A method and apparatus for classifying eye opening data of at least one eye of an occupant of a vehicle and method and apparatus for detecting drowsiness and / or instantaneous sleep of an occupant of a vehicle

摘要

The invention relates to a method for classifying eye opening data (208) of at least one eye (202, 242) of a vehicle occupant (104) for drowsiness detection and / or second sleep detection of the occupant (104). The method comprises a step of generating a first eye opening data set (220) at a first measurement time in a sliding time window, the first eye opening data set (220) having at least one measurement point (222) having a first eye opening degree and / or a first eyelid movement velocity and / or a first eyelid motion acceleration of the eye (202, 242) of the occupant (104) at the first measurement time, a step of detecting a second eye opening data set (228) at a second measurement time in the sliding time window, the second eye opening data set (228) including at least one detection point (230) representing a second eye opening degree and / or a second eyelid movement speed and / or a second eyelid movement acceleration of the eye (202, 242) of the occupant (104) at the second measurement time, and a step of performing cluster analysis using the at least one measurement point (222) and the at least one detection point (230) to associate at least the first eye opening data set (220) and / or second eye opening data set (228) with a first data cluster (236) to classify the eye opening data (208), wherein the first data cluster (236) represents an opening state of the eye (202, 242) of the occupant (104).