EFFICIENT ANALYTICAL INTEGRATION OF SINGLE SCATTERING FUNCTION

Umashankar Pradhan; Subodh Kumar

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Paper

EFFICIENT ANALYTICAL INTEGRATION OF SINGLE SCATTERING FUNCTION

Topics: Lighting and Appearance; Real-Time Rendering; Rendering Algorithms

In Proceedings of the International Conference on Computer Graphics Theory and Applications - Volume 0VISIGRAPP, 193-199, 2011 , Vilamoura, Algarve, Portugal

Authors: Umashankar Pradhan and Subodh Kumar

Affiliation: IIT Delhi, India

Keyword(s): Global Illumination, Scattering, Participative Media, Real time rendering.

Related Ontology Subjects/Areas/Topics: Computer Vision, Visualization and Computer Graphics ; Lighting and Appearance ; Real-Time Rendering ; Rendering ; Rendering Algorithms

Abstract: Light scattering through a participative medium has a significant impact on display. However, accurate and efficient simulation of scattering remains challenging. Monte Carlo or numerical integration techniques are commonly employed to solve the scattering equation. Single scattering is a common approximation that provides satisfactory results in many cases. Analytical integration of scattering under certain assumptions have been achieved by pre-computing a table of values. We present a new approximation to the single scattering equation that is easily integrable in real time. We analyze the error of this approximation and show that the numerical error is insignificant. The images are virtually indistinguishable from those obtained by the more accurate integration.

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Paper citation in several formats:

Pradhan, U. and Kumar, S. (2011). EFFICIENT ANALYTICAL INTEGRATION OF SINGLE SCATTERING FUNCTION. In Proceedings of the International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2011) - GRAPP; ISBN 978-989-8425-45-4; ISSN 2184-4321, SciTePress, pages 193-199. DOI: 10.5220/0003373901930199

@conference{grapp11,
author={Umashankar Pradhan. and Subodh Kumar.},
title={EFFICIENT ANALYTICAL INTEGRATION OF SINGLE SCATTERING FUNCTION},
booktitle={Proceedings of the International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2011) - GRAPP},
year={2011},
pages={193-199},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003373901930199},
isbn={978-989-8425-45-4},
issn={2184-4321},
}

TY - CONF

JO - Proceedings of the International Conference on Computer Graphics Theory and Applications (VISIGRAPP 2011) - GRAPP
TI - EFFICIENT ANALYTICAL INTEGRATION OF SINGLE SCATTERING FUNCTION
SN - 978-989-8425-45-4
IS - 2184-4321
AU - Pradhan, U.
AU - Kumar, S.
PY - 2011
SP - 193
EP - 199
DO - 10.5220/0003373901930199
PB - SciTePress