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Concepts and results in the development of a hybrid tracking system for CAS

  • Wolfgang Birkfellner
  • Franz Watzinger
  • Felix Wanschitz
  • Georg Enislidis
  • Michael Truppe
  • Rolf Ewers
  • Helmar Bergmann
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1496)

Abstract

We present the design and the results achieved in the development of a hybrid magneto-optic tracking system suitable for computer aided surgery. Our approach towards a reliable and accurate hybrid position sensor system that is not entirely dependent on an unobstructed line-of-sight between sensor assembly and patient is the combined use of an optical tracker with a direct current (DC) pulsed electromagnetic tracking system (EMTS). The proposed hybridization method aims at providing both accurate and uninterrupted position data by overcoming the drawbacks of both tracking technologies. Results presented include the preliminary assessment of algorithms for fusion of position data from both sensor systems, for calibrating the EMTS to the environment and for detecting systematic distortions in the DC tracking system caused by ferromagnetic materials in order to improve the reliability of the proposed system.

Keywords

Light Emit Diode Tracking System Augmented Reality Position Data Distortion Mapping 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Wolfgang Birkfellner
    • 1
  • Franz Watzinger
    • 2
  • Felix Wanschitz
    • 2
  • Georg Enislidis
    • 2
  • Michael Truppe
    • 3
  • Rolf Ewers
    • 2
  • Helmar Bergmann
    • 1
    • 4
  1. 1.Department of Biomedical Engineering and PhysicsUniversity of ViennaAustria
  2. 2.Clinic of Oral and Maxillofacial Surgery, Medical SchoolUniversity of ViennaAustria
  3. 3.ARTMA MedizintechnikVienna
  4. 4.Ludwig-Boltzmann Institute of Nuclear MedicineVienna

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