Change detection using curve alignment
First Claim
1. A computer-implemented method comprising:
- receiving, by one or more computing devices, data identifying an object detected in a vehicle'"'"'s environment, the data including location coordinates for the object;
identifying, by the one or more computing devices, a corresponding feature from pre-stored map information based on the location coordinates and a map location of the corresponding feature, wherein the corresponding feature is defined as a curve and associated with a tag identifying a type of the corresponding object;
identifying, by the one or more computing devices, a tolerance constraint based on the tag identifying the type of the corresponding object;
dividing, by the one or more computing devices, the curve into two or more line segments, each line segment of the two or more line segments having a first position;
changing, by the one or more computing devices, the first position of the one of the two or more line segments to determine a second position of the one of the two or more line segments based on the location coordinates and the tolerance constraint, wherein changing the first position includes at least one of shifting or rotating the first position of the one of the two or more line segments;
determining, by the one or more computing devices, a value based on a comparison of the first position to the second position, wherein the value indicates a likelihood that the corresponding feature has changed; and
using, by the one or more processors, the value to maneuver the vehicle in an autonomous driving mode.
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Accused Products
Abstract
Aspects of the disclosure relate to determining whether a feature of map information. For example, data identifying an object detected in a vehicle'"'"'s environment and including location coordinates is received. This information is used to identify a corresponding feature from pre-stored map information based on a map location of the corresponding feature. The corresponding feature is defined as a curve and associated with a tag identifying a type of the corresponding object. A tolerance constraint is identified based on the tag. The curve is divided into two or more line segments. Each line segment has a first position. The first position of a line segment is changed in order to determine a second position based on the location coordinates and the tolerance constraint. A value is determined based on a comparison of the first position to the second position. This value indicates a likelihood that the corresponding feature has changed.
254 Citations
20 Claims
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1. A computer-implemented method comprising:
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receiving, by one or more computing devices, data identifying an object detected in a vehicle'"'"'s environment, the data including location coordinates for the object; identifying, by the one or more computing devices, a corresponding feature from pre-stored map information based on the location coordinates and a map location of the corresponding feature, wherein the corresponding feature is defined as a curve and associated with a tag identifying a type of the corresponding object; identifying, by the one or more computing devices, a tolerance constraint based on the tag identifying the type of the corresponding object; dividing, by the one or more computing devices, the curve into two or more line segments, each line segment of the two or more line segments having a first position; changing, by the one or more computing devices, the first position of the one of the two or more line segments to determine a second position of the one of the two or more line segments based on the location coordinates and the tolerance constraint, wherein changing the first position includes at least one of shifting or rotating the first position of the one of the two or more line segments; determining, by the one or more computing devices, a value based on a comparison of the first position to the second position, wherein the value indicates a likelihood that the corresponding feature has changed; and using, by the one or more processors, the value to maneuver the vehicle in an autonomous driving mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20)
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9. A system comprising one or more computing devices, each having one or more processors configured to:
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receive data identifying an object detected in a vehicle'"'"'s environment, the data including location coordinates for the object; identify a corresponding feature from pre-stored map information based on the location coordinates and a map location of the corresponding feature, wherein the corresponding feature is defined as a curve and associated with a tag identifying a type of the corresponding object; identify a tolerance constraint based on the tag identifying the type of the corresponding object; divide the curve into two or more line segments, each line segment of the two or more line segments having a first position; change the first position of the one of the two or more line segments to determine a second position of the one of the two or more line segments based on the location coordinates and the tolerance constraint, wherein changing the first position includes at least one of shifting or rotating the first position of the one of the two or more line segments; and determine a value based on a comparison of the first position to the second position, wherein the value indicates a likelihood that the corresponding feature has changed; and use the value to maneuver the vehicle in an autonomous driving mode. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 18)
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17. A non-transitory, tangible computer readable medium on which instructions are stored, the instructions, when executed by one or more processors cause the one or more processors to perform a method, the method comprising:
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receiving data identifying an object detected in a vehicle'"'"'s environment, the data including location coordinates for the object; identifying a corresponding feature from pre-stored map information based on the location coordinates and a map location of the corresponding feature, wherein the corresponding feature is defined as a curve and associated with a tag identifying a type of the corresponding object; identifying a tolerance constraint based on the tag identifying the type of the corresponding object; dividing the curve into two or more line segments, each line segment of the two or more line segments having a first position; changing the first position of the one of the two or more line segments to determine a second position of the one of the two or more line segments based on the location coordinates and the tolerance constraint, wherein changing the first position includes at least one of shifting or rotating the first position of the one of the two or more line segments; determining a value based on a comparison of the first position to the second position, wherein the value indicates a likelihood that the corresponding feature has changed; and using the value to maneuver the vehicle in an autonomous driving mode. - View Dependent Claims (19)
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Specification