|
|
|
|
| |
|
| |
|
|
OLIVEIRA, D. P. de; PULIDO, J.; FRANCHESCHINI, M. H. D.; COSTA, P. A. da; ARRUDA, G. P. de; DEMATTÊ, J. A. M.; SOUZA FILHO, C. R. de; VICENTE, L. E.. |
Data obtained with hyperspectral remote sensors have the advantage of containing a great spectral resolution, offering more details about spectral behavior of a particular target. The use of these images show high potential to describe soil mineralogical attributes. The main objective of this study was to obtain the spectral and mineralogical attributes of soils using hyperspectral satellite imagery and with data acquired at ground level; evaluation of a supervised classification routine for determination of soils texture; and estimate clay using multivariate analysis. Soil samples were collected at a 0-20cm depth and spectral measurements, texture and mineralogy analysis were made. Using GIS software, image processing and statistical packages, the... |
Tipo: Anais e Proceedings de eventos |
Palavras-chave: Processamento de imagens.; Geologia; Sensoriamento Remoto.. |
Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/902332 |
| |
|
| |
|
|
VICENTE, L. E.; SOUZA FILHO, C. R. de. |
Soil characteristics provide important support for understanding transformations that occur in environmental systems. Physical characteristics and chemical compositions of soils controlled by pedogenetic processes, climatic changes and land use imply different types of environmental transformations. Reflectance spectroscopy is an alternative soil mapping technique that uses spectral absorption features between visible (VIS) and short-wave infrared (SWIR) wavelengths (0.3?2.5 μm) for determining soil mineralogy. Soil analysis by means of reflectance spectroscopy and orbital optical sensors have provided favorable results in mapping transformation processes in environmental systems, particularly in arid and semiarid climates in extra-tropical... |
Tipo: Artigo de periódico |
Palavras-chave: ASTER; Tropical terrains; Hyperspectral.; Reflectance spectroscopy; Soil minerals.. |
Ano: 2011 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/901889 |
| |
|
|
|