Adaptive background image updating
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United States of America Patent
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-
May 29, 2007
Grant Date -
Dec 2, 2004
app pub date -
May 21, 2003
filing date -
May 21, 2003
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method compares a background image to input images to determine a similarity scores .lamda. for each input image. Then, the background image is updated only if the similarity score for a particular image is less than a predetermined threshold. Presumably, any pixel whose color does not change is part of a static background, and any pixel that does change is part of a moving object. The similarity score controls when input images are scored and the manner the background image is updated.
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