Image authentication system, image authentication

专利名称：Image authentication system, image

authentication method, printed image, andcomputer product

发明人：Chiba, Hirotaka c/o FUJITSU LIMITED,Noda,

Tsugio c/o FUJITSU LIMITED

申请号：EP06116029.7申请日：20060626公开号：EP1835456A1公开日：20070919

专利附图：

摘要：In an image authentication system, a printing unit (10) prepares a code in a form

of an image of a different density in any two adjacent blocks, and prints the code onto arecording medium as a printed image. A storage unit (20) stores therein image datacorresponding to printed images and codes to be embedded in image data

corresponding to the printed images in a correlated manner. An authenticating unit (30)receives scanned image data corresponding to a printed image, extracts a code

embedded in the scanned image data and authenticates the printed image correspondingto the scanned image data based on extracted code.

申请人：FUJITSU LIMITED

地址：1-1, Kamikodanaka 4-chome, Nakahara-ku Kawasaki-shi, Kanagawa 211-8588 JP

国籍：JP

代理机构：Kreutzer, Ulrich

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