At:
http://mapserver.sara.nl/downloads/gdal_tps.png
you can see a screenshot of the original image (right) and the
georeferenced one (left, rotated almost 90 degrees). The red markers
with the number 3 inside them show one of the control points: to the
right the scan pixel (5023/3421), to t
Thanks Peter, good points. One further question: even if the
georeferenced map as a whole is distorted due to too few control points,
the control points *themselves* should always be projected to their
exact specified georeferenced location, right? At least that is wthat I
thought was the diffe
Jan,
the number of points required will depend upon the nature of the deformation
in the originals. You need sufficient control points to ensure that the
algorithm can sort things out, so relatively more points are required in the
deformed areas. However, although I've not used the GDAL T
It should work... Perhaps you can share how to reproduce what you see
Le Saturday 01 May 2010 00:17:06 Jan Hartmann, vous avez écrit :
> 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 tran
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-coordinat
Bhaskar,
Some sample data would come in handy.
On Tue, Sep 15, 2009 at 4:44 PM, spbhasker bachi wrote:
> http://osdir.com/ml/gis.gdal.devel/2005-07/msg7.html
>
> Hi..
>
> Used the code from the above Link and Generated the Output using TPS.
>
> The Output Data generated is Coming in a Straig
http://osdir.com/ml/gis.gdal.devel/2005-07/msg7.html
Hi..
Used the code from the above Link and Generated the Output using TPS.
The Output Data generated is Coming in a Straight Line..
All my Data is getting skewed up and coming in a straight Line..
Can anyone help me out
Bhasker
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