Assessment of the discrimination ability of MERIS spectral data for burned area mapping using ROC curves

Autores/as

  • P. Oliva Pavón
  • E. Chuvieco Salinero

Palabras clave:

separability, non-parametric analysis, forest fires, satellite images

Resumen

Traditionally, the selection of the most appropriate bands to classify the target cover was supported by statistical indices that measured the discrimination ability of the spectral bands based on the Gaussian distribution assumption. However, that assumption might not be fulfilled in every instance. In this study we applied a non-parametric test (receiver operating characteristic, ROC) to measure the discrimination ability of MERIS sensor spectral bands and derived spectral indices to classify burned areas. The discrimination potential of each band was computed from the post-fire image, and from the temporal difference of the images. In both cases, the sources of confusion between burned areas and other covers were identified. The bands with higher discrimination ability were the NIR bands and the best indices were η, GEMI, BAI, α B8, α B10, DGEMI and DBAI.

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Cómo citar

Oliva Pavón, P., & Chuvieco Salinero, E. (2013). Assessment of the discrimination ability of MERIS spectral data for burned area mapping using ROC curves. GeoFocus. Revista Internacional De Ciencia Y Tecnología De La Información Geográfica, (13_2), 41–65. Recuperado a partir de https://www.geofocus.org/index.php/geofocus/article/view/287