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Canned Lightsources

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Rendering Techniques ’98 (EGSR 1998)

Part of the book series: Eurographics ((EUROGRAPH))

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Abstract

Complex luminaries and lamp geometries can greatly increase the realism of synthetic images.

Unfortunately, the correct rendering of illumination from complex lamps requires costly global illumination algorithms to simulate the indirect illumination reflected or refracted by parts of the lamp. Currently, this simulation has to be repeated for every scene in which a lamp is to be used, and even for multiple instances of a lamp within a single scene.

In this paper, we separate the global illumination simulation of the interior lamp geometry from the actual scene rendering. The lightfield produced by a given lamp is computed using any of the known global illumination algorithms. Afterwards, a discretized version of this lightfield is stored away for later use as a lightsource. We describe how this data can be efficiently utilized to illuminate a given scene using a number of different rendering algorithms, such as ray-tracing and hardware-based rendering.

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Author information

Authors and Affiliations

  1. Computer Graphics Group, University of Erlangen, Am Weichselgarten 9, D-91058, Erlangen, Germany

    Wolfgang Heidrich, Jan Kautz, Philipp Slusallek & Hans-Peter Seidel

Authors
  1. Wolfgang Heidrich
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  2. Jan Kautz
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  3. Philipp Slusallek
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  4. Hans-Peter Seidel
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Editor information

Editors and Affiliations

  1. INRIA, Grenoble, France

    George Drettakis

  2. Lawrence Livermore National Laboratory, University of California, USA

    Nelson Max

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© 1998 Springer-Verlag Wien

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Heidrich, W., Kautz, J., Slusallek, P., Seidel, HP. (1998). Canned Lightsources. In: Drettakis, G., Max, N. (eds) Rendering Techniques ’98. EGSR 1998. Eurographics. Springer, Vienna. https://doi.org/10.1007/978-3-7091-6453-2_27

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  • DOI: https://doi.org/10.1007/978-3-7091-6453-2_27

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  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-211-83213-4

  • Online ISBN: 978-3-7091-6453-2

  • eBook Packages: Springer Book Archive

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