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US 9,068,856 B2Granted
Creating geometry for advanced driver assistance systems
AssigneeHERE Global B.V.
InventorsOle Henry Dorum, James D. Lynch, Marianna Gnedin
Life of this patent
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Abstract
A method and system for creating geometry for ADAS are described. Link chains, which are a sequence of segments, are created. The link chains are used to create 2D splines. The link chains, the 2D splines, and height data are used to create 3D splines. The 3D splines and possibly the 2D splines are converted to Bezier curves, which can be used to create a 2D polyline. ADAS applications can use the Bezier curves and the 2D polylines to provide ADAS functions.
Claims20
A method comprising:
- identifying one or more two-dimensional curves for a plurality of segments that represent a portion of a road network;
- calculating, by a processor, a three-dimensional spline curve from the one or more two-dimensional curves and height data;
- and
- storing the three-dimensional spline curve in a database, wherein a driver assistance application is configured to incorporate the three-dimensional spline curve to affect vehicle operation.
1 more element
An apparatus comprising:
- 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:
- identify one or more two-dimensional curves for a plurality of segments that represent a portion of a road network;
- calculate a three-dimensional piecewise curve from the one or more two-dimensional curves and height data;
- and
- store the three-dimensional spline curve in a database, wherein a driver assistance application is configured to access the three-dimensional spline curve to affect vehicle operation.
5 more elements
A method comprising:
- identifying one or more two-dimensional curves for a plurality of segments that represent a portion of a road network;
- calculating, by a processor, a three-dimensional spline curve from the one or more two-dimensional curves and altitude data;
- and
- storing the three-dimensional spline curve in a database, wherein a driver application is configured to incorporate the three-dimensional spline curve into vehicle operation.
1 more element
Dependencies are inferred from the claim text.