| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | sibgrapi.sid.inpe.br |
| Holder Code | ibi 8JMKD3MGPEW34M/46T9EHH |
| Identifier | 6qtX3pFwXQZeBBx/GwdPy |
| Repository | sid.inpe.br/banon/2005/06.21.00.46 |
| Last Update | 2005:07.05.03.00.00 (UTC) administrator |
| Metadata Repository | sid.inpe.br/banon/2005/06.21.00.46.21 |
| Metadata Last Update | 2022:06.14.00.12.51 (UTC) administrator |
| DOI | 10.1109/SIBGRAPI.2005.35 |
| Citation Key | HelouNetoPier:2005:EfReCo |
| Title | On the effect of relaxation in the convergence and quality of statistical image reconstruction for emission tomography using block-iterative algorithms  |
| Format | On-line |
| Year | 2005 |
| Access Date | 2025, Mar. 21 |
| Number of Files | 1 |
| Size | 662 KiB |
| 2. Context | |
| Author | 1 Helou Neto, Elias Salomão 2 De Pierro, Álvaro Rodolfo |
| Affiliation | 1 UNICAMP |
| Editor | Rodrigues, Maria Andréia Formico Frery, Alejandro César |
| e-Mail Address | e950514@ime.unicamp.br |
| Conference Name | Brazilian Symposium on Computer Graphics and Image Processing, 18 (SIBGRAPI) |
| Conference Location | Natal, RN, Brazil |
| Date | 9-12 Oct. 2005 |
| Publisher | IEEE Computer Society |
| Publisher City | Los Alamitos |
| Book Title | Proceedings |
| Tertiary Type | Full Paper |
| History (UTC) | 2005-06-21 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 :: 2022-06-14 00:12:51 :: administrator -> :: 2005 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Version Type | finaldraft |
| Keywords | emission tomography iterative algorithms |
| Abstract | Relaxation 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. |
| Arrangement 1 | urlib.net > SDLA > Fonds > SIBGRAPI 2005 > On the effect... |
| Arrangement 2 | urlib.net > SDLA > Fonds > Full Index > On the effect... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/6qtX3pFwXQZeBBx/GwdPy |
| zipped data URL | http://urlib.net/zip/6qtX3pFwXQZeBBx/GwdPy |
| Language | en |
| Target File | heloue_tomography.pdf |
| User Group | eshneto administrator |
| Visibility | shown |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPEW34M/46R3ED5 8JMKD3MGPEW34M/4742MCS |
| Citing Item List | sid.inpe.br/sibgrapi/2022/05.05.04.08 55 sid.inpe.br/sibgrapi/2022/06.10.21.49 5 sid.inpe.br/banon/2001/03.30.15.38.24 2 |
| Host Collection | sid.inpe.br/banon/2001/03.30.15.38 |
| 6. Notes | |
| Empty Fields | archivingpolicy archivist area callnumber contenttype copyholder copyright creatorhistory descriptionlevel dissemination documentstage edition electronicmailaddress group isbn issn label lineage mark mirrorrepository 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 |