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Using VTK I managed to slice a volume and get contours of three coronary blood vessels with vtkFeatureEdges.

Is there a VTK way of selecting one of these? What I'm after is a polyData with slice of one vessel only (somewhat similar to scipy label ). I could do this manually by recreating points connectivity from cells but maybe there is a ready-to-use filter that I don't know about?

I'm using Python bindings but I think C++ answer would be helpful too.

This is a ParaView answer as you tagged the question as ParaView. But all these filter and selection mechanism are available in VTK as well.

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