Friction Estimation using Front-Camera Image Signal Processing
Patent, 2020
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.
Image processing, road friction, machine-learning, front looking camera, vehicle safety
Inventor
Mats Jonasson
Chalmers, Mechanics and Maritime Sciences (M2), Vehicle Engineering and Autonomous Systems
Sohini Roy Chowdhury
Volvo Cars
Minming Zhao
Volvo Cars
Ellen Ohlsson
Volvo Cars
Volvo Cars
10,706,294
19170536.7-1207
Subject Categories
Vehicle Engineering
Computer Vision and Robotics (Autonomous Systems)