Method and system for obtaining lane data
US6850841B1 · kind B1 · utility
80Cited by
14References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | May 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for collecting data for a geographic database is disclosed. A plurality of vehicles moving on roads in a geographic region collects data indicating position of the vehicle. For a location on a selected road, the method obtains a cross sectional distribution of the position data. The method identifies a number of steps in the distribution indicating a number of lanes on the selected road and updates the geographic database with data indicating the number of lanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.