An image pickup device of the present invention includes an image pickup unit that captures a video image, a mask area determination unit that determines a mask area, for which processing for detection of a characteristic part of a target is excluded, among a portion or the entirety of an area of image data of the video image captured by the image pickup unit, and a characteristic part detector that performs the detection processing of the characteristic part of the target on a detection target area obtained by excluding the mask area determined by the mask area determination unit from the portion or the entirety of the area of the image data of the video image captured by the image pickup unit.