We use manually installed GCP's since we do not have RTK on our drones either. I ran the AT with the GCP's due to the huge dataset which takes a good few hours to run AT on our computer. Currently processing the AT with the "Keep camera calibration' settings and will see how it goes. A trial run of a part of the model without GCP's ran fine (AT+ Production). Our dataset mainly consists of grid patterns of 90 deg and 45 deg taken with a DJI GO4 app and manual orbits around some of the structures. I wonder if combining the manual orbits with the grid patterns is somehow affecting the overlap? I am just spit balling.
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