I have been suggested to write this post to point your attention to a free software i'm being developing for automatic image (and 3d model!!!) georeferencing.
It is called AutoGR-Toolkit and it is based on image matching. It provides thousands of ground control points in seconds. These points can then be used in ArcGIS or QGIS (for 2D matching) and also in Agisoft Photoscan, VSfm or sfm_georef (for 3D model georeferencing).
It also gives the possibility to…Continue