System and method for determining position and distance of objects using road fiducials
First Claim
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1. A method comprising:
- detecting an object traveling on a road in a vicinity of a vehicle;
identifying, with at least one of a camera or a sensor, whether a ground marker on a surface of the road is visible;
determining, by one or more processors, that the object has effected in the visibility of the ground marker;
identifying, by the one or more processors, position data for the ground marker; and
determining, with the one or more processors, at least one of a geographic position of the object or a relative position of the object to the vehicle based on the position data and the effect of the object on the visibility of the ground marker.
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Abstract
Aspects of the invention relate generally to autonomous vehicles. The features described improve the safety, use, driver experience, and performance of these vehicles by using ground markers to determine the position of the surrounding objects. In particular, the autonomous vehicle is capable of detecting nearby objects, such as vehicles and pedestrians, and is able to determine the position of these objects based on whether they have passed over ground markers.
27 Citations
19 Claims
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1. A method comprising:
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detecting an object traveling on a road in a vicinity of a vehicle; identifying, with at least one of a camera or a sensor, whether a ground marker on a surface of the road is visible; determining, by one or more processors, that the object has effected in the visibility of the ground marker; identifying, by the one or more processors, position data for the ground marker; and determining, with the one or more processors, at least one of a geographic position of the object or a relative position of the object to the vehicle based on the position data and the effect of the object on the visibility of the ground marker. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a camera for detecting a plurality of ground markers on a surface of a road; a memory for storing position data for the plurality of ground markers; and a processor in communication with the camera and the memory, the processor being operable to; receive, over a network, updated ground marker data from a remote computing device; store the updated ground marker data in the memory; determine, based on the updated ground marker data, whether a first ground marker, from the plurality of ground markers, is visible to the camera; identify when an object traveling on the road in a vicinity of a vehicle has caused a change in the visibility of the first ground marker; identifying the position data for the first ground marker; and determine at least one of a geographic position of the object or a relative position of the object to the vehicle based on the accessed position data. - View Dependent Claims (11, 12, 13)
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14. A method comprising:
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identifying, with at least one of a camera or a sensor, a plurality of ground markers on a surface of a road, wherein the plurality of ground markers are positioned so that at least one or more ground markers from the plurality become at least partially obscured, from the perspective of a vehicle, by a first object traveling along the road; and accessing, by one or more processors, the positions of the plurality of ground markers in one or more databases; and determining, by the one or more processors, a geographic position of the first object or a relative position of the first object based on the positions of the one or more ground markers and based on the one or more ground markers being at least partially obscured by the first object. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification