BUG: Isolate Largest Feature Filter may not actually be doing anything?

[imikejackson]

Tried to use this filter on some pretty obvious data and it had no effect or at least not the effect that I was expecting.

I would expect that in the following images, the "holes" in the interior of the white feature would have been filled in with a different value for the mask than the exterior of the white feature.

Example Data File

simplnx_1144_input_file.zip

[imikejackson]

@joeykleingers After the discussion, these 2 things need to happen.

1: Add/Update the documentation to make it clear some of the assumptions that are made about the data
2: Investigate the included data set as to why the holes are not filled in by cropping out a section in the "middle" of the data set.