Insertion and extraction of a message in an image

Details Insertion and extraction of a message in an image Insertion and extraction of a message in an image

2008-07-08

2008-07-08

Kim, Charles (Department: 2624)

Image analysis

Applications

C380S054000, C713S176000, C358S003280

Reexamination Certificate

active

07397928

ABSTRACT:
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.

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