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Local watershed operators for image segmentation

  • US 7,327,880 B2
  • Filed: 09/27/2004
  • Issued: 02/05/2008
  • Est. Priority Date: 03/12/2004
  • Status: Active Grant
First Claim
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1. A method of segmenting an image, comprising:

  • determining a gradient of the image to form a gradient image;

    forming a first layer by obtaining a user-selected region of interest in the gradient image;

    forming a plurality of second layers immediately neighboring the first layer;

    forming a plurality of third layers immediately neighboring the plurality of second layers;

    merging the first layer with one of the plurality of second layers using a merging criteria to form a merged first layer;

    performing a filling process starting from neighbors of the plurality of third layers; and

    partitioning a plateau located between at least two of the first layer, the second layer and the third layer, comprising;

    given a pixel Pi visiting its neighboring pixel Pj, computing a distance value at Pj

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