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Adaptive vision system using dual thresholding

  • US 5,982,944 A
  • Filed: 12/16/1997
  • Issued: 11/09/1999
  • Est. Priority Date: 09/27/1991
  • Status: Expired due to Fees
First Claim
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1. A method of identifying at least one valid object having at least one predetermined attribute value in a background, comprising the steps of:

  • (a) generating an image of the object and the background;

    (b) defining a data space representative of the image;

    (c) generating a list of ordered threshold pairs;

    (d) subdividing the data space into a plurality of sub-spaces by using the threshold pairs;

    (e) selecting at least one sub-space;

    (f) searching the image multiple times using each selected sub-space for at least one representation of a candidate object, wherein the candidate object has at least one predetermined attribute value; and

    (g) validating the candidate object having the predetermined attribute value to identify the at least one valid object.

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