[GRASS-user] Georrectification using points

[Hamish]

Luisa wrote:
> I have a few very-high resolution images that I need to 
> georrectify in GRASS. Outside GRASS I created a text file with
> GCP position in the image and its real-coordinates.
> I have read this: http://grass.osgeo.org/wiki/Georeferencing
> I tried to use i.rectify but I didn't see no place to
> define/add GCP's. And the manual is not clear regarding where
> to insert the points... Can anyone help me?

you can add to the POINTS file manually (create some dummy test,
points to see the simple text file format), or maybe more easily
use gdal_translate to add the GCPs to a geotiff then import 
that.


Hamish