1. A method for automatic image-property identification for an object placed on top of a sheet table of an image reading apparatus comprising the steps of: storing a plurality of frame types and their associated image properties in a template; reading the boundary information of said object; reading the predetermined pixels on the horizontal edge and the vertical edge of said object when said boundary information shows non-solid bands; determining that said object is circumscribed with an informative frame for multiple sheets when the features of said boundary information is correspondent to the predetermined features for multiple sheets; reading the predetermined pixels on the intersection of the diagonals of said sheet when said features are not correspondent to the predetermined features for multiple sheets; determining that said object is circumscribed with a predetermined frame type for a single sheet when the features of said predetermined pixels are correspondent to the predetermined features for a single sheet; determining that said object is not circumscribed with a predetermined frame type when the features of said predetermined pixels are not correspondent to the predetermined features for a single sheet; reading the image properties of said object from said template according to said predetermined frame type; and reading the image information of said object according to said image properties.