I am processing a project over a lake with Pix4D and I made my orthomosaic.
I also have a very accurate image taken from an airplane and I would like to do an accuracy assessment between this real image and my orthomosiac obtained from Pix4D.
My question is that how can I do an accuracy assessment based on this image? I mean how can I compare my orthomosaic from Pix4D with a real accurate image in terms of GCPs, distances, etc?
I appreciate any help from you.