I do not have the equipment to collect GCPs. I am using a Phantom 4 and have a client that would like rock stockpile volumetrics. He is not concerned about Global accuracy, however, he stated they can accommodate a 100mm variance between the base of the stockpile and the top.
Without GCPs, how do I prove that the Relative accuracy is good and within the 100mm acceptable variance level.
Is there something in the Quality Report that can be used to prove the Relative accuracy or is this impossible without GCPs?