Image analysis – Applications – Vehicle or traffic control
Patent
1997-07-31
1999-11-23
Chang, Jon
Image analysis
Applications
Vehicle or traffic control
340903, 348119, 701 28, 701301, G06K 900
Patent
active
059914270
ABSTRACT:
The invention is directed to a method and apparatus for detecting a lane on a road, the latter of which includes an edge sensor (ED) for detecting edges indicative of boundaries of opposite sides of each lane, an edge memory (EM) for storing the edges to form a couple of continuous lines of edge groups indicative of the opposite boundaries of the lane, and an image processor (DP) for defining the opposite boundaries of the lane on a plane in a three-dimensional geometry. A center of curvature defining device (RC) defines a center of curvature to the opposite boundaries of the lane. An edge line extracting device (ES) divides the edge groups stored in the edge memory into a plurality of continuous regions each having a predetermined length along a concentric circle arc having the same center as the center of curvature, and extracts a pair of edge lines from each region. A tangent defining device (TL) defines a couple of tangents to the edge lines, and a normal defining device (NL) defines a normal to the tangents. Then, a segment setting device (SD) defines a couple of intersections of the normal with the tangents, and sets a line segment between the intersections as a segment of the lane. The image processor (DP) renews the opposite boundaries of the lane on the basis of the segment of the lane.
REFERENCES:
patent: 5208750 (1993-05-01), Kurami et al.
patent: 5245422 (1993-09-01), Borcherts et al.
patent: 5465079 (1995-11-01), Bouchard et al.
patent: 5485381 (1996-01-01), Heintz et al.
patent: 5528888 (1996-06-01), Miyamoto et al.
patent: 5555312 (1996-09-01), Shima et al.
patent: 5555555 (1996-09-01), Sato et al.
patent: 5617086 (1997-04-01), Klashinsky et al.
patent: 5708427 (1998-01-01), Bush
patent: 5790403 (1998-08-01), Nakayama
"A method to extract corresponding points in road image analysis" disclosed in the papers of electronic points in road image analysis disclosed in Electronic Information and Communication Committee, D-II vol. J72-D-11 No. 5, pp. 827-830, Pub. May, 1989.
"A Zero-Bank Algorithm for Inverse Perspective of a Road from a Single Image" (Proc. IEEE Interl. Conf. on Robotics and Automation, pp. 1444-1449, pub. Mar. 1987.
Inoue Ryo
Kakinami Toshiaki
Kimura Yoshikatsu
Aisin Seiki Kabushiki Kaisha
Chang Jon
Patel Jayanti K.
LandOfFree
Method and apparatus for detecting a lane on a road does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for detecting a lane on a road, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting a lane on a road will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1231289