I am new to slicer. Working on segmentation using the SegmentEditorExtraEffects on Slicer build 4.10.2 on a Mac running 10.13.6.
I am trying to use flood filling to create a segmentation. I create a new segment, choose Flood Filling and leave default values (Int Tol 10, Neighborhood 1) and click on a pixel in the axial slice, get the spinning wheel but nothing happens (no region is selected for the segment). I change around the values and click and sometimes it processes with nothing happening and other times it gets stuck processing.
What does the “neighborhood size” parameter mean? What does increasing/decreasing it do?
Ultimately, I am trying to create a segment for a region where the intensity is above a certain value (a tumor region), but trying to avoid another region where there is also high intensity (other organs). Perhaps I should try another tool, like watershed, but I can’t figure out how to use that one.