vigilance assessment device, device to support automatic driving and vigilance assessment procedure

摘要

In the case of the vigilance grading device (10), the portrait acquisition component (11) acquires a portrait which is a picture taken from the face of a vehicle occupant. The upper limb opening-degree calculation component (12) calculates the opening-degree of the upper limb on the basis of a position of the inner eye angle determined from the portrait, the position of the outer eye angle and the position of the highest point of the upper limb. If the opening of the upper lip is less than a specified threshold,assesses the downward-view assessment component (13) based on the position of the highest point of the upper limb determined from the portrait and the position of the intersection point of the contour line of the lower limb and the lot falling from the highest point of the upper limb, whether the occupant is in a downward-view state. The vigilance grading component (14) of the vigilance grading device (10) estimates a decrease in the wakefulness of an occupant when the opening gradient of the upper lip is less than a threshold value, and furthermore it has been established that the occupant is not in a downward position.