Eyeglass detection method
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United States of America Patent
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May 13, 2008
Grant Date -
Dec 20, 2007
app pub date -
Jun 14, 2006
filing date -
Jun 14, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The presence of eyeglasses worn by a human subject is detected regardless of whether the subject's head is viewed frontally or in profile. Image data within search windows defined relative to the subject's eye is processed to form linear representations of edge boundaries. Angles formed by intersections of the linear representations are determined and used as a basis for determining if eyeglass lenses are present. When prescribed eyeglass components are detected, the eye detection and tracking routines are configured accordingly.
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