Reference TypeConference Proceedings
Citation KeyPereiraGomiStol:2010:CoFiEl
Author1 Pereira, Danillo Roberto
2 Gomide, Anamaria
3 Stolfi, Jorge
Affiliation1 Insitute of Computing - UNICAMP
2 Insitute of Computing - UNICAMP
3 Insitute of Computing - UNICAMP
TitleComparison of Finite Element Bases for Global Illumination in Image Synthesis
Conference NameConference on Graphics, Patterns and Images, 23 (SIBGRAPI)
EditorBellon, Olga
Esperanša, Claudio
Book TitleProceedings
DateAug. 30 - Sep. 3, 2010
Publisher CityLos Alamitos
PublisherIEEE Computer Society
Conference LocationGramado
KeywordsRadiosity FEM.
AbstractFinite element bases defined by sampling points were used by J. Lehtinen in 2008 for the efficient computation of global illumination in virtual scenes. The bases provide smooth approximations for the radiosity and spontaneous emission functions, leading to a discrete version of Kajiya's rendering equation. Unlike methods that are based on surface subdivision, Lehtinen's method can cope with arbitrarily complex geometries. In this paper we present an experimental validation of Lehtinen's meshless method by comparing its results with an independent numerical solution of the rendering equation on a simple three-dimensional scene. We also compare Lehtinen's special finite-element basis with two other similar bases that are often used for meshless data interpolation, namely a radial basis with a Gaussian mother function, and Shepard's inverse-square-distance weighted interpolation. The results confirm the superiority of Lehtinen's basis and clarify why the other two bases provide inferior-looking results. .
Tertiary TypeFull Paper
FormatPrinted, On-line.
Size273 KiB
Number of Files1
Target File69515_2.pdf
Last Update2010:
Metadata Last Update2010: {D 2010}
Document Stagecompleted
Is the master or a copy?is the master
Content TypeExternal Contribution
source Directory Contentthere are no files
agreement Directory Contentthere are no files
History2010-10-01 04:19:39 :: -> :: 2010
Empty Fieldsaccessionnumber archivingpolicy archivist area callnumber copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi edition electronicmailaddress group holdercode isbn issn label lineage mark nextedition nexthigherunit notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url versiontype volume
Access Date2020, Nov. 24