GPU-accelerated direct volume rendering of finite element data sets

Authors:
Bingchen Liu;Alexander Bock;Timo Ropinski;Martyn Nash;Poul Nielsen;Burkhard C. Wünsche
Affiliations:
University of Auckland, Auckland, New Zealand;Linköping University, Norrköping, Sweden;Linköping University, Norrköping, Sweden;University of Auckland, Auckland, New Zealand;University of Auckland, Auckland, New Zealand;University of Auckland, Auckland, New Zealand
Venue:
Proceedings of the 27th Conference on Image and Vision Computing New Zealand
Year:
2012

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Abstract

Direct Volume Rendering of Finite Element models is challenging since the visualisation process is performed in world coordinates, whereas data fields are usually defined over the elements' material coordinate system. In this paper we present a framework for Direct Volume Rendering of Finite Element models. We present several novel implementations visualising Finite Element data directly without requiring resampling into world coordinates. We evaluate the methods using several biomedical Finite Element models. Our GPU implementation of ray-casting in material coordinates using depth peeling is several orders of magnitude faster than the corresponding CPU approach, and our new ray interpolation approach achieves near interactive frame rates for high-order finite element models at high resolutions.