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MARKER-FREE TRACKING REGISTRATION AND CALIBRATION FOR EM-TRACKED ENDOSCOPIC SYSTEM

  • US 20120069167A1
  • Filed: 04/02/2010
  • Published: 03/22/2012
  • Est. Priority Date: 05/18/2009
  • Status: Abandoned Application
First Claim
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1. A method for image-based registration between images, comprising:

  • locating (304) a feature in a pre-operative image;

    comparing (307) real-time images taken with a tracked scope with the pre-operative image taken of the feature to find a real-time image that closely matches the pre-operative image; and

    registering (308) a closest match real-time image to the pre-operative image to determine a transformation matrix between a position of the pre-operative image and a position of the real-time image provided by a tracker such that the transformation matrix permits tracking real-time image coordinates using the tracker in pre-operative image space.

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