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Visual imaging system and method

  • US 5,768,421 A
  • Filed: 09/12/1995
  • Issued: 06/16/1998
  • Est. Priority Date: 09/12/1995
  • Status: Expired due to Term
First Claim
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1. A method for recognizing an object, comprising the steps of:

  • forming a first digital characterization of the object by capturing a first plurality of digital features from the object;

    thereafterstoring said first digital characterization of the object into a memory by writing, responsive to each one said digital features of said first plurality of digital features, a first preselected value into an address location of said memory that is determined from said one digital feature;

    thereafterforming a second digital characterization of a second object by capturing a second plurality of digital features from said second object; and

    thereaftercomparing said second digital characterization to said first digital characterization by reading, for each one digital feature of said second plurality of features, a second plurality of address locations of said memory that are determined from said second plurality of digital features to determine a number of said second plurality of address locations that have said first preselected value; and

    thereafterrecognizing said second object as the object when said number exceeds a threshold value.

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