The invention relates to a method and system for an automatic generation of a road map of a construction site or mining site. Data records collected by vehicles equipped with a GNSS-positioning system while driving on the construction site or mining site are provided, each data record comprising a position information representing a two-dimensional or three-dimensional position of the vehicle, an identification reference specific to a corresponding vehicle, a time tag, and a heading information; the data records are assigned to corresponding trips based on the time tag and the identification reference; the trips are mapped within an area; the area is divided into a plurality of uniform tiles; for each tile, a heading information variance of the data records covered by the respective tile is determined; a tile is defined as junction tile, if the tile has a heading information variance higher than a computed threshold variance; an area of interest (Aol) having a perimeter is determined by which a plurality of junction tiles is surrounded, the perimeter crossing a plurality of trips at entry boundary points and at exit boundary points; one or more entry transition points are determined by clustering entry boundary points based on a similarity criterion, wherein each entry transition point is located at a centroid of the respective cluster, one or more exit transition points are determined by clustering exit boundary points based on the similarity criterion, wherein each exit transition point is located at a centroid of the respective cluster, a graph of the road map is built by connecting the transition points based on the trips.
GNSS-BASED MAP GENERATION
GNSS-BASIERTE KARTENERZEUGUNG
GÉNÉRATION DE CARTE BASÉE SUR GNSS
14.10.2020
Patent
Elektronische Ressource
Englisch
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