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1. Identity statement
Reference TypeConference Paper (Conference Proceedings)
Sitesibgrapi.sid.inpe.br
Holder Codeibi 8JMKD3MGPEW34M/46T9EHH
Identifier8JMKD3MGPBW34M/3CETK52
Repositorysid.inpe.br/sibgrapi/2012/08.15.10.30
Last Update2012:08.15.10.30.35 (UTC) administrator
Metadata Repositorysid.inpe.br/sibgrapi/2012/08.15.10.30.35
Metadata Last Update2022:06.14.00.07.39 (UTC) administrator
DOI10.1109/SIBGRAPI.2012.28
Citation KeyFaveraCele:2012:AmOcUs
TitleAmbient occlusion using cone tracing with scene voxelization
FormatDVD, On-line.
Year2012
Access Date2024, Apr. 20
Number of Files1
Size6758 KiB
2. Context
Author1 Favera, Eduardo Ceretta Dalla
2 Celes, Waldemar
Affiliation1 Computer Science Department, PUC-Rio 
2 Computer Science Department, PUC-Rio
EditorFreitas, Carla Maria Dal Sasso
Sarkar, Sudeep
Scopigno, Roberto
Silva, Luciano
e-Mail Addressceles@inf.puc-rio.br
Conference NameConference on Graphics, Patterns and Images, 25 (SIBGRAPI)
Conference LocationOuro Preto, MG, Brazil
Date22-25 Aug. 2012
PublisherIEEE Computer Society
Publisher CityLos Alamitos
Book TitleProceedings
Tertiary TypeFull Paper
History (UTC)2012-09-20 16:45:34 :: celes@inf.puc-rio.br -> administrator :: 2012
2022-03-08 21:03:25 :: administrator -> menottid@gmail.com :: 2012
2022-03-10 12:53:43 :: menottid@gmail.com -> administrator :: 2012
2022-06-14 00:07:39 :: administrator -> :: 2012
3. Content and structure
Is the master or a copy?is the master
Content Stagecompleted
Transferable1
Version Typefinaldraft
KeywordsAmbient occlusion
cone tracing
global ilumination
AbstractAmbient occlusion is a low-cost technique to simulate indirect ambient illumination in a realistic way. The goal is to estimate the amount of incident ambient light at each visible point. In this paper, we propose a novel ambient occlusion method that produces good quality results in real time. Using an efficient voxelization algorithm, we create a volumetric description of the scene geometry in a regular grid. During scene rendering, the hemisphere around each visible point is sampled by a set of cones, each one representing a package of rays. The volume of each cone is sampled by a series of spheres. The obstructed volumes of the spheres are used to estimate the amount of rays that are blocked by the scene geometry. The final ambient occlusion at each visible point is computed by considering all cones in the hemisphere. This approach has shown to be quite adequate: the intersection of each sphere with the voxelized scene is performed in a very efficient manner, and good quality results are achieved with a small number of cones. Computational experiments demonstrate the efficiency and effectiveness of our proposal.
Arrangement 1urlib.net > SDLA > Fonds > SIBGRAPI 2012 > Ambient occlusion using...
Arrangement 2urlib.net > SDLA > Fonds > Full Index > Ambient occlusion using...
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4. Conditions of access and use
data URLhttp://urlib.net/ibi/8JMKD3MGPBW34M/3CETK52
zipped data URLhttp://urlib.net/zip/8JMKD3MGPBW34M/3CETK52
Languageen
Target Filemain.pdf
User Groupceles@inf.puc-rio.br
Visibilityshown
5. Allied materials
Mirror Repositorysid.inpe.br/banon/2001/03.30.15.38.24
Next Higher Units8JMKD3MGPEW34M/46SL8GS
8JMKD3MGPEW34M/4742MCS
Citing Item Listsid.inpe.br/sibgrapi/2022/05.15.03.31 5
Host Collectionsid.inpe.br/banon/2001/03.30.15.38
6. Notes
Empty Fieldsarchivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage edition electronicmailaddress group isbn issn label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission resumeid rightsholder schedulinginformation secondarydate secondarykey secondarymark secondarytype serieseditor session shorttitle sponsor subject tertiarymark type url volume


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