| 1. Identity statement | |
| Reference Type | Journal Article |
| Site | plutao.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identifier | 8JMKD3MGP3W/4AC8JCA |
| Repository | sid.inpe.br/plutao/2023/12.11.16.24.44 |
| Last Update | 2023:12.14.11.59.15 (UTC) lattes |
| Metadata Repository | sid.inpe.br/plutao/2023/12.11.16.24.45 |
| Metadata Last Update | 2024:01.02.17.00.38 (UTC) administrator |
| DOI | 10.1590/s1982-21702023000300007 |
| ISSN | 1413-4853 |
| Label | lattes: 8997858562195060 2 JesusKupBarHilRos:2023:SpReSe |
| Citation Key | JesusKupBarHilRos:2023:SpReSe |
| Title | Speckle reduction for Sentinel-1A SAR images in the Semi-arid caatinga region, Brazil  |
| Year | 2023 |
| Access Date | 2024, May 28 |
| Type of Work | journal article |
| Secondary Type | PRE PN |
| Number of Files | 1 |
| Size | 856 KiB |
| 2. Context | |
| Author | 1 Jesus, Janisson Batista de 2 Kuplich, Tatiana Mora 3 Barreto, Íkaro Daniel de Carvalho 4 Hillebrand, Fernando Luis 5 Rosa, Cristiano Niederauer da |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JJ9P |
| ORCID | 1 0000-0001-8372-5557 2 0000-0003-0657-4024 3 0000-0001-7253-806X 4 0000-0002-0182-8526 5 0000-0003-3693-4764 |
| Group | 1 2 COESU-CGGO-INPE-MCTI-GOV-BR |
| Affiliation | 1 Universidade Federal de Sergipe 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Centro Brasileiro de Pesquisa em Avaliação e Seleção e de Promoção de Eventos (CEBRASPE) 4 Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul (IFRS) 5 Imagem Geosistemas |
| Author e-Mail Address | 1 janisson.eng@gmail.com 2 tatiana.kuplich@inpe.br 3 daniel.carvalho.ib@gmail.com 4 fernando.hillebrand@rolante.ifrs.edu.br 5 cristianonrd@gmail.com |
| Journal | Boletim de Ciências Geodésicas |
| Volume | 29 |
| Number | 3 |
| Pages | e2023007 |
| Secondary Mark | A1_CIÊNCIAS_AMBIENTAIS A2_INTERDISCIPLINAR A2_GEOGRAFIA B1_CIÊNCIAS_AGRÁRIAS_I B2_GEOCIÊNCIAS B2_ENGENHARIAS_IV B2_ENGENHARIAS_III B2_ENGENHARIAS_I B5_MATEMÁTICA_/_PROBABILIDADE_E_ESTATÍSTICA C_SAÚDE_COLETIVA C_CIÊNCIA_DA_COMPUTAÇÃO C_ASTRONOMIA_/_FÍSICA |
| History (UTC) | 2023-12-11 16:24:45 :: lattes -> administrator :: 2023-12-14 11:57:13 :: administrator -> lattes :: 2023 2023-12-14 11:59:17 :: lattes -> administrator :: 2023 2024-01-02 17:00:38 :: administrator -> simone :: 2023 |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | completed |
| Transferable | 1 |
| Content Type | External Contribution |
| Version Type | publisher |
| Keywords | Digital image processing Noise Synthetic aperture radar Tropical dry forest |
| Abstract | Due to the absence of studies related to the digital processing of synthetic aperture radar (SAR) images in the semi-arid region of Brazil, the aim of this study was to test different filters for reducing speckle noise in SAR images, serving as a reference for choosing the most suitable filter for different studies in this vegetation. The filters: Gamma Map, Lee Sigma, Median, Frost and Refined Lee in different window sizes were tested on the VV, VH and VH/VV polarizations in the Sentinel-1A images, verifying the responses under the influence of the dry and post-rainy period in the Caatinga vegetation. In the state of Sergipe, Brazil, 30 samples of Caatinga fragments obtained from Sentinel1A images for the dry and post-rainy season were selected. For all images evaluated, the values of the averages of the equivalent number of looks (ENL) were compared by the Tukey test at 5% significance. The Gamma filter showed the highest amount of means (22) with the highest ENL values, followed by Median (5). The generation of ENL results and their comparison, considering all variables used, was essential to serve as a basis for choosing the filtering method in studies that use data from Sentinel-1A in the Caatinga region. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção a partir de 2021 > CGGO > Speckle reduction for... |
| 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://plutao.sid.inpe.br/ibi/8JMKD3MGP3W/4AC8JCA |
| zipped data URL | http://plutao.sid.inpe.br/zip/8JMKD3MGP3W/4AC8JCA |
| Language | pt |
| Target File | download (6).pdf |
| User Group | lattes |
| Reader Group | administrator lattes |
| Visibility | shown |
| Archiving Policy | allowpublisher allowfinaldraft |
| Update Permission | not transferred |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/46KUBT5 |
| Citing Item List | sid.inpe.br/bibdigital/2022/04.03.22.35 7 |
| Dissemination | WEBSCI; PORTALCAPES; SCIELO; SCOPUS. |
| Host Collection | dpi.inpe.br/plutao@80/2008/08.19.15.01 |
| 6. Notes | |
| Empty Fields | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress format isbn lineage mark mirrorrepository month nextedition notes parameterlist parentrepositories previousedition previouslowerunit progress project readpermission rightsholder schedulinginformation secondarydate secondarykey session shorttitle sponsor subject tertiarymark tertiarytype url |
| 7. Description control | |
| e-Mail (login) | simone |
| update | |