Wide-angle imaging data obtained by capturing a view of a vehicle periphery can be converted into wide-angle display data for displaying the view in the same field of view on a display device, and into enlarged display data for enlarging and displaying a portion of the wide-angle imaging data. When the image on the screen of the display is switched between wide-angle display and enlarged display, the target region corresponding to the post-switching display data is set, highlighted, and displayed as the highlighted region (E) on the screen on the pre-switching display data (V1). The surface area of the highlighted region (E) is varied until the surface area highlighted region (E) is the same as the surface area of the target region on the post-switching display data. Lastly, the post-switching display data is displayed in the highlighted region (E).