QR codes are of no use in real workflows. It may only work if doing photos from ground as from UAV you will need to zoom-by-feet/zoom-by-altitude-drop on each of the points to be visible. They have to be unrealistic big to be visible from altitude and also it is not clear if it requires 1:1 resolution so QR code is readable or it can read QR code even it is not very clearly readable. Some more simple coded designs than QR codes would have been a better choice.
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