发明名称 |
System and method for extracting a watermark signal in a digital image sequence |
摘要 |
<p>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.</p> |
申请公布号 |
EP1286304(A2) |
申请公布日期 |
2003.02.26 |
申请号 |
EP20020078048 |
申请日期 |
2002.07.25 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
FIELDING, GABRIEL;JONES, PAUL WILLIAM |
分类号 |
H04N5/91;G06T1/00;H04N7/08;H04N7/081;(IPC1-7):G06T1/00 |
主分类号 |
H04N5/91 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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