Hi Dino,
I'm from Italy too...attached you'll a find a pto file. Save it in the
folder with your three images and open it in Hugin. Check the fast preview
window and you'll see the results.
For details on how I made it, check this tutorial:
Hey, thanks for sharing the pictures. Loved them, big and sharp. :)
Very big - 446.8MB per image! What kind of drone/camera did you use?
The focal length Hugin PTO Generator came up with was 34.607 with a
multiplier of 1.
I stitched all 4 of them, full sized, in Hugin on my Linux laptop.
