.. _explanation_deformation_linear_momentum:

Linear models - parameterized by momentum
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Parameters
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Deformation model
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.. figure:: images/diagrams/linear_momentum.png
   :width: 450
   :align: center
   :alt: The four different parameterizations of a linear deformation model.

   Links between the four variables that can be used to describe a linear model:
   the parameter $\theta$, the momentum $p$, the displacement $v$
   and the latent code $z$.