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Eye open/close detection through correlation

  • US 6,571,002 B1
  • Filed: 11/09/1999
  • Issued: 05/27/2003
  • Est. Priority Date: 05/13/1999
  • Status: Expired due to Fees
First Claim
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1. A face-image processing apparatus comprising:

  • image input means to which an image of the face photographed by a camera is input;

    eye-image extracting means for extracting a binarized image of an eye from the image of the face input by said image input means;

    coordinate rotating means for rotating coordinates of the image of the eye extracted by said eye-image extracting means for a predetermined angle;

    correlation calculating means for calculating correlation by using the image of the eye rotated by said coordinate rotating means; and

    opening/closing determining means for determining opening/closing of the eye in accordance with a correlation coefficient obtained by the calculation performed by said correlation calculating means.

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