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Visual attention system

  • US 20020081033A1
  • Filed: 10/16/2001
  • Published: 06/27/2002
  • Est. Priority Date: 02/17/2000
  • Status: Active Grant
First Claim
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1. A method of processing a visual image, for identifying areas of visual attention, comprising the steps of:

  • storing an image as an array of pixels, each pixel having a value;

    selecting test pixels from the array, for each test pixel, selecting one or more neighbour groups of pixels neighbouring the test pixel;

    selecting comparison pixels from the array;

    identifying a group of pixels neighbouring a selected comparison pixel having the same respective positional relationships to the comparison pixel as a selected neighbour group of pixels has to the test pixel;

    comparing the values of the selected neighbour group with the values of the identified group in accordance with a predetermined match criterion, and generating a measure of visual attention for each test pixel, in dependence upon the number of comparisons made for that test pixel for which the comparison results in a mismatch.

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