DELINEAMENTO AMOSTRAL EM RESERVATÓRIOS UTILIZANDO IMAGENS LANDSAT-8/OLI: UM ESTUDO DE CASO NO RESERVATÓRIO DE NOVA AVANHANDAVA (ESTADO DE SÃO PAULO, BRASIL)

O uso do sensoriamento remoto voltado para a determinacao de amostras de campo e de grande valia para estudos ambientais, uma vez que as imagens de satelite apresentam atributos capazes de avaliar a variabilidade espectral da superficie da agua considerando uma area extensa. Desse modo, a abordagem deste trabalho objetiva definir um metodo de selecao estratificada de amostras baseada na variabilidade de imagens no espectro do visivel e infravermelho oriundos do sensor Landsat-8/OLI. O metodo conta com a utilizacao de dados raster que representam o desvio padrao de uma serie temporal de imagens Landsat-8/OLI e em seguida a definicao automatica de pontos de campo apoiada na tecnica de amostragem estratificada aleatoria. A escolha da imagem que deu origem a selecao dos pontos foi baseada na componente de maior variabilidade espectral por meio da tecnica de Principal Componente. Como resultado foram obtidos vinte pontos representativos de um total de seis classes espectralmente semelhantes.

• Publication year

  2016

• Venue

  Boletim De Ciencias Geodesicas

• Publication date

  2016-06-29

• Fields of study

  Not labeled

• Identifiers
  DOI 10.1590/S1982-21702016000200017
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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