Probe based identification and validation of roundabout junctions
First Claim
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1. A method comprising:
- receiving probe data for a geographic area;
identifying a plurality of points in the probe data, wherein each of the plurality of points includes a geographic location and a heading;
performing, by a processor, a translation of locations of the plurality of points in the probe data in a predetermined direction orthogonal to the corresponding heading;
aggregating the plurality of points, after translating, according to a location grid;
performing, by the processor, an analysis on the plurality of points in the location grid according to the heading; and
identifying a center of 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.
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Citations
20 Claims
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1. A method comprising:
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receiving probe data for a geographic area; identifying a plurality of points in the probe data, wherein each of the plurality of points includes a geographic location and a heading; performing, by a processor, a translation of locations of the plurality of points in the probe data in a predetermined direction orthogonal to the corresponding heading; aggregating the plurality of points, after translating, according to a location grid; performing, by the processor, an analysis on the plurality of points in the location grid according to the heading; and identifying a center of a roundabout road formation based on the analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus comprising:
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at least one processor; and at least one memory including computer program code for one or more programs;
the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to at least perform;receiving probe data for a geographic area; identifying a plurality of points in the probe data, wherein each of the plurality of points includes a geographic location and a heading; performing a plurality of translations on the plurality of points in the probe data in a predetermined direction orthogonal to the corresponding heading, wherein the plurality of translations are based on iterations of potential radius distances for a roundabout; performing an analysis on the plurality of points in a grid according to the heading; and identifying a center of the roundabout based on the analysis. - View Dependent Claims (18, 19)
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20. A non-transitory computer readable medium including instructions that when executed are operable to:
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receiving probe data for a geographic area; identifying a plurality of points in the probe data, wherein each of the plurality of points includes a geographic location and a heading; performing a first translation on the plurality of points in the probe data in a predetermined direction orthogonal to the corresponding heading at a first radius distance; performing a second translation on the plurality of points in the probe data in the predetermined direction orthogonal to the corresponding heading at a second radius distance; performing an analysis on the plurality of points in a grid according to the heading; and selecting the first radius distance or the second radius for a roundabout based on the analysis.
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Specification