发明名称 Method for embedding auxiliary data in an image, method for reading embedded auxiliary data in an image, and medium personalized by selective exposure to photons
摘要 The invention relates to a method for producing an image with embedded auxiliary data in an image area on a physical media. The method comprises the steps of - determining an altering pattern of sub-sub-pixels to be revealed by altering the state of at least one photon-sensitive layers across the physical media for producing said image in said image area, - modifying the location of the sub-sub-pixels to be revealed of at least some areas of non-uniform sub-pixels within the altering pattern according to a data coding pattern for embedding said auxiliary data, - altering the state of at least one of the at least one photon-sensitive layers according to said modified altering pattern across the physical media thereby selectively revealing a selected subset of sub-sub-pixels.
申请公布号 EP2747406(A1) 申请公布日期 2014.06.25
申请号 EP20120306661 申请日期 2012.12.21
申请人 GEMALTO SA 发明人 LESUR, JEAN-LUC
分类号 H04N1/32 主分类号 H04N1/32
代理机构 代理人
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