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


Mats Jonasson

Chalmers, Mekanik och maritima vetenskaper, Fordonsteknik och autonoma system

Sohini Roy Chowdhury

Volvo Cars

Minming Zhao

Volvo Cars

Ellen Ohlsson

Volvo Cars

Volvo Cars





Datorseende och robotik (autonoma system)

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