I am using a Mavic 2 Pro for surveying gravel stockpiles to calculate volumes. I’m still learning and have been using all default settings for the camera. The piles are generally less than 15 m high, and I’ve been flying at 75 m altitude, which is about 2 cm/pixel.
I often find that it is difficult to identify the edges of the piles in the app, particularly with crushed rock. As the loaders work around the piles there tends to be material spread around the pile and it all looks white in the image. I’ve taken to walking around the pile with a spray can marking the edge periodically. Blue seems to work best. But I’m hoping different camera/processing parameters might yield more contrast.
Absent the paint dots I’ve found the most useful way of identifying the edges of the pile is by fiddling with the elevation view. An option to colour by slope rather than elevation would be the cat’s pyjamas.
Any other ideas?