[vtkusers] How to crop a 3D model?

[Wenlong]

Dear all,

I am trying to crop my 3D face model. For example, I have a 3D face model
with 7710 points. But I don't need them all, I only need 5090 of them. So,
how can I crop the oringinal 3D face model and get a smaller one?

Many thanks in advance for your kindly help.

Best wishes
Wenlong

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