I’m new in ImageJ. I’m trying to analyse a 3D porous sample. The sample is in water and there are water and air phases in the pores and want to clear the outside of the 3D object but keep the phases in the pores. This means I can’t just use the grey level threshold to select the object. And it is not a standard cylinder in the Z direction so I can’t just create a shape from one slice and cut through. Any tool or plugin in ImageJ can do this?