1. A photographic image region extracting apparatus comprising: a scanner portion that emits a light to a photographic sheet on which a photographic image is fixed, reads a light reflected from the photographic sheet, and outputs image data including the photographic sheet; a margin deciding portion that decides presence of a margin around the photographic image based on the image data including the photographic sheet; and a photographic image extracting portion that specifies a region the photographic image based on a result of the decision of the margin deciding portion and outputs the specified region of the photographic image.