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Method and apparatus for contextual data enhancement

  • US 5,187,747 A
  • Filed: 10/04/1989
  • Issued: 02/16/1993
  • Est. Priority Date: 01/07/1986
  • Status: Expired due to Term
First Claim
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1. A method of enhancing intensity data for each of a plurality of data elements in an N×

  • M matrix of data elements each including data representative of an intensity within a range of intensities and data representative of a feature flow direction or "no direction," comprising the steps of;

    forming an I×

    I intensity enhancement window of data elements within the N×

    M matrix, with I<

    N, I<

    M, and having a center data element,determining the mean of the intensity values of the intensity data for the data elements within the scan window;

    selecting a plurality of data elements within the intensity enhancement scan window defining a direction slit having the direction represented by the feature flow direction data of the center data element;

    modifying the intensity value of the intensity data of the center data element according to the relationship of the intensity data of each data element in the direction slit to the mean, and the relationship of the direction represented by the direction data in each data element in the direction slit to the direction represented by the direction data of the center data element.

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