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Automated method and system for the alignment and correlation of images from two different modalities

  • US 5,974,165 A
  • Filed: 09/05/1995
  • Issued: 10/26/1999
  • Est. Priority Date: 11/30/1993
  • Status: Expired due to Term
First Claim
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1. A method of correlating images from two modalities, comprising:

  • obtaining a first image containing an anatomic feature using a first modality;

    obtaining a second image containing said anatomic feature using a second modality;

    detecting a first feature contour of said anatomic feature in said first image iteratively using estimated contours derived using a plurality of successive gray-level thresholding operations at a respective plurality of gray-level thresholds, including;

    thresholding said first image using one of said plurality of gray-level thresholds,determining whether to alter pixels in said first image, andthresholding said first image using a subsequent one of said gray-level thresholds after said determining step;

    detecting a second feature contour of said anatomic feature in said second image; and

    superposing said first feature contour and said second feature contour.

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