Real-time face tracking in a digital image acquisition device
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United States of America Patent
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Dec 2, 2008
Grant Date -
Feb 14, 2008
app pub date -
Jun 19, 2007
filing date -
Aug 11, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
An image processing apparatus for tracking faces in an image stream iteratively receives a new acquired image from the image stream, the image potentially including one or more face regions. The acquired image is sub-sampled (112) 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 (20) 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 at which a next acquired image is sub-sampled is adjusted.
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Family
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Cited Art Landscape
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