In order to determine volumes, it's necessary to know elevations at various points. How can this be determined accurately from vertical images? Would it help with accuracy to include oblique views?
If there is a large pile like a cone that and you draw a polygon around an area about half way up the cone, as if that polygon were to slice off the top of it, is the volume that's determined that part that is sliced off, or does it include the volume below it going down to the surface (constrained by the polygon)?
If there is a large pile like a cone that and you draw a polygon around an area about half way up the cone, as if that polygon were to slice off the top of it, is the volume that's determined that part that is sliced off, or does it include the volume below it going down to the surface (constrained by the polygon)?
