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Visualization Symposium, IEEE Pacific (2012)
Songdo, Korea (South)
Feb. 28, 2012 to Mar. 2, 2012
ISBN: 978-1-4673-0863-2
pp: 169-176
Mathias Schott , University of Utah, USA
Tobias Martin , University of Utah, USA
A.V. Pascal Grosset , University of Utah, USA
Carson Brownlee , University of Utah, USA
Thomas Hollt , King Abdullah University of Science and Technology, Saudi Arabia
Benjamin P. Brown , University of Wisconsin, USA
Sean T. Smith , University of Utah, USA
Charles D. Hansen , University of Utah, USA
In this paper, a method for interactive direct volume rendering is proposed that computes ambient occlusion effects for visualizations that combine both volumetric and geometric primitives, specifically tube shaped geometric objects representing streamlines, magnetic field lines or DTI fiber tracts. The proposed algorithm extends the recently proposed Directional Occlusion Shading model to allow the rendering of those geometric shapes in combination with a context providing 3D volume, considering mutual occlusion between structures represented by a volume or geometry.

B. P. Brown et al., "Combined surface and volumetric occlusion shading," Visualization Symposium, IEEE Pacific(PACIFICVIS), Songdo, Korea (South), 2012, pp. 169-176.
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