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Method and apparatus for detecting edges of an object

  • US 20060245653A1
  • Filed: 03/14/2006
  • Published: 11/02/2006
  • Est. Priority Date: 03/14/2005
  • Status: Active Grant
First Claim
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1. A method for detecting edges of an object, the method comprising:

  • producing from imagery an image of a scene including said object proximate a platform;

    computing horizontal image derivates of the image, wherein the horizontal image derivates are a rate of change in a gradient of the image;

    integrating column sums of the horizontal image derivatives to create an edge strength plot of the image;

    detecting peaks in the plot corresponding to dominant edges, wherein the dominant edges are potential pairs of left and right edges of the image;

    evaluating all the potential pairs of left and right edges of the image; and

    selecting the potential pair of left and right edges with maximum score, wherein the maximum score is a score with maximum integrated column sum value.

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