Image analysis – Applications
Reexamination Certificate
2007-04-10
2007-04-10
Wu, Jingge (Department: 2624)
Image analysis
Applications
C713S176000, C382S221000
Reexamination Certificate
active
09923583
ABSTRACT:
A method for extracting a watermark signal contained in a watermarked digital image sequence having two or more frames, including the steps of estimating correspondences between one or more pairs of frames in the watermarked digital image sequence; computing a displaced frame difference for one or more frames in the watermarked digital image sequence using the correspondences; and extracting the watermark signal from one or more displaced frame differences.
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Fielding Gabriel
Jones Paul W.
Patel Shefali
Watkins Peyton C.
Wu Jingge
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