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Morphological closing only works on 3d Segmentation
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If one wants to close a 2d segmentation, it dissapears because the 1 slice is eroded. This is especially confusing, since erosion and diletation themselves seem to work for 2d slices.

At the very least there should be a disclaimer in the segmentation utilities checklist that a 3d segmentation is necessary for this test.

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Closing should not make 2D structures disappear. As Sebastian noted the opening filter does so as intended. On 3D images the erosion filter has the same effect on 2 structures. On 2D images the 2D filter version is used.

What Sebastian described still happened to me during the release check.
As a quick fix the user could be notified that the operation only works on 3D segmentations

kislinsk changed the task status from Invalid to Spite.Jun 27 2018, 1:32 PM
kislinsk added a project: Bulk Edit.
kislinsk changed the task status from Spite to Invalid.Jun 27 2018, 1:36 PM
kislinsk removed a project: Bulk Edit.