Method and apparatus for shot detection
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United States of America Patent
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-
Oct 28, 2008
Grant Date -
Feb 3, 2005
app pub date -
Aug 31, 2004
filing date -
Jun 14, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A system identifies an abrupt transition in content between two frames, and determines whether the abrupt transition was caused by a shot boundary between the two frames or by a flashlight event. Identification of the abrupt transition in content includes calculating a difference in light intensity histograms between the current frame and a preceding frame, and comparing the histogram difference to a dynamically determined threshold. Further, an average light intensity based method is used to determine whether the abrupt transition was caused by a shot boundary or by a flashlight event.
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