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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

info:eu-repo/grantAgreement/MICINN//TIN2010-21089-C03-01/ES/CONTENIDO DIGITAL PARA JUEGOS SERIOS: CREACION, GESTION, RENDERIZADO E INTERACCION/

Wiley

Manager: Ministerio de Ciencia e Innovación (Espanya)
Ministerio de Educación y Ciencia (Espanya)
Generalitat de Catalunya. Agència de Gestió d’Ajuts Universitaris i de Recerca
Author: García Hernandez, Rubén Jesús
Ureña, Carlos
Sbert, Mateu
Abstract: 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
Document access: http://hdl.handle.net/10256/11675
Language: eng
Publisher: Wiley
Collection: info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1467-8659.2011.02081.x
info:eu-repo/semantics/altIdentifier/issn/0167-7055
info:eu-repo/semantics/altIdentifier/eissn/1467-8659
info:eu-repo/grantAgreement/MEC//TIN2007-68066-C04-01/ES/CONTENIDO INTELIGENTE PARA APLICACIONES DE REALIDAD VIRTUAL. TECNICAS DE PUNTO DE VISTA E ILUMINACION GLOBAL/
AGAUR/2009-2014/2009 SGR-643
Is part of: info:eu-repo/grantAgreement/MICINN//TIN2010-21089-C03-01/ES/CONTENIDO DIGITAL PARA JUEGOS SERIOS: CREACION, GESTION, RENDERIZADO E INTERACCION/
Rights: Tots els drets reservats
Subject: Kernel, Funcions de
Kernel functions
Infografia
Computer graphics
Funcional de densitat, Teoria del
Density functionals
Title: Description and solution of an unreported intrinsic bias in photon mapping density estimation with constant kernel
Type: info:eu-repo/semantics/article
Repository: DUGiDocs

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