Hello, I am using this script example and its already working fine for the threshold step I needed to segment my data. I need also to apply the Scissors circle effect, from the axial view, using the following options: operation: erase outside; shape: circle slice cut: unlimited I already have the…

Thank you Andras. I still stuck on how to emulate the event of creating a circle at a specific locaion (in the red panel for example), with a specific radius. From what I understood, the processInteractionEvents() function is called after the user has drawn his segmentation, but I wanted to do it in…

You can certainly call processInteractionEvents() to simulate user interaction, but it is a very low-level API, which may not be appropriate for a module to call. What would you like to achieve? Simulate drilling?

I did a threshold segmentation on my data, and ended up with two cylinders. One is hollow and is enclosing the other, but they still have small points of contact. The best way to separate them is to use the scissors from the axial view and since I have the diameter of the internal cylinder and it’s …

For this, it would be more appropriate to create a cylinder using vtkCylinderSource , import into the segmentation node, and use Logical operators effect to subtract it from the segment of interest. See first steps of this example to see how to create a segment using a VTK source and import it into a…

Thanks again Andras. I did what you told. So now I have: a threshold segment, that selects two cylinders from my data (a hollow one enclosing a smaller one, separated by a little gap); and the newly created cylinder segment from the vtkCylinderSource, that is located in between the two thresho…

Examples for using segmentations and segment editor from Python scripts: https://www.slicer.org/wiki/Documentation/Nightly/ScriptRepository#Segmentations . You’ll activate the Logical operators effect, set its parameters, and call its Apply method.

I noticed that the cylinder I createad using CreateClosedSurfaceRepresentation following your hint is showing up in the 3D view, but it is not applied as a segmentation. How can I use it to segment everything inside? I tried tu use as a mask also, but no success. The last step in the code was: …

If you create a model node and you want to use it as a segment then then you need to import it into the segmentation . If you create a vtkPolyData using a VTK source then you can add it as a segment as shown in this example: https://gist.github.com/lassoan/2d5a5b73645f65a5eb6f8d5f97abf31b#file-segme…

I did exactly that, but it does’t segment nothing, it just shows the cylinder in the 3D view (because I also called segmentationNode.CreateClosedSurfaceRepresentation()), with no segmentation in the slice panels. Here is my code: # Cylinder for separation of the core from its casing segmen…

Ok. Now it is working. I was calling Update() after adding it. The correct way is: segmentationCylinder.Update() segmentationNode.AddSegmentFromClosedSurfaceRepresentation(segmentationCylinder.GetOutput(), "Core", [0.0, 1.0, 0.0]) Thank you Andras.

Scissors segment editor effects from a script

Development

Topic		Replies	Views
Can't set Scissors parameter Support	5	452	October 5, 2020
Scissors in console vs module Development segmentation	6	379	August 2, 2023
Using Segment Editor effects programmatically Development segmentation , python	6	2936	August 31, 2020
Automating segmentation on volumes Support	19	4405	December 30, 2019
Interacting with Segment Editor Widget through Python Development segmentation	9	3075	August 25, 2017

Scissors segment editor effects from a script

Related topics