I would like to able to clean some 3D models from surface scanner. Currently, what I do is to import the model as a segmentation node, and then export the resultant segmentation node as a label map, which I use it as the master volume in the segment editor. It seems to work. Would there be any down…

This is a good approach. In recent nightly Slicer versions this process is streamlined: Drag-and-drop STL file to Slicer window and in Add data dialog, choose “Segmentation” in Description column (there is no need to load as model and then import to segmentation but you can directly load as segmen…

Thanks @lassoan . How recent is this? My nightly from 12/11 still shows only model/scalar overlay/volume as options in description column. My data is in ply format, not stl by the way.

We have not enabled direct segmentation import for all surface mesh files. Probably ply you still have to load as model and then import to segmentation.

@lassoan are you planning to enable importing segmentation from non-stl 3D model formats at all?

We can import STL and OBJ. Would there be any other mesh file formats that you would like load directly as segmentation?

I think it would be good to have PLY and VTK. Particularly latter being the default format for 3D models in Slicer.

Hello, I am trying to import a segmentation from one CT examination volume into a new, similar CT examination volume. When I attempt to do so, the segmentation and/or model that I import is located in a different location/ coordinate than the CT volume. I would like to simply move and maybe rotate…

Short answer is you can use Transforms module to create a blank transform, assign your segmentation to it, and the use the position sliders to manually align in 3D space. Registration might be an option too. But, unless these are coming from the same subject, they probably won’t line up very well d…

Yes, probably landmark-based registration would get these aligned the fastest. If you use Fiducial registration wizard module (in SlicerIGT extension) then you can choose warping transform, which can deal with large differences. What is your goal with the registration? Why don’t you segment the CT …

3D model to segmentation

Support

Topic		Replies	Views
Image is not aligned with segmentation Support segmentation	2	1165	June 25, 2020
Wondering if I can create segmentation label from imported STL object? Support segmentation	4	815	August 28, 2019
STL of a 2d surface Support segmentation	6	1086	August 28, 2017
Converting .stl files into segments for editing Support	5	2983	July 26, 2019
Merging two models Support	17	19174	January 25, 2018

3D model to segmentation

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