Tire detection for accurate vehicle speed estimation
AssigneeXerox Corporation
InventorsZhigang Fan, Wencheng Wu
Life of this patent
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Abstract
In some aspects of the present application, a computer-implemented method for determining the speed of a motor vehicle in a vehicle speed detection system is disclosed. The method can include receiving a plurality of images of a motor vehicle traveling on a road, each of the images being separated in time by a known interval; determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road based, in part, on one or more identified features of the vehicle in one or more of the plurality of images; and using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.
Claims19
A computer-implemented method for determining the speed of a motor vehicle in a vehicle speed detection system, the method comprising:
- receiving a plurality of images of a motor vehicle traveling on a road, each of the images being separated in time by a known interval;
- determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road based, in part, on one or more identified features of the vehicle in one or more of the plurality of images;
- and
- using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.
A system for determining the speed of a motor vehicle in a vehicle speed detection system, the system comprising:
- an imaging system;
- and
- a processor in communication with said video camera system and a memory, said processor executing machine readable instructions for performing:
- receiving images captured using the imaging system, each of the images being separated in time by a known interval;
- determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road;
- using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.
A computer implemented method for determining the speed of a motor vehicle in a vehicle speed detection system, the method comprising:
- receiving a plurality of images of a moving vehicle, the images captured at known time intervals with each of the images being separated in time by a known interval, said images having been captured using an imaging system;
- determining, for each of at least two of the images, a point of contact where a same tire of the vehicle contacts a surface of the road;
- using the points of contact and the time interval separations to calculate a speed at which the vehicle is traveling on the road.
Dependencies are inferred from the claim text.