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Approaches and apparatus for eye detection in a digital image

  • US 8,090,157 B2
  • Filed: 02/07/2007
  • Issued: 01/03/2012
  • Est. Priority Date: 01/26/2005
  • Status: Active Grant
First Claim
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1. A computer implemented eye detection system for detecting eyes in a digital image, the system comprising:

  • a digital image capture device; and

    a processor, the processor including;

    a filter;

    a first eye candidate selector connected to the filter;

    a first profile validator connected to the eye candidate selector, the first profile validator including measurements of eye candidate pupil contours;

    a first eye candidate eliminator connected to the first profile validator and the first eye candidate selector;

    a second eye candidate selector connected to the first profile validator;

    a pair validator connected to the second eye candidate selector, the pair validator including a space measurer that determines if the first and second eye candidates are at an appropriate distance from each other;

    a second profile validator connected to the pair validator; and

    a second eye candidate eliminator connected to the second profile validator and the second eye candidate selector;

    wherein the first profile validator comprising a first profiler connected to the first eye candidate selector, and a first profile evaluator connected to the first profiler, the first eye candidate eliminator and the second eye candidate selector;

    wherein the second profile validator comprises a second profiler connected to the pair validator, and a second profile evaluator connected to the second profiler and the second eye candidate eliminator;

    wherein the first profiler comprises;

    a pupil region extractor connected to the first eye candidate selector;

    an adaptive thresholder connected to the pupil region extractor;

    a contours finder connected to the adaptive thresholder;

    a contour picker connected to the contours finder;

    a curve fitter connected to the contour picker; and

    a curve selector connected to the curve fitter and the first profile evaluator; and

    wherein the second profiler comprises;

    a pupil region extractor connected to the pair validator;

    an adaptive thresholder connected to the pupil region extractor;

    a contours finder connected to the adaptive thresholder;

    a contour picker connected to the contours finder;

    a curve fitter connected to the contour picker; and

    a curve selector connected to the curve fitter and the second profile evaluator.

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