Hi Thayse, I don't know well how the framework is implemented, but since nobody answered to your message, I will try to help here.
If you start the process with the MeanShift smoothing, you have to bear in mind that the spatial radius parameter is related to the range of the input values. The default value for this parameter in the application is 15. Try to make it something like 0.1 and see what happens. Good luck. Jordi Thayse Nery <[email protected]> wrote: > > Hi, > > I have converted DN values of Landat 8 OLI to Top of Atmosphere (ToA) > Reflectance using GRASS 7 and I would like to know if the Exact Large-Scale > Mean-Shift segmentation (LSMS) from Orfeo Toolbox works > for TOA values. > > I tried to apply all 4 steps of the LSMS using the bands with TOA values, > which output range is 0-1, and it does not work. For example for the Band 4 I > got a minimum value of -5.35928e+21 and max 0.01452. > And for LSMS step 2 a got only a black square. > > Do I need to convert the values to DN in order to apply the LSMS using Orfeo > toolbox in QGis 2.8.1? If yes, how can I convert from TOA value to DN? > > Thanks for any advice. > > Thayse Figueiredo > > > -- -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- 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]. For more options, visit https://groups.google.com/d/optout.
