Geoscience Reference
In-Depth Information
Fig. 13.2
SPOT 5 scene 15th July 2006 covering the West of Ireland
data encoding as
int16
and include
-milli 1
to convert to milli reflectance and
discards < 1e-4 digits.
otbcli_OpticalCalibration -in imagery.tif -out imagery_toa.tif
→
int16 -milli 1 -level toa
To correct the SPOT5 scene to TOC, we use the maritime aersol model given that
the SPOT5 scene is located on the west coast of Ireland. We retrieve the following
atmospheric parameters from AERONET:
•
Amount of ozone (
atmo.oz
)
•
Water vapour amount (
atmo.opt
)
•
Atmospheric Pressure (
atmo.pressure
)
•
Optical Thickness (
atmo.opt
)
otbcli_OpticalCalibration -in spot5_scene.tif -out
→
imagery_toc.tif int16 -milli 1 -level toc -atmo.aerosol
→
maritime -atmo.oz 0.01 -atmo.wa 2.081 -atmo.pressure 1019
→
-atmo.opt 0.2
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