1. An image correction apparatus comprising: an identification data memory storing, with regard to one or each of a plurality of light-source types, data representing a type of characteristic quantity that takes on values in which values obtained based upon an image that has been acquired by taking a picture under a light source of one light-source type and values obtained based upon an image that has been acquired by taking a picture under a light source of another light-source type are distinguished from each other; a photographic light-source discriminating device for discriminating, based upon a characteristic quantity that is calculated based upon the data representing the type of characteristic quantity regarding one or each of the plurality of light-source types stored in said identification data memory, under which light source among a predetermined one or plurality of light-source types an image represented by applied image data has been captured; and an image correcting device for subjecting the image data to white-balance adjustment processing that corresponds to the photographic light-source type discriminated by said photographic light-source discriminating device.