Method and apparatus for recognizing shape of road
US6553283B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Feb 27, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/9329
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transmission wave is applied to a predetermined angular range in a width-wise direction of a vehicle. Object-unit data pieces containing at least data pieces representing distances to objects in correspondence with vehicle-width-wise direction angles are generated on the basis of a reflected wave. A determination is made as to whether each object is moving or stationary on the basis of a speed of the vehicle and a relative speed of the object. From the object-unit data pieces, ones are extracted which are effective for road shape recognition on the basis of a result of determining whether each object is moving or stationary. Ones of the extracted object-unit data pieces which represent monotonically increasing distances as viewed along one of clockwise and counterclockwise angle directions are grouped to generate data representing a road-side-object group. A road edge is recognized on the basis of the data representing the road-side-object group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.