Dear ImageJ community,
I am quite new using Image J and I am stuck trying to segment this image. My first goal is to be able to isolate the whole roughly-round-shape grain from the air (homogeneous environment around it) and the capillary (perfect circles on the outer edge) because I want to calculate its volume (I have 600 sections similar to this one), and then quantifying minerals in it.
I tried different combinations of processing steps but I didn’t find anything satisfying yet.
Is there an easy solution that appears clearly to you by any chance?
Here are 4 section images of the volume: