METHOD AND APPARATUS FOR ROAD WIDTH ESTIMATION
First Claim
1. A method comprising:
- accessing a point cloud representing terrain;
dividing the point cloud into sections representing portions of the terrain; and
calculating, by a processor, a road width of each of the sections.
2 Assignments
0 Petitions
Accused Products
Abstract
A method, apparatus, and computer program product are disclosed to estimate road widths, irrespective of the presence of curbs or occlusions on the road surface. In the context of a method, a point cloud representing terrain is accessed. In one embodiment, the point cloud may be generated from lidar scanning during a trip. The point cloud is divided into sections representing portions of the terrain. The method further includes, for each section, identifying a ground planar surface of the section, estimating a drive plane of the section based on the ground planar surface and a drive direction, and calculating a road width of the section based on the ground planar surface and drive plane. The method may further include applying a smoothing algorithm to adjust the calculated road width of at least one section. A corresponding apparatus and computer program product are also provided.
25 Citations
21 Claims
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1. A method comprising:
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accessing a point cloud representing terrain; dividing the point cloud into sections representing portions of the terrain; and calculating, by a processor, a road width of each of the sections. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
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access a point cloud representing terrain; divide the point cloud into sections representing portions of the terrain; and calculate a road width of each of the sections. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A computer program product comprising at least one computer-readable storage medium having computer-executable program code portions stored therein, the computer-executable program code portions comprising program code instructions that, when executed, cause an apparatus to:
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access a point cloud representing terrain; divide the point cloud into sections representing portions of the terrain; and calculate a road width of each of the sections. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification