To provide an image generation apparatus and an image generation program for generating an image on the basis of information obtained from a plurality of imaging parts, configured to support parking a vehicle and to be used as a drive recorder.

In an image display system 1, an image processing part 10 generates a display image to be displayed on a display part 41 from at least some of a plurality of images by using a function of a display image generation part 23, and generates a recording image different from the display image from at least some of the images by using a function of a recording image synthesis part 24. The image display system 1 generates the display image and the recording image separately, thereby supporting parking a vehicle using the display image, and recording the recording image on a drive recorder. The image display system 1 can support parking a vehicle and can be used as a drive recorder.