a comparison of the lower-resolution DEM (104) and the original DEM (102). The method further includes reducing noise in the objects-only DEM (114, 116).

L'invention porte sur un procédé informatique permettant de traiter un modèle d'élévation numérique original (DEM) comprenant des données pour le terrain (52) ainsi qu'une pluralité d'objets (54, 56). Ce procédé consiste à générer un DEM à résolution inférieure (104) à partir du DEM originel (bloc 102), et à générer un DEM seulement à objets fondé sur une comparaison du DEM à résolution inférieure avec le DEM originel (bloc 108). Ce procédé consiste aussi à réduire le bruit dans le DEM à objets seulement (114, 116) .

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