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[Segmentation] Multiple Segmentations under one parent node aren't displayed
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Description

When you create multiple segmentations under one parent node, only the segmentation with the highest layer is displayed.

Steps to reproduce:

  • Load an image
  • Create two segmentations for the image with the 2D Add tool

If the two segmentations are set to the same layer in the properties, both are shown but overlayed areas are not shown in different opacities.
If you turn off the image node, the segmentations are shown correctly.

Event Timeline

kahl triaged this task as High priority.Jan 9 2020, 1:27 PM
kahl created this task.
kislinsk edited projects, added MITK (2018-04-4); removed MITK.Jan 9 2020, 2:52 PM
kislinsk edited projects, added MITK; removed MITK (2018-04-4).Feb 11 2020, 4:42 PM
kislinsk edited projects, added MITK (2020); removed MITK.Apr 15 2020, 7:14 AM
kislinsk moved this task from Backlog to Segmentation on the MITK (2020) board.

I just found out the following:

  • perform both steps as written in the description
  • change the layer of one of the two segmentations such that one segmentation is on the same layer as the parent node (the other segmentation should still have a layer above the parent node),

e.g. from

ParentNode: Layer 4
 Segmentation1: Layer 5
 Segmentation2: Layer 7

to

ParentNode: Layer 4
 Segmentation1: Layer 5
 Segmentation2: Layer 4
  • see how both segmentations are visible with overlapping area
floca added a subscriber: floca.Fri, May 22, 9:34 PM

I guess that will be something that has to be fixed in the mapper. When looking into it, may be you also see the reason for T25445: MultiLabel segmentation mapper is very slow would be great.