Method of detecting bends on a road and system implementing same
First Claim
1. Method of detecting from a vehicle variations in path, in particular a bend or straight line, on a road comprising a surface (1) and road edges (2, 3), characterised in that it comprises the following operations:
- taking an image of a road scene unfolding in front of the vehicle and at least partly illuminated by the vehicle, determining, for each pixel in the image, a light decrease gradient, analysing these light gradients and determining an image of the road edges, mathematically discriminating the gradients from the image of the road edges, analysing this discrimination and determining the angle of the bend.
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Abstract
The invention concerns a method of detecting from a vehicle a bend on a road comprising a surface (1) and road edges (2, 3), comprising the following operations:
taking an image of a road scene unfolding in front of the vehicle and at least partly illuminated by the vehicle,
determining, for each pixel in the image, a light decrease gradient,
analysing these decrease gradients and determining an image of the road edges,
mathematically discriminating the decrease gradients from the image of the road edges,
analysing this discrimination and determining the angle of the bend.
The invention also concerns a system for implementing the method of the invention comprising a camera (10) mounted in the vehicle, an image processing unit (20) and a neural network (21).
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Citations
10 Claims
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1. Method of detecting from a vehicle variations in path, in particular a bend or straight line, on a road comprising a surface (1) and road edges (2, 3), characterised in that it comprises the following operations:
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taking an image of a road scene unfolding in front of the vehicle and at least partly illuminated by the vehicle, determining, for each pixel in the image, a light decrease gradient, analysing these light gradients and determining an image of the road edges, mathematically discriminating the gradients from the image of the road edges, analysing this discrimination and determining the angle of the bend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification