To provide a dominant eye determination device which can properly determinate a dominant eye of a driver of a vehicle.SOLUTION: A dominant eye determination device 1 comprises: a driver information acquisition part 11 for acquiring a driver's face orientation D, a right eye visual line direction D, and a left eye visual line direction D; an angle acquisition part 12 for acquiring a right eye angle θbeing an angle formed of the right eye visual line direction Dand a driver's front face direction D, and a left eye angle θbeing an angle formed of the left eye visual line direction Dand the front face direction D; a condition sufficiency determination part 13 for determining whether or not a condition sufficiency state is continued for a determination period; and a dominant eye determination part 14 for comparing a right eye front face time at which the right eye angle θis smaller than the left eye angle θ, and a left eye front face time at which the left eye angle θis smaller than the right eye angle θduring the determination period when it is determined that the condition sufficiency state is continued for the determination period, determining that a right eye R is a dominant eye when the right eye front face time is longer, and determining that a left eye L is a dominant eye when the left eye front face time is longer.SELECTED DRAWING: Figure 1
展开▼
