Method for obtaining precision road maps
US6510382B2 · kind B2 · utility
14Cited by
7References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 26, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A highly precise digital road map and method of producing same are provided for vehicle applications. The method obtains a conventional digital map having traditional segments and nodes, and represents a road network of the precision digital road map as a set of geometric shapes indexed to the traditional segments and nodes of the conventional digital map. Branch and merge points are identified on the road network by divergences and convergences from ideal paths of the vehicles traveling thereon. These ideal paths are obtained by statistically combining the actual paths of the vehicles traveling between the same points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.