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Method of multi-resolution adaptive correlation processing

  • US 20040062420A1
  • Filed: 09/15/2003
  • Published: 04/01/2004
  • Est. Priority Date: 09/16/2002
  • Status: Active Grant
First Claim
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1. A method of processing at least first and second images of an image flow of an object to determine a relative displacement of elements of the image flow over a predetermined time interval, the method comprising:

  • (a) recording a first array of pixel values associated with the first image of the image flow;

    (b) recording a second array of pixel values associated with the second image of the image flow;

    (c) defining a first plurality of interrogation regions on each of the first and second arrays of pixel values of the image flow and each of the first plurality of interrogation regions including a first minimal pixel resolution;

    (d) processing a first interrogation region from each of the first plurality of interrogation regions located on each of the first and second arrays of pixel values to provide a first correlation plane including a first plurality of signal values;

    (e) detecting a first predetermined signal value from the first plurality of signal values associated with the first correlation plane; and

    (f) determining a direction and magnitude of the first predetermined signal value located on the first correlation plane which represents the relative displacement of elements of the image flow over the predetermined time interval.

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