The otbProjection of the input image (MOD13Q1 product) is instanciated with errors, which explain why reprojection fails. Why is the projection so bad? Apparently this comes from the fact that the datum is unknown by OSSIM (See this topic <https://groups.google.com/forum/?fromgroups#%21topic/otb-users/RuCoBV0ZWl8>).
Indeed, ossim-info fails to find that the datum is custom with a zero-valued flattening parameter (ossim-info prints that major-axis is not equal to minor-axis, that's wrong). So the problem described in this topic seems to be 100% related to OSSIM (By the way proj4 does not seems to be related to this issue becaus GDAL/OGR have no problem to deal with the MOD13Q1 custom projection wkt) If I have the time I will try to find something to fix this. (If someone has knowledge to share here about OSSIM templates/factories/geometry files, it could be nice!) Cheers, Rémi Le mardi 4 novembre 2014 14:19:21 UTC+1, Raúl Nanclares a écrit : > > Open the image with a viewer and zoom until you see the shape of the > pixels. > El nov 4, 2014 3:36 AM, "remicres" <[email protected] <javascript:>> > escribió: > >> >> >> Le vendredi 31 octobre 2014 16:45:02 UTC+1, Raúl Nanclares a écrit : >>> >>> Remi that's the correct definition for the GCS, though it says spheroid >>> it's a ellipsoid. You have the radius and the flattening parameter (f = >>> 1/298.257223563). >>> >>> You have different GSD in the two images that may be causing the >>> difference in origin. ¿Can you please check the shape of your pixels? If i >>> recall correctly when you reproject MODIS using other tools than the ones i >>> mentioned before you get parallelogram-shaped pixels not squares. >>> >> >> Sorry... How can I check the shape of my pixels? >> >> -- >> -- >> 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] >> <javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> 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 a topic in the >> Google Groups "otb-users" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/otb-users/WmeCNAICeww/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > -- -- 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.
