发明名称 |
Method and arrangement for watermark detection |
摘要 |
A graphics card of a computer system is configured to detect watermarks within a video signal that includes one or more windows of a display. The frames of the video signal are analyzed to locate image areas in which the video signal changes, and a bounding box around these areas of change is defined as an area(s) of interest. Watermark detection is then performed within the area(s) of interest.
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申请公布号 |
US7561715(B2) |
申请公布日期 |
2009.07.14 |
申请号 |
US20050525483 |
申请日期 |
2005.02.23 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
TALSTRA JOHAN CORNELIS;OOSTVEEN JOB CORNELIS;LANGELAAR GERRIT CORNELIS;KALKER ANTONIUS ADRIANUS CORNELIS MARIA;MAES MAURICE JEROME JUSTIN JEAN-BAPTISTE |
分类号 |
G06K9/00;H04N7/26;G06T1/00;G11B20/00;H04N1/387;H04N5/76;H04N5/775;H04N5/85;H04N5/913;H04N7/167 |
主分类号 |
G06K9/00 |
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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