PERIPHERY SURVEILLANCE APPARATUS AND PROGRAM

A periphery surveillance apparatus (100) includes: a storage section (14f) storing captured image data from a capturing section (16) capturing an image of a region including a road surface and a region upward therefrom, in a traveling direction of a vehicle (1); a display section (11) selectively displaying at least one of past and present images, the past image based on captured image data corresponding to a current underfloor area among captured image data stored in the storage section, and the present image based on new captured image data captured and output by the capturing section; and a control section (14) performing switching to the past image when a permission condition for permitting display of the past image is established during displaying the present image and performing switching to the present image when a recovery condition for performing recovery to the present image is established during displaying the past image.