Patent ID: 8355540
Filing Date: 2013-01-15
Classification: B60W,G06K

Abstract:
1. A detector for identifying a road lane boundary using a digitalized optical image of the region in front of the vehicle, the detector comprising: a correlator configured to select the edges which are to be used for road lane estimation by searching for extreme values of convolution responses, and to weight each convolution response by a weighting factor before searching for extreme values; a histogram analysis unit configured to group the extracted edges into pairs, and to determine a frequency distribution of the distances between two paired edges as a histogram, and to use said frequency distribution to determine the distances between two grouped edges forming a frequency peak or a frequency plateau in the histogram as nominal edge widths; and a weighting factor determination unit configured to determine, for an edge, the weighting factor of the convolution response in the correlator in such a manner that the weight determined by the weighting factor for an edge of the paired edges is higher the smaller the deviation of the distance between the grouped edges from the nominal edge width.