1. A method comprising using a computer to perform the steps of: reading area data and attribute data from a non-contact memory attached to an original document, the area data indicating an area of an image display member in which at least one sort of image is displayed, and the attribute data indicating attributes of the at least one sort of image; supplying the area data and the attribute data to an external of the image display member; reading the displayed image; separating the at least one sort of image from the read displayed image on the basis of the supplied area data; and performing an image processing with respect to the separated at least one sort of image in response to the attributes of the at least one sort of image on the basis of the supplied attribute data.