Advertisement

Virtual Colon Flattening

  • A. Vilanova Bartrolí
  • R. Wegenkittl
  • A. König
  • E. Gröller
  • E. Sorantin
Part of the Eurographics book series (EUROGRAPH)

Abstract

We present a new method to visualize virtual endoscopic views. We propose to flatten the organ by the direct projection of the surface onto a set of cylinders. Two sampling strategies are presented and the introduced distortions are studied. A non-photorealistic technique is presented to enhance the perception of the images. Finally, an approximate but real-time endoscopic fly-through is possible by using the data obtained by the projection technique.

Keywords

Depth Image Level Line Central Path Camera Position Virtual Colonoscopy 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L. Hong, S. Muraki, A. Kaufman, D. Bartz, and T. He. Virtual voyage: Interactive navigation in the human colon. In SIGGRAPH 97 Conference Proceedings, Annual Conference series, pages 27–34. ACM SIGGRAPH, Addison Wesley, August 1997.Google Scholar
  2. 2.
    M. Wan, Q. Tang, A. Kaufman, Z. Liang, and M. Wax. Volume rendering based interactive navigation within the human colon. In IEEE Visualization’ 99, pages 397–400. IEEE, nov 1999.Google Scholar
  3. 3.
    A. Vilanova, A. König, and E. Gröller. VirEn: A virtual endoscopy system. Machine GRAPHICS&VISION, 8(3):469–487, 1999.Google Scholar
  4. 4.
    G. Wang and M.W. Vannier. GI tract unraveling by spiral CT. In Proceedings SPIE., volume 2434, pages 307–315, 1995.CrossRefGoogle Scholar
  5. 5.
    E. Sorantin, E. Balogh, K. Palagy, G. Werkgartner, E. Spuller, and S. Loncaric. MEDICAL RADIOLOGY—Diagnostic Imaging, chapter “Technique of Virtual Dissection of the Colon based on Spiral CT data”. Springer Verlag Press, 2001.Google Scholar
  6. 6.
    G. Wang, S.B. Dave, B.P. Brown, Z. Zhang, E.G. McFarland, J.W. Haller, and M.W. Vannier. Colon unraveling based on electrical field: Recent progress and further work. In Proceedings SPIE, volume 3660, pages 125–132, May 1999.CrossRefGoogle Scholar
  7. 7.
    S. Haker, S. Angenent, Allen Tannenbaum, and R. Kikinis. Nondistorting flattening maps and the 3d visualization of colon CT images. IEEE Transactions on Biomedical Engineering, 19(7):665–671, July 2000.Google Scholar
  8. 8.
    D.S. Paik, C.F. Beaulieu, R. B. Jeffrey, Jr. C.A. Karadi, and S. Napel. Visualization modes for CT colonography using cylindrical and planar map projections. Journal of Computer Tomography, 24(2):179–188, 2000.CrossRefGoogle Scholar
  9. 9.
    F. Klok. Two moving coordinate frames for sweeping along a 3D trajectory. Computer Aided Geometry Design, 3:217–229, 1986.MathSciNetMATHCrossRefGoogle Scholar
  10. 10.
    Takafumi Saito and Tokiichiro Takahashi. Comprehensible rendering of 3-D shapes. In Forest Baskett, editor, SIGGRAPH’90 Conference Proceedings, Annual Conference Series, pages 197–206, August 1990.Google Scholar

Copyright information

© Springer-Verlag Wien 2001

Authors and Affiliations

  • A. Vilanova Bartrolí
    • 1
  • R. Wegenkittl
    • 2
  • A. König
    • 1
  • E. Gröller
    • 1
  • E. Sorantin
    • 3
  1. 1.Institute of Computer Graphics and AlgorithmsVienna University of TechnologyAustria
  2. 2.Tiani MedgraphUniversity Hospital GrazAustria
  3. 3.Section of Digital Information and Image Processing, Department of RadiologyUniversity Hospital GrazAustria

Personalised recommendations