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Hi,
I also think it is a no-data management issue. The
Orthorectification application uses a specific background value
when there is no data for the resampled position (for instance, at
the corners of the orthorectified image). This background value is
set as a no-data flag in the output geotiff. By default this
background value is 0 (you can set it with the parameter
outputs.default). It could be that some pixels in the shadow
regions also have a null value, so they behave as no-data.
You can either change the background value, or remove the no-data
flag from the output geotiff.
Regards,
Guillaume
Hi all,
i have a little problem problem to orthorectify my pleiade data
with Orfeo toolbox:
Orthorectification process generate some no data pixel into the
pleiade data ( I joined a jpg to illustrate this)
This is my workflow:
- i open my bundle product (raw data)
- I do an optical calibration on both Pan and MSI
otbcli_OpticalCalibration -in %PAN% -out %OUT%PAN_TOC.TIF uint16
-level toc -milli 1 -ram 15000
otbcli_OpticalCalibration -in %MS% -out %OUT%MS_TOC.TIF uint16
-level toc -milli 1 -ram 15000
- i perform a bundle to perfect sensor
otbcli_BundleToPerfectSensor -inp %OUT%PAN_TOC.TIF -inxs
%OUT%MS_TOC.TIF -mode phr -out %OUT%BUNDLE.TIF uint16 -ram 15000
-elev.geoid %GEOID% -elev.dem %DEM4326%
At this step my product is ok, with good radiometric values...
and then i try to orthorectify
-Orthorectification:
otbcli_OrthoRecTIFication -io.in
"%OUT%BUNDLE.TIF?&skipcarto=true" -io.out
%OUT%BUNDLE_ORTHO.TIF uint16 -interpolator bco
-interpolator.bco.radius 4 -outputs.mode auto -opt.ram 15000
-elev.dem %DEM3163% -elev.geoid %GEOID% -map.epsg.code %EPSG%
My elevation data is ok, and i also try with SRTM data, but i
had the same result...
I think it's a problem with no data management, because all the
no data pixel are situated in the shadowed part of hillshade.
If someone have an idea to help me...
Thank you very much
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Guillaume PASERO
Responsable technique
Business Unit E-SPACE & Geo Information -
Département Image & Applications
CS Systèmes d'Information
Parc de la Grande Plaine - 5, Rue Brindejonc des
Moulinais - BP 15872
31506 Toulouse Cedex 05 - FRANCE
+33 561 17 64 21 - [email protected]
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