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Iris identification system and method using mobile device with stereo camera

  • US 8,085,994 B2
  • Filed: 01/08/2007
  • Issued: 12/27/2011
  • Est. Priority Date: 01/08/2005
  • Status: Expired due to Fees
First Claim
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1. An iris recognition system using a mobile device including a stereo camera, a digital camera chip and a video input unit, the mobile device being operated in cooperation with an iris image registered and stored in other mobile devices, a remote server or a security device, the iris recognition system comprising:

  • the stereo camera including a single-focus lens having a long depth of focus, for taking a picture of the face and iris of a user to acquire a stereo image;

    a means for converting the stereo image acquired by the stereo camera into a digital signal and calculating the distance between the stereo camera and the iris;

    a means for determining whether the stereo image is out of focus and whether the position of the iris is out of a photographing range of the stereo camera using the calculated distance and judging whether the stereo image is suitable for personal identification; and

    a means for extracting an iris region from the stereo image and obtaining an image having a normalized size using polar coordinate conversion and interpolation methods.

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