| 1. Identificação | |
| Tipo de Referência | Artigo em Revista Científica (Journal Article) |
| Site | mtc-m12.sid.inpe.br |
| Código do Detentor | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Identificador | 6qtX3pFwXQZ3r59YD6/JANsa |
| Repositório | sid.inpe.br/iris@1912/2005/12.28.16.00 (acesso restrito) |
| Última Atualização | 2008:04.24.14.33.33 (UTC) marciana |
| Repositório de Metadados | sid.inpe.br/iris@1912/2005/12.28.16.00.59 |
| Última Atualização dos Metadados | 2022:04.11.18.10.29 (UTC) marciana |
| Chave Secundária | INPE--PRE/ |
| DOI | 10.1016/j.rse.2006.03.018 |
| ISSN | 0143-1161 |
| Rótulo | self-archiving-INPE-MCTIC-GOV-BR |
| Chave de Citação | LiesenbergGalvPonz:2007:ImClBr |
| Título | Variations in reflectance with seasonality and viewing geometry: implications for classification of Brazilian savannah physiognomies with MISR/Terra data  |
| Ano | 2007 |
| Data de Acesso | 05 maio 2024 |
| Tipo Secundário | PRE PI |
| Número de Arquivos | 1 |
| Tamanho | 1468 KiB |
| 2. Contextualização | |
| Autor | 1 Liesenberg, V. 2 Galvão, L. S. 3 Ponzoni, F. J. |
| Grupo | 1 DSR-INPE-MCT-BR 2 DSR-INPE-MCT-BR 3 DSR-INPE-MCT-BR |
| Afiliação | 1 Instituto Nacional de Pesquisas Espaciais, Divisão de Geração de Imagens (INPE, DGI) 2 Instituto Nacional de Pesquisas Espaciais, Coordenação do Programa Amazônia (INPE, AMZ) 3 Instituto Nacional de Pesquisas Espaciais, Divisão de Sensoriamento Remoto (INPE, DSR) |
| Revista | International Journal of Remote Sensing |
| Volume | 107 |
| Número | 1-2 |
| Páginas | 276-286 |
| Histórico (UTC) | 2005-12-28 16:01:00 :: marciana -> administrator :: 2007-06-13 14:18:50 :: administrator -> marciana :: 2008-04-24 14:39:33 :: marciana -> administrator :: 2008-06-09 19:20:52 :: administrator -> banon :: 2008-11-05 15:16:12 :: banon -> administrator :: 2010-05-12 04:10:24 :: administrator -> marciana :: 2011-11-01 19:14:12 :: marciana -> administrator :: 2022-03-05 04:19:07 :: administrator -> marciana :: 2007 |
| 3. Conteúdo e estrutura | |
| É a matriz ou uma cópia? | é a matriz |
| Estágio do Conteúdo | concluido |
| Transferível | 1 |
| Tipo do Conteúdo | External Contribution |
| Tipo de Versão | publisher |
| Palavras-Chave | Multi-angle Imaging SpectroRadiometer (MISR) savanna classification cerrado view angle sun zenith Seasonality imaging spectroradiometer hyperspectral brdf data land-cover types Amazon (Region) multiangle modis retrieval algorithm angles |
| Resumo | Bidirectional Reflectance Factor (BRF) data, collected at nine view angles, four bands and six dates by the Multi-angle Imaging SpectroRadiometer (MISR), were used to characterize the seasonality and viewing geometry effects on the discrimination of five selected physiognomies of a specific Brazilian savanna environment. Spectralangular profiles for each physiognomy (Seasonal, Dry and Pluvial Forests; Arboreous and Park Savanna) were obtained from nadir-normalized BRF data at each MISR band and date of image acquisition. The maximum likelihood classification technique was applied at each camera and date using a common set of pixels as training samples. A reference map was used as ground truth to obtain the classification accuracy for each physiognomy, view angle and date. Results showed that the surface anisotropy signatures of the savanna physiognomies were not unique and varied with Sun-view geometry and seasonality. Directional effects increased from data collected in the orthogonal plane to those acquired close to the solar principal plane, and with increasing Sun zenith angles. Such effects were also affected by seasonality due to differences in the dynamics of the vegetation response to precipitation, as indicated by the Fraction of Photosynthetically Active Radiation (FPAR) and Leaf Area Index (LAI) values. Dry Forest presented a faster rate of green-up in the beginning of the rainy season and more abrupt changes in LAI values earlier in the dry season than the other physiognomies. In relation to the nadir response, the strongest anisotropy was observed in the backward scattering direction and in the red band at large Sun zenith angles. Directional effects were also observed after the Normalized Difference Vegetation Index (NDVI) determination. Classification accuracy of vegetation improved from the rainy to the dry season. The exception was Park Savanna, which was also well discriminated from the other physiognomies in the beginning of the rainy season due to the spectral effects of non-photosynthetic vegetation (dry grass understore) that produced an increase in the red reflectance. In general, classification accuracy of the physiognomies improved also from the forward to the backward scattering direction. The best view angles for classification purposes ranged from 0° (nadir) to − 45.6°, and were associated with viewing directions of maximum backscattering at the different dates. In comparison with single view direction results, the use of Anisotropy Index (ANIX) images produced a general decrease in classification accuracy values. Results indicated that off-nadir viewing can improve discrimination and mapping of major physiognomies in the Brazilian savanna environment. |
| Área | SRE |
| Arranjo | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Variations in reflectance... |
| Conteúdo da Pasta doc | acessar |
| Conteúdo da Pasta source | não têm arquivos |
| Conteúdo da Pasta agreement | não têm arquivos |
| 4. Condições de acesso e uso | |
| Idioma | en |
| Arquivo Alvo | lenio2007.pdf |
| Grupo de Usuários | administrator banon marciana |
| Visibilidade | shown |
| Política de Arquivamento | denypublisher denyfinaldraft12 |
| Permissão de Leitura | deny from all and allow from 150.163 |
| Permissão de Atualização | não transferida |
| 5. Fontes relacionadas | |
| Unidades Imediatamente Superiores | 8JMKD3MGPCW/3ER446E |
| Divulgação | WEBSCI; PORTALCAPES; MGA; COMPENDEX. |
| Acervo Hospedeiro | sid.inpe.br/banon/2001/04.06.10.52 |
| 6. Notas | |
| Campos Vazios | alternatejournal archivist callnumber copyholder copyright creatorhistory descriptionlevel e-mailaddress electronicmailaddress format isbn lineage mark mirrorrepository month nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup resumeid rightsholder schedulinginformation secondarydate secondarymark session shorttitle sponsor subject tertiarymark tertiarytype typeofwork url |
| 7. Controle da descrição | |
| e-Mail (login) | marciana |
| atualizar | |