I want to classify an Aster image using the ASTER Spectral Library - Version 2.0 Anyone here ever done this? Any suggestions?

Note: I'm using opensource GIS and Remote Sensing software



You can use it for linear spectral unmixing. You can find some literature about this here:


NB: I have written a linear spectral unmixing (i.spec.unmix) for GRASS GIS in 1999, it is available in GRASS Addons but needs some updates for GRASS 6.

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  • Where can I find i.spec.unmix? – vascobnunes Jun 15 '12 at 15:22
  • You can find it here: grass.osgeo.org/wiki/Addons#i.spec.unmix but as mentioned, it requires some C programming. Volunteers welcome (I currently don't find the time)... – markusN Jun 16 '12 at 8:37
  • But what exactly do you mean by "linear spectral unmixing"? – vascobnunes Jun 18 '12 at 9:56
  • (Linear) spectral unmixing is a technique used to decompose pixelwise a source spectrum information (multi- or hyperspectral data) into a set of given endmember spectra which you can either obtain from the image itself or from a spectral library. For literature, see the link above. – markusN Jun 18 '12 at 13:35

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