[Insight-users] registration consistency

[qing xu]

Hi,

Does the same registration code with the same input always give the same 
output?

I am doing a 3D registration for a dataset consisting of 50 volumes. I put 
the registration code in a loop so that the registration can be done one by 
one for each volume. However, the reults are much different from what I got 
by processing one volume once a time. The only reason I can think of is that 
running reigstration for too long would consume too much memory, so the 
registration performance is affected. Is that possible?  Does anybody have 
the same experience? Thanks in advance.


(my metric is mattes mutual information and transform is 
VersorRigid3DTransform)


Qing

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