Method of and apparatus for producing lane information

Details Method of and apparatus for producing lane information Method of and apparatus for producing lane information

G - Physics

06

T

G06T 5/00 (2006.01) G06T 5/30 (2006.01)

Patent

CA 2705375

The invention relates to a method of producing lane information for use in a map database. The method comprises: - acquiring one or more source images of a road surface and associated position and orientation data, the road having a direction and lane markings parallel to the direction of the road; - acquiring road information representative of the direction of said road; - transforming the one or more source images to obtain a transformed image in dependence of the road information, wherein each column of pixels of the transformed image corresponds to a surface parallel to the direction of said road; - applying a filter with asymmetrical mask on the transformed image to obtain a filtered image; and, - producing lane information from the filtered image in dependence of the position and orientation data associated with the one or more source images.

L'invention concerne un procédé de production d'informations de voie pour une utilisation dans une base de données de cartes. Le procédé comprend : - l'acquisition d'une ou plusieurs images source d'une surface de route et des données de position et d'orientation associées, la route ayant une direction et des marquages de voie parallèles à la direction de la route; - l'acquisition d'informations de route représentatives de la direction de ladite route; - la transformation d'une ou de plusieurs images source pour obtenir une image transformée conformément aux informations de route, chaque colonne de pixels de l'image transformée correspondant à une surface parallèle à la direction de ladite route; - l'application d'un filtre à masque asymétrique sur l'image transformée pour obtenir une image filtrée; et, - la production d'informations de voie à partir de l'image filtrée conformément aux données de position et d'orientation associées à l'une ou plusieurs images source.

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