A number of options are available to refine regions of interest and multi-ROIs. These include the following:
Process Islands*… The Process Islands options — Remove and Isolate by voxel count or rank — let you refine threshold segmentation results or to isolate objects of a certain size (see Processing Islands).
Remove Voxels Below Local Center of Range*… Lets you minimize beam hardening effects.
Close Holes Smaller Than*… Lets you close pores and inner holes that are smaller than a selected threshold distance, which is selectable in the Threshold dialog
Remove Objects That Touch Another ROI or Multi-ROI… Automatically removes objects, which can be defined as groups of labeled voxels that are connected, within the current region of interest that intersect with a selected ROI or multi-ROI.
Create ROI Using Neighbor Count*… Creates a new region of interest that contains only labeled voxels with an original neighbor count greater than or equal to a selected threshold. Thresholds are selectable in the Neighbor Count dialog.
Remove Empty Labels**… Removes all labels that do not contain any labeled voxels.
* Available only for regions of interest.
** Available only for multi-ROIs.
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