In an object recognition unit, a high-illuminance direction acquisition unit acquires, as a high-illuminance direction range, a range of at least one high-illuminance direction. The at least one high-illuminance direction is a direction in which an intensity of light received by a light-receiving unit when reflected waves are not being received by the light-receiving unit is equal to or greater than a predetermined threshold value. A correction unit corrects a recognition region of an object such that, as viewed from a vehicle, a corrected recognition region of the object includes at least part of the high-illuminance direction range on condition that the recognition region of the object and the high-illuminance direction range have a predetermined positional relationship therebetween.