[gdal-dev] Polynomial warping ?

[Nicolas MERLET]

Hi all,

I'm trying to transform an image using gdal_translate to add GCPs and
gdalwarp to apply GCPs.

I'm using a jpeg grid as a demonstration. With ArcGIS, in order 2, I get
this result :
http://dev.merletn.org/gis/arcgis.jpg

With the same GCPs, gdalwarp produces this result :
http://dev.merletn.org/gis/gdalwarp.jpg

Here my GPS :
http://dev.merletn.org/gis/grid-gcp.txt

For further information, you can see my batch file :
http://dev.merletn.org/gis/batch.txt

I can't understand why GDAL does not use an order 2 polynomial
transformation. Why does results are different from each others ?

Thank you very much for helping...

Regards, Nicolas