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Identification system employing verification of fingerprints

  • US 4,944,021 A
  • Filed: 10/06/1989
  • Issued: 07/24/1990
  • Est. Priority Date: 04/18/1984
  • Status: Expired due to Term
First Claim
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1. An identification system comprising:

  • input means for collecting a streaked pattern of a fingerprint from a surface of a finger to store a streaked pattern image;

    storing means for storing a plurality of pattern features of a plurality of registered fingerprints, each of said pattern features including at least information identifying within a coordinate system the positions of first and second registered feature points and a registered number of streaks of said registered fingerprints existing between said first and second registered feature points;

    selecting means for selecting one of said pattern features as a reference pattern feature from said storing means; and

    identifying means for verifying correspondence between said streaked pattern image and said reference pattern feature, said identifying means determining at least on the basis of coordinate values first and second objective areas in said streaked pattern image at positions corresponding to said positions of said first and second registered feature points of said reference pattern feature, respectively, scanning said first and second objective areas in order to detect first and second candidate feature points, respectively, counting a number of streaks of said streaked pattern image existing between said first and second candidate feature points to generate a count value, and comparing said count value with said registered number.

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