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EDGE DETECTION IN ULTRASOUND IMAGES

  • US 20090080738A1
  • Filed: 02/08/2008
  • Published: 03/26/2009
  • Est. Priority Date: 05/01/2007
  • Status: Abandoned Application
First Claim
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1. A computer-assisted method for defining structures on images, comprising the steps of:

  • acquiring an image of a target structure for edge detection thereof;

    establishing a seed point within said structure on said image;

    detecting an edge in said image so as to generate a partially processed image of said structure having a computed edge indicated thereon;

    extending a plurality of rays radially from said seed point to intersect said computed edge at respective intersection points;

    connecting said intersection points to form an initial closed contour having respective segments connecting neighboring ones of said intersection points;

    computing deforming force gradients in an area of interest of said image;

    deforming said closed contour responsively to said deforming force gradients to define a deformed closed contour; and

    deleting ones of said segments from said deformed closed contour that meet a predefined undesirability criterion.

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