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Found 7 item(s) authored by "Christian Tietjen" Find Author on Google.

Proceedings Combining Silhouettes, Surface, and Volume Rendering for Surgery Education and Planning
Christian Tietjen, Tobias Isenberg, Bernhard Preim.
Eurographics / IEEE VGTC Symposium on Visualization (EUROVIS 2005), pp. 303--310, Leeds, UK, June 1-3, 2005. [BibTeX]

Proceedings Curvature- and Model-Based Surface Hatching of Anatomical Structures Derived from Clinical Volume Datasets
Rocco Gasteiger, Christian Tietjen, Alexandra Baer, Bernhard Preim.
Proceedings of Smart Graphics, pp. 255--262, 2008. [BibTeX]

Proceedings Enhancing Slice-based Visualizations of Medical Volume Data
Christian Tietjen, Björn Meyer, Stefan Schlechtweg, Bernhard Preim, Ilka Hertel, Gero Strauß.
IEEE/Eurographics Symposium on Visualization (EUROVIS'06), pp. 123-130, IEEE, 2006. [BibTeX]

Article GPU-based smart visibility techniques for tumor surgery planning
Christoph Kubisch, Christian Tietjen, Bernhard Preim.
International Journal of Computer Assisted Radiology and Surgery, Vol. 5, No. 6, pp. 667--678, 2010. [BibTeX]

Proceedings Hardware-Accelerated Illustrative Medical Surface Visualization with Extended Shading Maps

Author(s): Christian Tietjen, Roland Pfisterer, Alexandra Baer, Rocco Gasteiger, Bernhard Preim.
Proceedings: Proceedings of the 9th International Symposium on Smart Graphics (SG'08), pp. 166--167, Springer-Verlag, 2008.
[BibTeX] [DOI] Find this paper on Google

In this paper, we introduce a new framework for the illustrative visualization of medical surface data. In most visualization frameworks, only light intensity is used to determine the surface shading. The analysis of medical textbooks reveals more complex shading approaches. The parameters of these approaches are mapped to different Shading Maps, which may be weighted and flexibly combined. We discuss the use of high-level attributes to simplify the specification. The resulting Shading Map is used as a lookup to determine the final intensity at a certain area. For this purpose, the rendering is accomplished on GPU by using OpenGL's Framebuffer Objects. This framework may be useful for interactive educational systems or for medical record printings.

Proceedings Hardware-accelerated Stippling of Surfaces derived from Medical Volume Data
Alexandra Baer, Christian Tietjen, Ragnar Bade, Bernhard Preim.
Eurographics/IEEE-VGTC Symposium on Visualization, pp. 235--242, 2007. [BibTeX]

Proceedings NPR, Focussing and Emphasis in Medical Visualizations
Bernhard Preim, Christian Tietjen, Christina Dörge.
In Simulation und Visualisierung 2005. SCS, 2005. [BibTeX]

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