发明名称 |
Including a metric in a digital watermark for media authentication |
摘要 |
A method is provided for authenticating a media signal and related software, systems and applications. A digital watermark is embedded in the media signal. A metric is calculated for the digital watermark as embedded in the media signal. The resulting metric is then embedded in the media signal with the digital watermark. To detect a potential alteration, a detector computes the metric for a potentially corrupted version of the embedded media signal. The detector then compares its computed metric to the embedded metric to detect whether the alteration has occurred.
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申请公布号 |
US2002157005(A1) |
申请公布日期 |
2002.10.24 |
申请号 |
US20010045654 |
申请日期 |
2001.10.26 |
申请人 |
BRUNK HUGH L.;BRADLEY BRETT ALAN;HANNIGAN BRETT T. |
发明人 |
BRUNK HUGH L.;BRADLEY BRETT ALAN;HANNIGAN BRETT T. |
分类号 |
G06T1/00;H04N17/00;(IPC1-7):H04L9/00 |
主分类号 |
G06T1/00 |
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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