| 1. Identity statement | |
| Reference Type | Conference Paper (Conference Proceedings) |
| Site | sibgrapi.sid.inpe.br |
| Holder Code | ibi 8JMKD3MGPEW34M/46T9EHH |
| Identifier | 8JMKD3MGPBW4/35S5N8H |
| Repository | sid.inpe.br/sibgrapi@80/2009/08.17.17.40 |
| Last Update | 2009:08.17.17.40.52 (UTC) administrator |
| Metadata Repository | sid.inpe.br/sibgrapi@80/2009/08.17.17.40.53 |
| Metadata Last Update | 2022:06.14.00.13.58 (UTC) administrator |
| DOI | 10.1109/SIBGRAPI.2009.8 |
| Citation Key | LevadaMascTann:2009:NoItAp |
| Title | GSAShrink: A Novel Iterative Approach for Wavelet-Based Image Denoising  |
| Format | Printed, On-line. |
| Year | 2009 |
| Access Date | 2024, May 02 |
| Number of Files | 1 |
| Size | 409 KiB |
| 2. Context | |
| Author | 1 Levada, Alexandre L. M. 2 Mascarenhas, Nelson Delfino d'Ávila 3 Tannús, Alberto |
| Affiliation | 1 Universidade de São Paulo 2 Universidade Federal de São Carlos 3 Universidade de São Paulo |
| Editor | Nonato, Luis Gustavo Scharcanski, Jacob |
| e-Mail Address | alexandre.levada@gmail.com |
| Conference Name | Brazilian Symposium on Computer Graphics and Image Processing, 22 (SIBGRAPI) |
| Conference Location | Rio de Janeiro, RJ, Brazil |
| Date | 11-14 Oct. 2009 |
| Publisher | IEEE Computer Society |
| Publisher City | Los Alamitos |
| Book Title | Proceedings |
| Tertiary Type | Full Paper |
| History (UTC) | 2010-08-28 20:03:26 :: alexandre.levada@gmail.com -> administrator :: 2022-06-14 00:13:58 :: administrator -> :: 2009 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Version Type | finaldraft |
| Keywords | Image Denoising Wavelets Bayesian Estimation Maximum a Posteriori Game Strategy Approach |
| Abstract | In this paper we propose a novel iterative algorithm for wavelet-based image denoising following a Maximum a Posteriori (MAP) approach. The wavelet shrinkage problem is modeled according to the Bayesian paradigm, providing a strong and extremely flexible framework for solving general image denoising problems. To approximate the MAP estimator, we propose GSAShrink, a modified version of a known combinatorial optimization algorithm based on non-cooperative game theory (Game Strategy Approach, or GSA). In order to modify the original algorithm to our purposes, we generalize GSA by introducing some additional control parameters and steps to reflect the nature of wavelet shrinkage applications. To test and evaluate the proposed method, experiments using several wavelet basis on noisy images are proposed. Additionally to better visual quality, the obtained results produce quantitative metrics (MSE, PSNR, ISNR and UIQ) that show significant improvements in comparison to traditional wavelet denoising approaches known as soft and hard thresholding, indicating the effectiveness of the proposed algorithm. |
| Arrangement 1 | urlib.net > SDLA > Fonds > SIBGRAPI 2009 > GSAShrink: A Novel... |
| Arrangement 2 | urlib.net > SDLA > Fonds > Full Index > GSAShrink: A Novel... |
| 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/8JMKD3MGPBW4/35S5N8H |
| zipped data URL | http://urlib.net/zip/8JMKD3MGPBW4/35S5N8H |
| Language | en |
| Target File | GSAShrink_Sibgrapi2009.pdf |
| User Group | alexandre.levada@gmail.com |
| Visibility | shown |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPEW34M/46SJQ2S 8JMKD3MGPEW34M/4742MCS |
| Citing Item List | sid.inpe.br/sibgrapi/2022/05.14.19.43 11 |
| 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 |