For the restricted parcellation, we should return the mappings of each region to the coordinates of each new sub-region fragment. We can add this to RegionExtractor probably.
Yes. But I think we some how also need to make sure that the label numbering increases for each new subregion, something, like new_labels + np.max(old_labels).
For the restricted parcellation, we should return the mappings of each region to the coordinates of each new sub-region fragment. We can add this to RegionExtractor probably.