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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agricultura Digital. Para informações adicionais entre em contato com cnptia.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital. |
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Data corrente: |
09/11/2006 |
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Data da última atualização: |
17/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ESQUERDO, J. C. D. M.; ANTUNES, J. F. G.; BALDWIN, D. G.; EMERY, W. J.; ZULLO JÚNIOR, J. |
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Afiliação: |
JÚLIO CÉSAR DALLA MORA ESQUERDO, Cepagri/Unicamp; JOÃO FRANCISCO GONÇALVES ANTUNES, CNPTIA; University of Colorado; University of Colorado; Cepagri/Unicamp. |
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Título: |
An automatic system for AVHRR land surface product generation. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
International Journal of Remote Sensing, v. 27, n. 18, p. 3925-3942, 2006. |
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DOI: |
http://dx.doi.org/10.1080/01431160600763956 |
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Idioma: |
Inglês |
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Conteúdo: |
Making products from the Advanced Very High Resolution Radiometer (AVHRR) on board the National Oceanic and Atmospheric Administration (NOAA) polar-orbiting satellites can be time consuming and an automated technique for image processing is required to generate long time series of AVHRR imagery. This paper aims to describe the development of a system for fully-automated AVHRR image processing, including radiometric calibration, precise geo-registration and generating land-surface products, such as vegetation indices, maximum value composites and cloud masks. Tests for crop monitoring purposes were carried out using High Resolution Picture Transmission (HRPT) images between October 2003 and April 2004. The region used to evaluate the system was the State of Paraná, one of the primary soybean producers in Brazil. Results have shown that for severely cloud-filtered images, the system was effective in generating geometrically precise image products, with geolocation errors less than a pixel. The developed system can be operated with no human intervention and can be used as an important tool for NOAA-AVHRR image users especially those who need to use long time series. |
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Palavras-Chave: |
NOAA-AVHRR; Processamento de imagens. |
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Thesaurus Nal: |
Image analysis. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01865naa a2200217 a 4500
001 1009191
005 2020-01-17
008 2006 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1080/01431160600763956$2DOI
100 1 $aESQUERDO, J. C. D. M.
245 $aAn automatic system for AVHRR land surface product generation.$h[electronic resource]
260 $c2006
520 $aMaking products from the Advanced Very High Resolution Radiometer (AVHRR) on board the National Oceanic and Atmospheric Administration (NOAA) polar-orbiting satellites can be time consuming and an automated technique for image processing is required to generate long time series of AVHRR imagery. This paper aims to describe the development of a system for fully-automated AVHRR image processing, including radiometric calibration, precise geo-registration and generating land-surface products, such as vegetation indices, maximum value composites and cloud masks. Tests for crop monitoring purposes were carried out using High Resolution Picture Transmission (HRPT) images between October 2003 and April 2004. The region used to evaluate the system was the State of Paraná, one of the primary soybean producers in Brazil. Results have shown that for severely cloud-filtered images, the system was effective in generating geometrically precise image products, with geolocation errors less than a pixel. The developed system can be operated with no human intervention and can be used as an important tool for NOAA-AVHRR image users especially those who need to use long time series.
650 $aImage analysis
653 $aNOAA-AVHRR
653 $aProcessamento de imagens
700 1 $aANTUNES, J. F. G.
700 1 $aBALDWIN, D. G.
700 1 $aEMERY, W. J.
700 1 $aZULLO JÚNIOR, J.
773 $tInternational Journal of Remote Sensing$gv. 27, n. 18, p. 3925-3942, 2006.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
28/12/2012 |
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Data da última atualização: |
19/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
SALIS, S. M. de; LEHN, C. R.; PADILHA, D. R. C; MATTOS, P. P. de. |
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Afiliação: |
SUZANA MARIA DE SALIS, CPAP; CARLOS RODRIGO LEHN, INSTITUTO FEDERAL DE EDUCAÇÃO, CIÊNCIA E TECNOLOGIA DE MATO GROSSO DO SUL; DALY ROXANA CASTRO PADILHA, Bióloga - Embrapa Pantanal; PATRICIA POVOA DE MATTOS, CNPF. |
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Título: |
Changes in the structure due to strong winds in forest areas in the Pantanal, Brazil. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Cerne, Lavras, v. 18, n. 3, p. 387-395, jul./set. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
The Pantanal climate presents marked seasonality and eventually strong winds occur, especially in the beginning of the rainy season, which may last from September or October until April. A phytosociological study was conducted to evaluate the effects of a strong wind on the composition and structure of two forest formations in Pantanal wetland, a semideciduous forest (19º 15’ 32’’S and 55º 45’ 23.7’’W) and a forested savanna - “cerradão” (19° 17’ 21’’S and 55º 45’ 8.9’’W), with trees with diameter at breast height (DBH) ? 5 cm. After the strong wind, a reduction of 6% of the basal area and volume in the semideciduous forest was observed, mainly due to the uprooting of Xylopia aromatica trees. In the forested savanna, the basal area and volume reduction was even higher; an estimated 10%, representing 69 uprooted trees per hectare, mainly of Copaifera martii trees. In both areas it was observed that the uprooted trees presented an average height and diameter bigger than the trees that remained intact. Usually, the trees that were uprooted presented higher wood density and the species that had broken branches had a lower density. |
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Palavras-Chave: |
Cerradão; Distúrbio natural; Floresta semidecídua. |
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Thesagro: |
Área Basal; Floresta. |
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Thesaurus NAL: |
Pantanal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72838/1/PatriciaP-CERNE-Changes.pdf
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Marc: |
LEADER 01814naa a2200229 a 4500
001 1943621
005 2015-02-19
008 2012 bl uuuu u00u1 u #d
100 1 $aSALIS, S. M. de
245 $aChanges in the structure due to strong winds in forest areas in the Pantanal, Brazil.
260 $c2012
520 $aThe Pantanal climate presents marked seasonality and eventually strong winds occur, especially in the beginning of the rainy season, which may last from September or October until April. A phytosociological study was conducted to evaluate the effects of a strong wind on the composition and structure of two forest formations in Pantanal wetland, a semideciduous forest (19º 15’ 32’’S and 55º 45’ 23.7’’W) and a forested savanna - “cerradão” (19° 17’ 21’’S and 55º 45’ 8.9’’W), with trees with diameter at breast height (DBH) ? 5 cm. After the strong wind, a reduction of 6% of the basal area and volume in the semideciduous forest was observed, mainly due to the uprooting of Xylopia aromatica trees. In the forested savanna, the basal area and volume reduction was even higher; an estimated 10%, representing 69 uprooted trees per hectare, mainly of Copaifera martii trees. In both areas it was observed that the uprooted trees presented an average height and diameter bigger than the trees that remained intact. Usually, the trees that were uprooted presented higher wood density and the species that had broken branches had a lower density.
650 $aPantanal
650 $aÁrea Basal
650 $aFloresta
653 $aCerradão
653 $aDistúrbio natural
653 $aFloresta semidecídua
700 1 $aLEHN, C. R.
700 1 $aPADILHA, D. R. C
700 1 $aMATTOS, P. P. de
773 $tCerne, Lavras$gv. 18, n. 3, p. 387-395, jul./set. 2012.
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Embrapa Florestas (CNPF) |
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