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Fingerprint security systems in handheld electronic devices and methods therefor

  • US 20040125993A1
  • Filed: 12/30/2002
  • Published: 07/01/2004
  • Est. Priority Date: 12/30/2002
  • Status: Abandoned Application
First Claim
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4. A fingerprint information processing method, comprising:

  • capturing a fingerprint image having a plurality of pixels with corresponding intensity values;

    increasing a range of intensity values of the fingerprint image pixels;

    enhancing the fingerprint image having the increased range of intensity values;

    identifying minutiae of the enhanced fingerprint image.

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