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Comparing Physical and Immersive VR Prototypes for Evaluation of an Industrial System User Interface Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Adaptive Illumination Sampling for Direct Volume Rendering

Authors : Valentin Kraft, Florian Link, Andrea Schenk, Christian Schumann

Published in: Advances in Computer Graphics

Publisher: Springer International Publishing

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Abstract

Direct volume rendering is used to visualize data from sources such as tomographic imaging devices. The perception of certain structures depends very much on visual cues such as lighting and shadowing. According illumination techniques have been proposed for both surface rendering and volume rendering. However, in the case of direct volume rendering, some form of precomputation is typically required for real-time rendering. This however limits the application of the visualization. In this work we present adaptive volumetric illumination sampling, a ray-casting-based direct volume rendering method that strongly reduces the amount of necessary illumination computations without introducing any noise. By combining it with voxel cone tracing, realistic lighting including ambient occlusion and image-based lighting is facilitated in real-time. The method only requires minimal precomputation and allows for interactive transfer function updates and clipping of the visualized data.

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Footnotes
2
2048 \(\times \) 1080 pixel.
 
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Metadata
Title
Adaptive Illumination Sampling for Direct Volume Rendering
Authors
Valentin Kraft
Florian Link
Andrea Schenk
Christian Schumann
Copyright Year
2020
Book
Advances in Computer Graphics

Print ISBN: 978-3-030-61863-6

Electronic ISBN: 978-3-030-61864-3

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-61864-3_10

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