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Imprint identification system

  • US 6,181,804 B1
  • Filed: 07/14/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 01/31/1996
  • Status: Expired due to Fees
First Claim
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1. A method of imprint identification which comprises:

  • producing, with a predetermined reproduction ratio, a digital image of an imprint produced by an article;

    displaying said image on a computer screen;

    recording in computer memory the co-ordinates of any unique identification features in said image caused by defects in said article;

    storing the set of co-ordinates thereby produced in a database together with sets of co-ordinates similarly taken from other images; and

    comparing said sets of co-ordinates to identify similar sets of co-ordinates likely to originate from the same article.

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