Method and system for generating an image-textured digital...

G - Physics – 06 – T

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G06T 17/05 (2011.01) G09B 9/08 (2006.01)

Patent

CA 2651908

A computer-implemented method for generating an image-textured digital surface model (DSM) for a geographical area of interest (21) including both buildings and terrain may include using a computer (24) to generate a digital elevation model (DEM) (40) of both the buildings and terrain for the geographical area of interest (32). The method may further include providing a collection of optical images including oblique optical images for the geographical area of interest including both buildings and terrain (34). The computer may also be used to selectively superimpose oblique optical images from the collection of optical images onto the DEM of both the buildings and terrain for the geographical area of interest and to thereby generate the image-textured DSM (46-49) for the geographical area of interest including both buildings and terrain (36).

Procédé informatique de génération d'un modèle numérique de surface (DSM) à texture d'image pour une régions géographiques d'intérêt (21) comprenant à la fois des zones bâties et des zones non bâties. Ce procédé consiste au moyen d'un ordinateur à générer un modèle d'élévation numérique (DEM) (40) des zones construites et non construites de la région géographique d'intérêt (32). De plus, le procédé consiste à recueillir une collection d'images optiques comprenant des images obliques de la région géographique avec zones bâties et non bâties (34). L'ordinateur peut également s'utiliser pour superposer sélectivement des images optiques obliques prises dans la collection d'images optiques sur le DEM des zones à la fois bâties et non bâties de la zone géographique considérée et générer ainsi un modèle numérique (DSM) (46-49) à texture d'image pour ladite région géographique comprenant des zones à la fois bâties et non bâties (36).

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