发明名称 Insertion and extraction of a message in an image
摘要 The invention concerns a method of inserting a message in an image, the message comprising binary symbols which are each referenced by an index, characterized in that it comprises, for a coefficient (Yn) of the image, the steps of: determining (E9) a watermarked value (Y'n) of the coefficient, according to the binary value (b) of a symbol of the message and according to the index (i) of the symbol, inserting (E11) the watermarked value in place of the value of the coefficient.
申请公布号 US2004146179(A1) 申请公布日期 2004.07.29
申请号 US20030735659 申请日期 2003.12.16
申请人 CANON KABUSHIKI KAISHA 发明人 LE FLOCH HERVE
分类号 G06T1/00;(IPC1-7):G06K9/00 主分类号 G06T1/00
代理机构 代理人
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