Stop marker recognition apparatus of vehicle drive assist system
US7068154B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 5, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | May 6, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S11/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A particular area extending in a widthwise direction of a vehicle is established in a lower part of a picture image taken by CCD cameras and the area is divided into six small areas. It is judged that a stop marker exists when an average brightness of respective three successive small areas of the six small areas rises from a low level to a high level and then descends from the high level. As a result of recognition of a stop marker, in case where a stop marker exists and there is a solid object immediately ahead of the stop marker, a drive assist system gives a warning to a vehicle operator or a congestion follow-up mode is turned off. Further, in case where a stop marker exists and there is a solid object immediately ahead of the stop marker, while the vehicle is in a standstill, the drive assist system prohibits the vehicle operator from starting the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.