The -tps option can only be used with control points added to an
unreferenced raster. It's done this way:
gdal_translate \
-gcp scanx1 scany1 worldx1 wordy1 \
-gcp scanx2 scany2 worldx1 worldy1 \
... etc \
in.tif out.tif
gdalwarp -tps out.tif world.tif
A georeferenced raster cannot have additional control points, so you can
not warp it further with -tps. The only way to use thin plate spline
interpolation is to compute the control points in the original scan
coordinate sytem. Not very easy!
Jan
On 29-8-2013 17:14, laura0 wrote:
Hi André,
my geotiff is already georeferenced (yes I used gdaltranslate previously)
and also projected. I would like to know how thin plate spline interpolation
works using the -tps gdalwarp option.
Regards,
Laura
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