With the Georeference Tiepoints editor you can edit:
- a georeference tiepoints: to add coordinates to a satellite image or to a scanned photograph without using a DTM, or
- a georeference direct linear: to add coordinates to a scanned photograph while using a DTM, or
- a georeference orthophoto: to add coordinates to a scanned aerial photograph while using a DTM and camera parameters.
For more information on georeferences, see ILWIS objects : georeferences.