Method for detecting bridges using lidar point cloud data
US8798372B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2012 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/182
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Described is a system and method for detecting elevated structures, such as bridges and overpasses, in point cloud data. A set of data from a three-dimensional point cloud of a landscape is received by the system. The set of data points comprises inlier data points and outlier data points. The inlier data points in the three-dimensional point cloud data are identified and combined into at least one segment. The segment is converted into an image comprising at least one image level. Each image level is processed with an edge detection algorithm to detect elevated edges. The elevated edges are vectorized to identify an elevated structure of interest in the landscape. The present invention is useful in applications that require three-dimensional sensing systems, such as autonomous navigation and surveillance applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.