Hi,
I'm rubber-sheeting old, deformed maps using the thin plate spline
option of gdalwarp (-tps). My impression was that the control points
would be transformed to exactly their georeferenced locations, but in
the georeferenced image the control poimts don't quite align with the
gcp-coordinates I specified. I'm only using five points per map, so
could this be the problem? If so, how many points do I need to get the
control points on their exact location? Or are there other ways to
achieve this?
Jan
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