Probe based identification and validation of roundabout junctions
First Claim
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1. A method comprising:
- identifying probe data for a geographic region, the probe data received from one or more vehicles and the probe data including points associated with geographic locations and headings;
shifting, by a processor, locations of the points in predetermined directions with respect to the corresponding headings to a location grid;
performing, by the processor, an analysis of the points in the location grid according to the heading; and
identifying a roundabout road formation based on the analysis.
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Abstract
Probe data including points with geographic locations and heading angles are identified for a geographic area. A translation is performed on the points in the probe data in a predetermined direction orthogonal to the corresponding heading. The translated points are aggregated according to a location grid. The aggregated points are analyzed from the location grid according to the heading. A potential location for a center of a roundabout road formation is determined based on the analysis.
14 Citations
20 Claims
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1. A method comprising:
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identifying probe data for a geographic region, the probe data received from one or more vehicles and the probe data including points associated with geographic locations and headings; shifting, by a processor, locations of the points in predetermined directions with respect to the corresponding headings to a location grid; performing, by the processor, an analysis of the points in the location grid according to the heading; and identifying a roundabout road formation based on the analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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detecting a heading and a geographic location of a mobile device associated with a vehicle; providing the heading and the geographic location to a roundabout analysis, wherein the geographic location is shifted in a predetermined direction with respect to the heading to a cell in a location grid, wherein the roundabout analysis is performed on probe data including the heading and the geographic location of the mobile device to identify a roundabout road formation; and receiving geographic data including the roundabout road formation from the roundabout analysis. - View Dependent Claims (12, 13, 14)
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15. An apparatus comprising:
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a memory configured to store probe data for a geographic region, the probe data collected at one or more vehicles and the probe data including points associated with geographic locations and headings; a controller configured to shift locations of the points in predetermined directions with respect to the corresponding headings to a location grid and perform an analysis on the points in the location grid according to the heading, wherein a roundabout road formation is identified from the analysis. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification