System for analyzing eye responses to automatically determine impairment of a subject
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United States of America Patent
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Nov 10, 2009
Grant Date -
May 7, 2009
app pub date -
Nov 2, 2007
filing date -
Nov 2, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The impairment determination system automatically determines impairment of a subject based on pupil movement, as well as pupil responses to illumination and target tracking for either eye or both eyes simultaneously. The impairment determination system automatically processes a series of digital image frames, taken during the execution of a predetermined test protocol, to determine pupil location, size, and responsiveness to changes in illumination, which data are used by the impairment determination system to determine impairment of the subject. The present impairment determination system uses a method for quickly and accurately localizing the subject's pupils, as well as their boundaries, area, and center coordinates, which data is used as part of the impairment determination process.
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