Automatic detection of the number of lanes into which a road is divided

摘要

This invention concerns a computer-implemented method for determining a number of lanes on a road. The method comprises receiving an image, the image being a photographic image of the road or an image derived from the photographic image of the road, carrying out an analysis of the image to identify lane dividers of the road and determining a number of lanes into which the road is divided from the identification of the lane dividers. The method may comprise determining a confidence level for the determined value for the number of lanes. Map data of a plurality of roads may be generated using the value for the number of lanes determined from the computer-implemented method.

主权项

1. A computer-implemented method for determining a number of lanes on a road comprising:
receiving an image, the image being a photographic image of the road or an image derived from the photographic image of the road, carrying out an analysis of the image to identify lane dividers of the road, receiving probe data, the probe data comprising position data collected from vehicles travelling along the road, determining a combined lane count from the identification of the lane dividers from the analysis of the image and from features derived from an analysis of the probe data, determining a confidence level for the determined combined lane count according to a confidence level function, and determining, from the combined lane count, a number of lanes into which the road is divided.