Lane recognizing image processing system
First Claim
1. A lane recognizing image processing system installed on a motor vehicle, comprising:
- image pickup means for picking up scenes appearing in front of said motor vehicle;
lane marking candidate point extraction means for extracting candidate points of lane markings from an image taken by said image pickup means as lane marking candidate points; and
lane recognition means for recognizing, on the basis of a set of said lane marking candidate points, a lane on a road on which said motor vehicle is traveling,wherein said lane recognition means includes;
lane marking candidate point position converting means for converting said lane marking candidate points to lane marking candidate point positions,wherein said lane marking candidate point position converting means recognizes as said lane marking candidate point positions the positions on a straight line extending in a direction toward a null point onto and along which said lane marking candidate points are converted, and recognizes a midpoint of a lane marking candidate region including said lane marking candidate points as said lane marking candidate point position;
threshold value setting means for setting a threshold value serving as reference for decision as to validity of said set of the lane marking candidate points; and
lane marking candidate decision means for extracting paired points from said set of the lane marking candidate points along a direction corresponding to traveling direction of said motor vehicle to thereby make decision as to whether or not the paired points whose inter-point distance exceeds said threshold value exist among said extracted paired points.
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Accused Products
Abstract
A lane recognizing image processing system for recognizing lane markings laid on a driving road for motor vehicles includes a lane marking candidate point extraction means (20) for extracting lane marking candidate points (C) from an image (G) taken by an image pickup means (10) mounted on the motor vehicle, and a lane recognizing means (30) for recognizing a lane defined on the road on the basis of set of the lane marking candidate points (C). The lane recognizing means (30) includes a lane marking candidate point position converting means (31) for recognizing as lane marking candidate point positions the positions of the lane marking candidate points (C) transformed onto a straight line extending toward a null point.
21 Citations
8 Claims
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1. A lane recognizing image processing system installed on a motor vehicle, comprising:
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image pickup means for picking up scenes appearing in front of said motor vehicle; lane marking candidate point extraction means for extracting candidate points of lane markings from an image taken by said image pickup means as lane marking candidate points; and lane recognition means for recognizing, on the basis of a set of said lane marking candidate points, a lane on a road on which said motor vehicle is traveling, wherein said lane recognition means includes; lane marking candidate point position converting means for converting said lane marking candidate points to lane marking candidate point positions, wherein said lane marking candidate point position converting means recognizes as said lane marking candidate point positions the positions on a straight line extending in a direction toward a null point onto and along which said lane marking candidate points are converted, and recognizes a midpoint of a lane marking candidate region including said lane marking candidate points as said lane marking candidate point position; threshold value setting means for setting a threshold value serving as reference for decision as to validity of said set of the lane marking candidate points; and lane marking candidate decision means for extracting paired points from said set of the lane marking candidate points along a direction corresponding to traveling direction of said motor vehicle to thereby make decision as to whether or not the paired points whose inter-point distance exceeds said threshold value exist among said extracted paired points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification