Title: A new approach for multiple scattering modelling in participating media
Authors: Da Dalto, Laurent
Paulin, Mathias
Jessel, Jean-Pierre
Caubet, René
Citation: Journal of WSCG. 1997, vol. 5, no. 1-3, p. 94-103.
Issue Date: 1997
Publisher: Václav Skala - UNION Agency
Document type: article
článek
URI: http://hdl.handle.net/11025/15878
http://wscg.zcu.cz/wscg1997/wscg97.htm
ISSN: 1213-6972 (print)
1213-6980 (CD-ROM)
1213-6964 (online)
Keywords: zúčastněná média;nově řešený odběr vzorků;analytické tvary;modelování
Keywords in different language: participating media;new sampling solution;analytic shapes;modelling
Abstract in different language: Many of current rendering methods for participating media need a large storage space a huge computations but do not simulate realistic media. Most of the time, it is due to the way the media are sampled. A fine sampling leads to a good representation of the optical and physical properties of media but requests often powerful computers and huge memory space. That´s why we present a new sampling solution. It is based on analytic shapes to model volume boundaries and variation functions to model volume properties. The sample is fitted to the ray while it is crossing the medium. An independent solution is proposed for the multiple scattering effects. This new approach has numerous advantages. With a low memory and computation cost, the medium parameters are easy to change. The most important advantage is that all the physical and optical properties of volumes are designed, even the multiple scattering. Moreover, the density varies inside the medium using a non-linear function. Thus, we can represent a wide range of participating media without making important change in the implementation.
Rights: © Václav Skala - UNION Agency
Appears in Collections:Volume 5, number 1-3 (1997)

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