1. An image processing device comprising: an image obtainer that obtains a multi-view image in which sub-images from viewpoints are aligned; a clipper that clips partial images from the sub-images; a generator that generates a reconstruction image by arranging the partial images based on an alignment position of the sub-images corresponding to the partial images; a distance setter that sets a re-focal length of the reconstruction image; an interval determiner that determines an interval, at which the partial images are arranged on the reconstruction image, according to the re-focal length; and a size determiner that determines a clipping size of the partial images so that the partial images are overlapped on the reconstruction image.