An image combination device acquires a first object image, a second object image, and a background image by first object image acquiring section (1), second object image acquiring section (3), and background image acquiring section (2) and by using one of the three images as a standard image, generates two corrected images by background correction amount calculating section (4) and corrected image generating section (5), so that background portions of the two images correspond. Superimposed image generating section (9) generates an image by superimposing the standard image and one or two of the corrected images. According to this arrangement, since the backgrounds of the superimposed images correspond to each other, the first object and the second object, which have been photographed separately, can be combined without causing an impression that these objects are combined to the background artificially.