Diffusion Based Photon Mapping

Publikation: Bidrag til bog/antologi/rapportBidrag til bog/antologiForskningfagfællebedømt

Density estimation employed in multi-pass global illumination algorithms give cause to a trade-off problem between bias and noise. The problem is seen most evident as blurring of strong illumination features. In particular this blurring erodes fine structures and sharp lines prominent in caustics. To address this problem we introduce a novel photon mapping algorithm based on nonlinear anisotropic diffusion. Our algorithm adapts according to the structure of the photon map such that smoothing occurs along edges and structures and not across. In this way we preserve the important illumination features, while eliminating noise. We call our method diffusion based photon mapping.
OriginalsprogEngelsk
TitelAdvances in Computer Graphics and Computer Vision : International conferences, VISAPP and GRAPP 2006, Setúbal, Portugal, February 25-28, 2006 : revised selected papers
RedaktørerJosé Braz, Alpesh Ranchordas, Helder Araújo, Joaquim Jorge
UdgivelsesstedBerlin/Heidelberg
ForlagSpringer
Publikationsdato2007
Sider109-122
ISBN (Trykt)9783540752721
ISBN (Elektronisk)9783540752745
StatusUdgivet - 2007
NavnCommunications in Computer and Information Science
Nummer4
ISSN1865-0929

ID: 1948733