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Document fingerprinting

  • US 9,350,552 B2
  • Filed: 05/29/2014
  • Issued: 05/24/2016
  • Est. Priority Date: 03/02/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • capturing a first digital image of a physical object;

    parsing the digital image into at least one region of interest;

    extracting identifying information from the region of interest, the identifying information including at least one feature of the region of interest;

    combining the at least one feature for each region of interest to form a digital fingerprint of the object;

    storing the digital fingerprint in a database, wherein the database comprises a plurality of digital fingerprints each associated with a corresponding physical object;

    subsequently, obtaining a second digital image of a second physical object;

    parsing the second image into at least one region of interest of the second object;

    extracting identifying information from the region of interest, the identifying information including at least one feature of the region of interest of the second object;

    combining the at least one feature for each region of interest to form a digital fingerprint of the second object;

    comparing the digital fingerprint of the second object to the digital fingerprints stored in the database; and

    responsive to the comparison, return an indication as to whether the second object is the first object.

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