A control device of present invention includes a display control portion that performs control such that a whole image display region, in which a whole image captured by a camera is displayed, and an enlarged image display region, in which a region corresponding to a position specified on the whole image is enlarged and an enlarged image is displayed, are displayed, and a control portion that performs control such that the region corresponding to the position specified on the whole image is changed. The region includes at least one preset region, and the display control portion displays, on the whole image, a section that corresponds to the preset region.