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Showing results for tags 'ASTER ENVI SPECTRAL'.
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Hi I tried to made spectral analisys to ASTER image. I have mi 3A level ASTER image in .hdf format. I use ENVI With ENVI I open the .hdf and ENVI make auto-correct for ASTER Radiance I re-size the SWIR band to 15m pixel I made layer stacking to VNIR_SWIR bands and convert to .BIL With the VNIR_SWIR .BIL image a made a correct atmospheric correction with FLAASH to convert radiance to reflectance I resample te USGS spectral library to ASTER I use the mapping method Spectral angled mapper I change the Y scale from the spectral library to 10000 to si the values 10*4 to have the same values from my image Z values for spectrum I select for example from the spectral library Kaoli to use in spectral angle mapper and in Maximun angle (radiand) I change to 1 because in .100 this dont show me nothign in SAM classification But the problem is for the al spectral I made this show me the same pixels
