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| França,Michelle M.; Fernandes Filho,Elpidio I.; Ferreira,Williams P. M.; Lani,João L.; Soares,Vicente P.. |
| ABSTRACT During image acquisition, is usually chosen scenes with a lesser cloud cover to avoid loss of spectral information. However, when training samples are collected for image classification, the user finds shadowed areas. Such situation is similar to the presence of clouds since spectral information of these classes is the same in all optical bands of the sensor. This fact becomes more pronounced in mountainous relief areas due to shadow projection on the terrain, which can vary among all seasons during the solar year. With the goal to obtain images with a lower presence of shadow, it was simulated, under the same relief conditions, shading variation in function of latitude (0° to 40° S). Solar radiation models were processed for the days and times... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Landsat; Remote sensing; Solar radiation. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000500728 |
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