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Spectral volume rendering using GPU-based raycasting

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Abstract

Traditional volume rendering does not incorporate a number of optical properties that are typically observed for semi-transparent materials, such as glass or water, in the real world. Therefore, we have extended GPU-based raycasting to spectral volume rendering based on the Kubelka–Munk theory for light propagation in parallel colorant layers of a turbid medium. This allows us to demonstrate the effects of selective absorption and dispersion in refractive materials, by generating volume renderings using real physical optical properties. We show that this extended volume rendering technique can be easily incorporated into a flexible framework for GPU-based volume raycasting. Our implementation shows a promising performance for a number of real data sets. In particular, we obtain up to 100 times the performance of a comparable CPU implementation.

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Authors and Affiliations

  1. VIS Group, University of Stuttgart, Universitätsstraße 38, 70569, Stuttgart, Germany

    Magnus Strengert, Thomas Klein, Ralf Botchen, Simon Stegmaier & Thomas Ertl

  2. Department of Computer Science, University of Wales Swansea, Singelton Park, Swansea, SA2 8PP, United Kingdom

    Min Chen

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  1. Magnus Strengert
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  2. Thomas Klein
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  3. Ralf Botchen
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  4. Simon Stegmaier
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  5. Min Chen
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  6. Thomas Ertl
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Correspondence to Magnus Strengert.

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Strengert, M., Klein, T., Botchen, R. et al. Spectral volume rendering using GPU-based raycasting. Visual Comput 22, 550–561 (2006). https://doi.org/10.1007/s00371-006-0028-0

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