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Registro Completo |
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Biblioteca(s): |
Embrapa Agroindústria de Alimentos. |
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Data corrente: |
25/11/2002 |
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Data da última atualização: |
25/11/2002 |
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Autoria: |
CORREA, T. B. S.; BITTENCOURT, A. M.; FARIAS, A. X.; FREITAS-SILVA, O.; COSTA, L. S. |
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Título: |
Toxigenic potencial of Aspergillus ochraceus isolated from green coffee of the Brazilian cerrado. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: INTERNATIONAL IUPAC SYMPOSIUM ON MYCOTOXINS AND PHYCOTOXINS, 10., 2000, Guaruja, Sao Paulo. Official program and abstracts...Sao Paulo: Instituto Adolfo Lutz, 2000. p.184. |
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Idioma: |
Inglês |
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Palavras-Chave: |
Cafe verde. |
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Thesagro: |
Cerrado; Contaminação. |
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Thesaurus Nal: |
Aspergillus ochraceus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00730naa a2200205 a 4500
001 1413940
005 2002-11-25
008 2000 bl --- 0-- u #d
100 1 $aCORREA, T. B. S.
245 $aToxigenic potencial of Aspergillus ochraceus isolated from green coffee of the Brazilian cerrado.
260 $c2000
650 $aAspergillus ochraceus
650 $aCerrado
650 $aContaminação
653 $aCafe verde
700 1 $aBITTENCOURT, A. M.
700 1 $aFARIAS, A. X.
700 1 $aFREITAS-SILVA, O.
700 1 $aCOSTA, L. S.
773 $tIn: INTERNATIONAL IUPAC SYMPOSIUM ON MYCOTOXINS AND PHYCOTOXINS, 10., 2000, Guaruja, Sao Paulo. Official program and abstracts...Sao Paulo: Instituto Adolfo Lutz, 2000. p.184.
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Registro original: |
Embrapa Agroindústria de Alimentos (CTAA) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
04/10/2011 |
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Data da última atualização: |
03/05/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SANCHES, I. D. A.; ANDRADE, R. G.; QUARTAROLI, C. F.; RODRIGUES, C. A. G. |
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Afiliação: |
IEDA DEL'ARCO SANCHES, Bolsista/CNPM; RICARDO GUIMARAES ANDRADE, CNPM; CARLOS FERNANDO QUARTAROLI, CNPM; CRISTINA APARECIDA G RODRIGUES, CNPM. |
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Título: |
Análise comparativa de três métodos de correção atmosférica de imagens Landsat 5 - TM para obtenção de reflectância de superfície e NDVI. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 15., 2011, Curitiba. Anais... São José dos Campos: INPE, 2011. |
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Páginas: |
p. 7564-7571. |
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Idioma: |
Português |
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Conteúdo: |
The present study has compared three methods of atmospheric correction, two dark object subtraction (DOS) methods and one method based on the fourth component of the tasseled cap transformation (TC4), to obtain reflectance and NDVI values of Landsat 5 ? TM satellite images. For each atmospheric correction method, reflectance and NDVI values of five targets (crop/pasture, forest, straw, bare soil and water) were analyzed in three images (Landsat path-row 222-75). The study area is localized in the west of Sao Paulo State, Brazil. The images were acquired on 29/10/2009, 02/02/2010 and 26/06/2010 with solar zenith angles of 28°, 34° and 55°, correspondingly. The TC4 was the only method which eliminated the haze in the image, but it is not recommended if the objective is to obtain reflectance values. The DOS methods did not removed the image haze but performed reasonably to obtain reflectance values. For the visible bands, both DOS methods analyzed performed well. The DOS method which considered the atmospheric transmittance (DOS2), although more indicated to correct the infrared bands, it is dependent of the image solar zenith angle. The image acquired under a zenith angle of 55°, after been corrected using the DOS2 method, presented reflectance values overestimated. Without the atmospheric correction the NDVI of vegetation targets tended to be underestimated. |
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Palavras-Chave: |
Ângulo zenital; Estudos multitemporais; Subtração do pixel escuro; Transformação tasseled cap. |
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Thesagro: |
Sensoriamento Remoto. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42866/1/Ricardo-SBSR.pdf
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Marc: |
LEADER 02178nam a2200217 a 4500
001 1902348
005 2019-05-03
008 2011 bl uuuu u00u1 u #d
100 1 $aSANCHES, I. D. A.
245 $aAnálise comparativa de três métodos de correção atmosférica de imagens Landsat 5 - TM para obtenção de reflectância de superfície e NDVI.
260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 15., 2011, Curitiba. Anais... São José dos Campos: INPE$c2011
300 $ap. 7564-7571.
520 $aThe present study has compared three methods of atmospheric correction, two dark object subtraction (DOS) methods and one method based on the fourth component of the tasseled cap transformation (TC4), to obtain reflectance and NDVI values of Landsat 5 ? TM satellite images. For each atmospheric correction method, reflectance and NDVI values of five targets (crop/pasture, forest, straw, bare soil and water) were analyzed in three images (Landsat path-row 222-75). The study area is localized in the west of Sao Paulo State, Brazil. The images were acquired on 29/10/2009, 02/02/2010 and 26/06/2010 with solar zenith angles of 28°, 34° and 55°, correspondingly. The TC4 was the only method which eliminated the haze in the image, but it is not recommended if the objective is to obtain reflectance values. The DOS methods did not removed the image haze but performed reasonably to obtain reflectance values. For the visible bands, both DOS methods analyzed performed well. The DOS method which considered the atmospheric transmittance (DOS2), although more indicated to correct the infrared bands, it is dependent of the image solar zenith angle. The image acquired under a zenith angle of 55°, after been corrected using the DOS2 method, presented reflectance values overestimated. Without the atmospheric correction the NDVI of vegetation targets tended to be underestimated.
650 $aSensoriamento Remoto
653 $aÂngulo zenital
653 $aEstudos multitemporais
653 $aSubtração do pixel escuro
653 $aTransformação tasseled cap
700 1 $aANDRADE, R. G.
700 1 $aQUARTAROLI, C. F.
700 1 $aRODRIGUES, C. A. G.
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Registro original: |
Embrapa Territorial (CNPM) |
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