发明名称 |
Watermarking |
摘要 |
<p>A system and method for testing for the presence of a watermark in a picture signal in which the watermark content of the signal is enhances using local mean picture sample values, and then correlated with a watermark signal to provide an estimate of the presence of the watermark. Local mean picture sample values may be derived from reference information received with the picture signal, or may be derived from the received picture signal itself. <IMAGE></p> |
申请公布号 |
EP1460829(A2) |
申请公布日期 |
2004.09.22 |
申请号 |
EP20040010289 |
申请日期 |
2000.03.20 |
申请人 |
BRITISH BROADCASTING CORPORATION |
发明人 |
WERNER, OLIVER;MASON, ANDREW JAMES;SALMON, RICHARD AUBREY |
分类号 |
H04N1/32;H04N7/32;(IPC1-7):H04N1/32 |
主分类号 |
H04N1/32 |
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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