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Fingerprint image input device and living body identification method using fingerprint image

  • US 20030044051A1
  • Filed: 08/22/2002
  • Published: 03/06/2003
  • Est. Priority Date: 08/31/2001
  • Status: Active Grant
First Claim
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1. A fingerprint image input device comprising:

  • an image input unit for sequentially acquiring a plurality of fingerprint images of a finger pressed against a detector surface;

    a color detection unit for detecting a color of said finger in synchronization with input of said plurality of fingerprint images;

    a pressure detection unit for detecting a physical quantity reflecting a pressure applied by said finger to said detector surface when said plurality of fingerprint images are acquired; and

    a determination unit for determining whether said finger is a live or dead one by analyzing a correlation between said physical quantity and the color of said finger.

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