| 摘要 |
A system and method are provided which are capable of reliably and effectively detecting a white line in an upper region of a road image by dividing the road image into, at least, two regions positioned up and down and using a result from a detection of the white line in a lowest region where the road image is less affected by noise. When a road surface is planar, both intersections of straight lines, by which left and right white lines are approximated, in a lowest region out of regions, positioned up and down, obtained by dividing a road image containing left and right white lines drawn in parallel on the road surface and intersections of straight lines, by which left and right white lines are approximated in an upper region of out of the two regions existing on one horizontal line. The left and right first straight lines, by which the left and right white lines are approximated, are detected in the lowest region and a horizontal line is calculated from a first vanishing point being the intersection of the left and right straight lines, and based on a characteristic that the intersection of the left and right straight lines, by which the left and right white lines are approximated, are approximated in the upper region, existing on the horizontal line, the intersection is detected and straight lines, by which the left and right white lines are approximated, is obtained in the upper region. |
