[GRASS-user] i.atcorr with Landsat 8

[Nikos Alexandris]

* Micha Silver <micha at arava.co.il> [2015-05-23 10:05:14 +0300]:

>    When doing atmospheric correction with i.atcorr on LandSat 8 images (after
>    i.landsat.toar), is it correct to set range="0,65535"?

Hi Micha.

After i.landsat.toar you will have either Radiance or Reflectance. For
both the 11-bit range suggested above is not valid I think.

In the metadata file the minimum and maximum values for spectral radiance are
reported (watts / m^2 * ster * microns). As for the reflectance, it is
unitless and should, in theory, range in [0, 1.0]. Though, outliers are
sometimes expected.

Nikos