Hello I am writing a SegmentEditorEffect based on AbstractScriptedSegmentEditorEffect. When I call self.scriptedEffect.sourceVolumeImageData() everything works fine. However if I change the selected source volume in the segment editor the change will not be recognized and once I call self.scriptedE…

It all works well for me. For example, load two volumes, use threshold effect, select another source volume, use threshold effect. Please provide full script that I can simply copy-paste into the Python console and reproduces the behavior you reported.

Thanks for your quick reply, Andras. I tried ThresholdEffect’s and it works fine here. I don’t know why though. When I copy code and add a check to see if the sourceVolume has changed it has the same behavior. I am pretty new to slicer and python so I might be making obvious mistakes. I’ve tried …

I’ve investigated further and while the SegmentEditorThresholdEffect works as it should it has the same issue. If i change up the sourceVolumeNodeChanged method as below, I get the same behavior. Maybe I will find out where it get’s the correct data but this seems like a genuine bug to me. Have yo…

This code gives you the source volume’s image data as is: self.scriptedEffect.parameterSetNode().GetSourceVolumeNode().GetImageData() This is usually not what you need, because the source volume’s geometry (origin, spacing, axis directions, extents) may differ from the segmentation’s. This gives …

Segment editor effect sourceVolumeImageData not updated

Development

Llujoo (Matze Fabian) July 25, 2024, 12:46pm 5

Okay I found a solution. I can get the Node instead and then the image data. The node is updated.

sourceImageData = self.scriptedEffect.parameterSetNode().GetSourceVolumeNode().GetImageData()

Topic		Replies	Views
Downstream Effects of Changing SegmentEditorWidget Source Volume Development segmentation , python , segmentations , segment-editor	0	52	June 25, 2024
Automate setting source volume and geometry in Segment Editor Support segmentation	1	270	August 24, 2023
Slicer Local Threshold Scripted Effect Error Development	8	597	July 10, 2020
Automating segmentation on volumes Support	19	4140	December 30, 2019
Modify segment directly using Python Development	1	565	August 3, 2019

Segment editor effect sourceVolumeImageData not updated

Related topics