Methods and apparatuses for half-face detection
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United States of America
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Nov 5, 2013
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N/A
app pub date -
Jun 28, 2010
filing date -
Jun 28, 2010
priority date (Note) -
Withdrawn
status (Latency Note)
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Abstract
Classifier chains are used to determine quickly and accurately if a window or sub-window of an image contains a right face, a left face, a full face, or does not contain a face. After acquiring a digital image, an integral image is calculated based on the acquired digital image. Left-face classifiers are applied to the integral image to determine the probability that the window contains a left face. Right-face classifiers are applied to the integral image to determine the probability that the window contains a right face. If the probability of the window containing a right face and a left face are both greater than threshold values, then it is determined that the window contains a full face. Alternatively, if only one of the probabilities exceeds a threshold value, then it may be determined that the window contains only a left face or a right face.
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Family
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