Method and system for determining a position of a vehicle
First Claim
1. A method performed by a positioning system of a vehicle for determining a longitudinal position of the vehicle along a road, the road comprising one or more road markings arranged on a surface of the road, the method comprising:
- detecting, by a sensor, a plurality of road markings;
matching, by a matching unit, road markings of the plurality of road markings with mapped road markings of stored map data based on comparing detected characteristics of the plurality of road markings with mapped characteristics of the mapped road markings, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings;
identifying, by an identifying unit, a mapped identified road marking determined to correspond with a detected identified road marking of the plurality of road markings; and
determining, by a positioning determining unit, a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking.
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Accused Products
Abstract
A method performed by a positioning system of a vehicle is disclosed for determining a position of the vehicle along a road including one or several road markings arranged on a surface of the road. The positioning system detects road markings, matches detected road markings with mapped road markings of stored map data based on comparing characteristics of the detected road markings with mapped characteristics of the mapped road markings. The positioning system furthermore identifies a mapped identified road marking determined to correspond with a detected identified road marking, and determines a positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking. A positioning system, a vehicle including such a positioning system, and a mapping unit and a mapping method performed therein for creating map data to be utilized by the above mentioned positioning system are also disclosed.
34 Citations
15 Claims
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1. A method performed by a positioning system of a vehicle for determining a longitudinal position of the vehicle along a road, the road comprising one or more road markings arranged on a surface of the road, the method comprising:
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detecting, by a sensor, a plurality of road markings; matching, by a matching unit, road markings of the plurality of road markings with mapped road markings of stored map data based on comparing detected characteristics of the plurality of road markings with mapped characteristics of the mapped road markings, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings; identifying, by an identifying unit, a mapped identified road marking determined to correspond with a detected identified road marking of the plurality of road markings; and determining, by a positioning determining unit, a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A positioning system for determining a longitudinal position of a vehicle along a road, which road comprises one or several road markings arranged on a surface of the road, the positioning system comprising:
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a vision sensor unit adapted for detecting a plurality of road markings; a matching unit adapted for matching road markings of the plurality of road markings with mapped road markings of stored map data stored on a storage unit of the positioning system, based on comparing detected characteristics of the plurality of road markings with mapped characteristics of the mapped road markings, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings; an identifying unit adapted for identifying a mapped identified road marking determined to correspond with a detected identified road marking of the plurality; and a positioning determining unit adapted for determining a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking. - View Dependent Claims (12)
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13. A method performed by a mapping unit for creating map data reflecting characteristics associated with a road, for enabling a positioning system of a vehicle to determine a position of the vehicle along the road, the method comprising:
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creating the map data by obtaining characteristics associated with the road, the characteristics associated with the road comprising characteristics of one or several road markings arranged on a road surface of the road, wherein the characteristics comprise one or a combination of distances, intervals or relations between road markings, to thereby enable a method performed by a positioning system of a vehicle for determining a longitudinal position of the vehicle along a road, the road comprising one or more road markings arranged on a surface of the road, the method including detecting, by a sensor, a plurality of road markings; matching, by a matching unit, road markings of the plurality of road markings with mapped road markings of stored map data based on comparing detected characteristics of the plurality of road markings with mapped characteristics of the mapped road markings, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings; identifying, by an identifying unit, a mapped identified road marking determined to correspond with a detected identified road marking of the plurality of road markings; and determining, by a positioning determining unit, a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking.
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14. A mapping unit for creating map data reflecting characteristics associated with a road, for enabling a positioning system of a vehicle to determine a position of the vehicle along the road, the mapping unit being adapted to:
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create the map data by obtaining characteristics associated with the road, the characteristics associated with the road comprising characteristics of one or several road markings arranged on a road surface of the road, wherein the characteristics comprise one or a combination of distances, intervals or relations between road markings, to thereby enable a positioning system for determining a longitudinal position of the vehicle along a road, which road comprises one or several road markings arranged on a surface of the road, the positioning system including a vision sensor unit adapted for detecting a plurality of road markings; a matching unit adapted for matching road markings of the plurality of road markings with mapped road markings of stored map data stored on a storage unit of the positioning system, based on comparing detected characteristics of the plurality of road markings with mapped characteristics of the mapped road markings, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings; an identifying unit adapted for identifying a mapped identified road marking determined to correspond with a detected identified road marking of the plurality; and a positioning determining unit adapted for determining a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking.
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15. A method performed by a positioning system of a vehicle for determining a longitudinal position of the vehicle along a road, the road comprising one or more road markings arranged on a surface of the road, the method comprising:
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detecting, by a sensor, one or more road markings; matching, by a matching unit, at least one of the one or more road markings with at least one mapped road marking of stored map data based on comparing at least one detected characteristic of the one or more road markings with at least one mapped characteristic of the at least one mapped road marking, wherein the mapped characteristics comprise one or a combination of distances, intervals or relations between road markings; identifying, by an identifying unit, a mapped identified road marking determined to correspond with a detected identified road marking of the one or more road markings; and determining, by a positioning determining unit, a longitudinal positioning estimate of the vehicle along the road based on a mapped road marking position associated with the mapped identified road marking.
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Specification