sure! thx On Wednesday, March 6, 2019 at 4:43:31 PM UTC+1, Poughon Victor wrote: > > Hi Jens, > > Could you post your question on our new users forum? You will probably get > more answers there: > https://forum.orfeo-toolbox.org/ > > thanks! > > Victor Poughon > ------------------------------ > *De :* [email protected] <javascript:> [[email protected] > <javascript:>] de la part de Jens Oldeland [[email protected] > <javascript:>] > *Envoyé :* mercredi 6 mars 2019 16:22 > *À :* otb-users > *Objet :* [otb-users] High albedo problems during OpticalCalibration > > I have a WorldView 2 scene from an arid region of South Africa where I > want to map Quartz fields. These are areas where quartz stones are forming > large patches with mostly without "visible" vegetation. I used the > *otbcli_OpticalCalibration *Tool to transform the DNs to reflectances per > pixel (=TOA). my code: > > otbcli_OpticalCalibration ^ > -in c:\Users\BAF1858\Downloads\059176997010_01\MUL\17APR11091403-M2AS- > 059176997010_01_P001.TIF ^ > -out c:\Users\BAF1858\Downloads\059176997010_01\MUL\17APR11091403-M2AS-TOA > .TIF ^ > -level toa ^ > -atmo.aerosol desertic > > I could have also entered all the information from the metadata-file, but > the result is the same. > > The problem is now that there are many "blue spots" in the TOA-image (the > lower image), but only where the albedo is high. Does anybody have an idea > why this is so, and how one could get rid of these errors? I was thinking > of smoothing or so, but maybe someone knows a fix for the calibration tool? > > > > [image: Errors_TOA.gif] > > -- > This mailing will be abandoned soon in favor of a more friendly forum: > https://forum.orfeo-toolbox.org > Thanks to visit it for any question related to Orfeo Toolbox (OTB) usage, > or to check the OTB FAQ: > http://www.orfeo-toolbox.org/FAQ.html > --- > You received this message because you are subscribed to the Google Groups > "otb-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] <javascript:>. > For more options, visit https://groups.google.com/d/optout. >
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