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Method and apparatus for automatically detecting patterns in digital point-ordered signals

  • US 5,825,672 A
  • Filed: 10/25/1996
  • Issued: 10/20/1998
  • Est. Priority Date: 10/25/1996
  • Status: Expired due to Fees
First Claim
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1. An automated, computer-implemented method for detecting signal information representing a physical feature of a test piece by detecting a pattern in a signal representing data from inspection of the test piece, comprising the steps of:

  • measuring a physical parameter of the test piece;

    generating a digital point-ordered signal representative of the measured physical parameter;

    decomposing the digital point-ordered signal into three components, based on resolution, comprising a coarse resolution baseline signal, a fine resolution background noise signal, and an intermediate resolution peaks/troughs signal;

    locating peaks/troughs from the peaks/troughs signal; and

    outputting peaks/troughs information identifying those signal patterns that indicate the presence of physical features of the test piece.

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