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Image based multi-biometric system and method

  • US 7,697,735 B2
  • Filed: 06/21/2005
  • Issued: 04/13/2010
  • Est. Priority Date: 06/21/2004
  • Status: Active Grant
First Claim
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1. A face recognition method, the method performed by a computer and comprising:

  • selecting a single image of a face;

    locating facial features in the single image;

    determining whether a plurality of the located facial features lie within a plane;

    responsive at least in part to determining whether the plurality of the located facial features lie within a plane, determining whether the single image represents a recorded image of an individual;

    responsive at least in part to determining that the single image does not represent a recorded image of an individual;

    comparing facial features located in the single image with facial features of a reference image;

    comparing iris features in the single image with iris features in the reference image;

    comparing skin characteristics in the single image with skin characteristics in the reference image, the comparison of skin characteristics comprising;

    locating skin areas in the face suitable for skin texture analysis;

    responsive to locating the facial features, detecting deformation of the located skin areas;

    responsive to detecting the deformation, warping, aligning, and normalizing the located skin areas to account for the deformation, resulting in modified skin areas; and

    extracting skin characteristics from the modified skin areas;

    calculating a similarity score between the single image and the reference image based on the facial feature comparison, the iris feature comparison, and the skin characteristics comparison; and

    recognizing the face based at least in part on the calculated similarity score.

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