Captured images generated by repeated image capture over time by an image capture device provided on a moving body are acquired, and for each pixel in each of said captured images, a probability indicating to which of multiple different area classes, which have been designated regarding multiple targets appearing in the captured images, the pixel belongs is calculated. Among divisional areas obtained by multiply dividing the captured images in a horizontal direction, a divisional area in which a clarity of a prescribed target among the multiple targets is high, where the probability of belonging to the area class of the prescribed target is equal to or higher than a threshold value, is identified. A clear image is generated by combining the divisional areas in which a display clarity regarding the prescribed target in the captured images is high.