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Method for producing a standard pattern for pattern matching

  • US 4,783,831 A
  • Filed: 09/19/1985
  • Issued: 11/08/1988
  • Est. Priority Date: 09/19/1984
  • Status: Expired due to Term
First Claim
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1. A method of producing a standard pattern comprising:

  • successively selecting and storing in a memory of plurality of local patterns different in position and equal in size to a standard pattern to be obtained from an image of an object being examined;

    obtaining a distribution of pattern detail in picture elements constituting each local pattern; and

    chosing a standard pattern from said plurality of local patterns which has a distribution of pattern detail in picture elements most closely in conformity with a predetermined distribution of pattern detail.

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