Methods and systems for generating and using a road friction estimate based on camera image signal processing
US10706294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 2018 |
| Grant date | Jul 7, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30252
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for generating and utilizing a road friction estimate (RFE) indicating the expected friction level between a road surface and the tires of a vehicle based on forward looking camera image signal processing. A forward-looking camera image is pre-processed, patch segmented (both laterally and longitudinally, as defined by wheel tracks or the like), transformed into a bird's eye view (BEV) image using perspective transformation, patch quantized, and finally classified. The resulting RFE may be used to provide driver information, automatically control the associated vehicle's motion, and/or inform a cloud-based alert service to enhance driver safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.