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Reference TypeConference Proceedings
Identifier6qtX3pFwXQZeBBx/GwdPy
Repositorysid.inpe.br/banon/2005/06.21.00.46
Metadatasid.inpe.br/banon/2005/06.21.00.46.21
Sitesibgrapi.sid.inpe.br
Citation KeyHelouNetoPier:2005:EfReCo
Author1 Helou Neto, Elias Salomão
2 De Pierro, Álvaro Rodolfo
Affiliation1 UNICAMP
TitleOn the effect of relaxation in the convergence and quality of statistical image reconstruction for emission tomography using block-iterative algorithms
Conference NameBrazilian Symposium on Computer Graphics and Image Processing, 18 (SIBGRAPI)
Year2005
EditorRodrigues, Maria Andréia Formico
Frery, Alejandro César
Book TitleProceedings
Date9-12 Oct. 2005
Publisher CityLos Alamitos
PublisherIEEE Computer Society
Conference LocationNatal
Keywordsemission tomography, iterative algorithms.
AbstractRelaxation is widely recognized as a useful tool for providing convergence in block-iterative algorithms [1], [2], [6]. In the present article we give new results on the convergence of RAMLA (Row Action Maximum Likelihood Algorithm) [2], filling some important theoretical gaps. Furthermore, because RAMLA and OS-EM (Ordered Subsets - Expectation Maximization) [4] are the algorithms for statistical reconstruction currently being used in commercial emission tomography scanners, we present a comparison between them from the viewpoint of a specific imaging task. Our experiments show the importance of relaxation to improve image quality.
Languageen
Tertiary TypeFull Paper
FormatOn-line
Size662 KiB
Number of Files1
Target Fileheloue_tomography.pdf
Last Update2005:07.05.03.00.00 sid.inpe.br/banon/2001/03.30.15.38 administrator
Metadata Last Update2020:02.19.03.19.05 sid.inpe.br/banon/2001/03.30.15.38 administrator {D 2005}
Document Stagecompleted
Is the master or a copy?is the master
e-Mail Addresse950514@ime.unicamp.br
User Groupeshneto administrator
Visibilityshown
Transferable1
Host Collectionsid.inpe.br/banon/2001/03.30.15.38
Content TypeExternal Contribution
source Directory Contentthere are no files
agreement Directory Contentthere are no files
History2005-06-21 00:46:22 :: eshneto -> banon ::
2005-06-22 21:12:25 :: banon -> eshneto ::
2008-07-17 14:10:58 :: eshneto -> banon ::
2008-08-26 15:17:00 :: banon -> administrator ::
2009-08-13 20:37:41 :: administrator -> banon ::
2010-08-28 20:01:16 :: banon -> administrator ::
2020-02-19 03:19:05 :: administrator -> :: 2005
Empty Fieldsaccessionnumber archivingpolicy archivist area callnumber copyholder copyright creatorhistory descriptionlevel dissemination documentstage doi edition electronicmailaddress group holdercode isbn issn label lineage mark mirrorrepository 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. 27

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