Real-time face tracking in a digital image acquisition device
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United States of America Patent
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Nov 8, 2011
Grant Date -
Oct 22, 2009
app pub date -
Jun 18, 2007
filing date -
Aug 11, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An image processing apparatus for tracking faces in an image stream iteratively receives an acquired image from the image stream including one or more face regions. The acquired image is sub-sampled at a specified resolution to provide a sub-sampled image. An integral image is then calculated for a least a portion of the sub-sampled image. Fixed size face detection is applied to at least a portion of the integral image to provide a set of candidate face regions. Responsive to the set of candidate face regions produced and any previously detected candidate face regions, the resolution is adjusted for sub-sampling a subsequent acquired image.
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Family
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Cited Art Landscape
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