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. Author manuscript; available in PMC: 2012 Sep 6.
Published in final edited form as: IEEE Trans Med Imaging. 2011 Aug 22;31(1):117–130. doi: 10.1109/TMI.2011.2165554

Fig. 2.

Fig. 2

Graphical representation of the spatially constrained probabilistic model for neurofilament tracking. x represents the dynamic state, a represents the axon constraint, y represents the compound dynamic state resulting from the combination of a and x, and z represents the observation state. The dynamic state (position, orientation, and velocity) of the moving neurofilament at time t depends on the dynamic state in the prior time interval, t-1, and the constraint imposed on the position and orientation of the neurofilament by the axon at time t.