Method of and apparatus for producing road information

摘要

An embodiment of the present invention discloses a method of producing road information for use in a map database including: acquiring a source image from an image sequence obtained by means of a terrestrial based camera mounted on a moving vehicle; determining a road color sample from pixels associated with a predefined area in the source image representative of the road surface in front of or behind the moving vehicle; generating a road surface image from the source image in dependence of the road color sample; and, producing road information in dependence of the road surface image and position and orientation data associated with the source image.