How to compute oriented bounding box for a model and display it using annotation ROI?

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In Get size, position, and orientation of each segment, I learned how to compute oriented bounding box for each segment and displays them using annotation ROI.
I want to know how to compute oriented bounding box for a model and display it using annotation ROI .

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or how to convert model to segmentation node with python?

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You can load a surface mesh file as segmentation or import a model into a segmentation node by calling slicer.modules.segmentations.logic().ImportModelToSegmentationNode(modelNode, segmentationNode).

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Thanks,谢谢老师! :slightly_smiling_face: