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Fuzzy method and device for the recognition of geometric shapes in images

  • US 5,870,495 A
  • Filed: 01/11/1996
  • Issued: 02/09/1999
  • Est. Priority Date: 01/13/1995
  • Status: Expired due to Term
First Claim
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1. A method for recognizing geometric shapes in images comprising the steps of:

  • recognizing at least one edge of a curve of an image;

    recognizing a gradient of the at least one edge;

    correcting the gradient using a first fuzzy logic process to determine the curve;

    calculating a radius that is related to the at least one edge after the step of correcting the gradient; and

    determining a number of points belonging to the curve using a second fuzzy logic process;

    wherein the step of determining the number of points includes steps ofincrementing a value at a main memory location corresponding to the corrected gradient and the calculated radius, the value at the main memory location representing the number of points, andincrementing values at additional memory locations related to the main memory location, the step of incrementing the values at the additional memory locations including a step of assigning a respective weight by which each value is incremented for each of the additional memory locations.

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