Method and arrangement for watermark detection
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United States of America Patent
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Jul 14, 2009
Grant Date -
Jun 15, 2006
app pub date -
Aug 12, 2003
filing date -
Aug 28, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
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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