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Description and solution of an unreported intrinsic bias in photon mapping density estimation with constant kernel

This paper presents an analysis of the irradiance estimator often used in photon mapping algorithms and concludes that the classical approach with a constant kernel overestimates the correct value. We propose a new estimator that solves this problem and provide both theoretical and empirical studies to verify it

This work has been supported by the research projects coded TIN2007-68066-C04-01 and TIN2010-21089-C03-01 (Spanish Commission for Science and Technology), by grants VALTEC09-2-0118 and 2009SGR643 (Catalan Government) and by FEDER funding from the European Union

© Computer Graphics Forum, 2012, vol. 31, núm., p. 33-41

Wiley

Autor: García Hernandez, Rubén Jesús
Ureña, Carlos
Sbert, Mateu
Data: 2012
Resum: This paper presents an analysis of the irradiance estimator often used in photon mapping algorithms and concludes that the classical approach with a constant kernel overestimates the correct value. We propose a new estimator that solves this problem and provide both theoretical and empirical studies to verify it
This work has been supported by the research projects coded TIN2007-68066-C04-01 and TIN2010-21089-C03-01 (Spanish Commission for Science and Technology), by grants VALTEC09-2-0118 and 2009SGR643 (Catalan Government) and by FEDER funding from the European Union
Format: application/pdf
ISSN: 0167-7055 (versió paper)
1467-8659 (versió electrònica)
Accés al document: http://hdl.handle.net/10256/11675
Llenguatge: eng
Editor: Wiley
Col·lecció: MICINN/PN 2011-2013/TIN2010-21089-C03-01
MEC/PN 2007-2010/TIN2007-68066-C04-01
AGAUR/2009-2014/2009 SGR-643
CIDEM/2009-2012/VALTEC09-2-0118
Reproducció digital del document publicat a: http://dx.doi.org/10.1111/j.1467-8659.2011.02081.x
Articles publicats (D-IMA)
És part de: © Computer Graphics Forum, 2012, vol. 31, núm., p. 33-41
Drets: Tots els drets reservats
Matèria: Kernel, Funcions de
Kernel functions
Infografia
Computer graphics
Funcional de densitat, Teoria del
Density functionals
Títol: Description and solution of an unreported intrinsic bias in photon mapping density estimation with constant kernel
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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