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...

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Vydané v:	Computer graphics forum Ročník 31; číslo 1; s. 33 - 41
Hlavní autori:	García, R., Ureña, C., Sbert, M.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	Oxford, UK Blackwell Publishing Ltd 01.02.2012
Predmet:	Algorithms Analysis Computer graphics Density Empirical analysis Estimators F.2.2 [Analysis of Algorithms and Problem Complexity]: Non-numerical Algorithms and Problems G.3 [Probability and Statistics] I.3.7 [Computer Graphics]: Three-Dimensional Graphics and Realism Image processing systems Kernels Mapping Mathematical models Photons Studies
ISSN:	0167-7055, 1467-8659
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