I made a CT scan of a rock sample and now I’m looking for a feasible approach to evaluate it (I’m new to imageJ).
The sample consists of
- White + bright grey grains [yellow circle]
- A few dark grey spherical objects [red]
- And material in-between the spherical objects, unfortunately with similar grey levels
A large portion of the white phase is located outside the spherical objects. A small fraction, however, lies inside the spherical objects [green circle]. With thresholding it is quite easy to select all the white grains and, therefore, I can easily determine the fraction of this phase in the whole sample. I have, however, difficulties to find a way to only determine the fraction of the white phase that is located inside the spherical objects. Is that possible at all with the low contrast between the spherical objects and the surrounding material? Is there a plugin that could help me? I really hope that there is a way to avoid counting them manually, so any ideas are welcome!