An image display method in which a position of a shot image of the ground surface having been taken from the air is specified three-dimensionally, a photographic area on the ground surface having been shot is obtained by computation, and a shot image is transformed in conformity with the photographic area thereof and thereafter displayed being superposed on a map of geographic information system, and in which landmarks are extracted from a map of a geographic information system and a shot image respectively, and the corresponding landmarks are compared, whereby a parameter for use in computing a photographic area having been shot is compensated.