Topic: Tie points to GCPS problem
I am trying to orthorectify and resample two SPOT 5 images (2006 and 2007). I begin with COSI-Corr.
I did the orthorectication/resampling step between my first image (2006) and a shaded DEM. It was ok. Then I selected 15 tie points between ortho2006 (the orthorectified one) and my second, raw image (2007). When I try to convert my set of tie points into GCPS, I got an error message if I use a DEM (I selected the real DEM, not the shaded one) :
"SYSTEM ERROR : TPOINTS_TO_GCPS--> Variable is undefined: TEXT."
If I do not select a DEM, no error message.
If I select 2006 image (not orthorectified) as my reference image, it works, but it says that my tie points are all outside the DEM...
An idea? Thank you in advance and have a nice day.