[GRASS-dev] [GRASS GIS] #3443: Weird output of 'i.atcorr' in WorldView2 red channel (band 5)

[GRASS GIS]

#3443: Weird output of 'i.atcorr' in WorldView2 red channel (band 5)
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 Reporter:  ppina                            |      Owner:  grass-dev@…
     Type:  defect                           |     Status:  new
 Priority:  normal                           |  Milestone:
Component:  Default                          |    Version:  7.2.2
 Keywords:  i.atcorr, WorldView2 - red band  |        CPU:  x86-32
 Platform:  MSWindows 7                      |
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 I performed the atmospheric correction with 6S algorithm (i.atcorr) in a
 scene of WorldView2 satellite. It works nicely on the PAN band and on 7 of
 its 8 multispectral bands. The bad one is the red channel (band 5) which
 delivered weird results in some locations of the scene (sample details in
 a file attached). I tested different parameters of the algorithm, used
 radiance and reflectance images as input, but red band ouputs of i.atcorr
 always looked weird. On the contrary, all atmospheric correction outputs
 for all other bands showed to be 'normal'. Since this only happens with
 this specific band, I wonder if there is not a bug in its processing or on
 related filter functions.

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Ticket URL: <https://trac.osgeo.org/grass/ticket/3443>
GRASS GIS <https://grass.osgeo.org>