US 12,269,482 B2
Systems and methods for eye gaze based alertness measurement
Guy Raz, Binyamina (IL); and Robert Steel, Coventry (GB)
Assigned to GENTEX CORPORATION, Zeeland, MI (US)
Filed by Gentex Corporation, Zeeland, MI (US)
Filed on Mar. 15, 2023, as Appl. No. 18/121,613.
Claims priority of provisional application 63/321,157, filed on Mar. 18, 2022.
Prior Publication US 2023/0294706 A1, Sep. 21, 2023
Int. Cl. G08B 23/00 (2006.01); B60W 40/08 (2012.01); B60W 50/14 (2020.01); G06V 20/58 (2022.01); G06V 20/59 (2022.01)
CPC B60W 40/08 (2013.01) [B60W 50/14 (2013.01); G06V 20/58 (2022.01); G06V 20/597 (2022.01); B60W 2040/0818 (2013.01); B60W 2420/403 (2013.01); B60W 2540/225 (2020.02); B60W 2540/229 (2020.02)] 20 Claims
OG exemplary drawing
 
1. A system for monitoring an alertness level of an occupant of a vehicle, the system comprising:
a first sensor operable to detect an event exterior to the vehicle;
a second sensor operable to capture an image of the occupant; and
a controller in electrical communication with the first sensor and the second sensor, the controller configured to:
determine a target direction aligning with a region of the event;
determine a viewing direction of the occupant based on the image;
compare the target direction to the viewing direction;
determine the alertness level of the occupant based on the comparison of the target direction to the viewing direction; and
measure an elapsed time from a first time corresponding to an occurrence of the event to a second time corresponding to the viewing direction meeting the target direction.