make registration deterministic? about elastix HOT 5 CLOSED

@zapaishchykova Thank very much for submitting this issue, Anna. The issue is indeed caused by the image sampler using a random number generator (ImageSampler "Random"). Internally it uses the MersenneTwisterRandomVariateGenerator from ITK. Coincidentally I just submitted a proposal to allow resetting the next seed of that random number generator:

• ITK pull request InsightSoftwareConsortium/ITK#4247

As far as I can see now, the proposed new function, ResetNextSeed(), should allow making the registration deterministic! So please "like" (👍) that pull request!

Kind regards, Niels

from elastix.

And then it would be good to make use of it in elastix.
This should also synchronize behavior with the command line executable, as that one is perfectly reproducible.

from elastix.

Yes it seems someone made a binary package in ubuntu of elastix.

You can also get it from
https://github.com/SuperElastix/elastix/releases/tag/5.1.0

from elastix.

perfect, thanks! Just tested the cmd - its indeed deterministic. I will stick to cmd version for now, while waiting for the pull request to be propagated to the Python library.

from elastix.

@N-Dekker awesome, what a great coincidence!

@mstaring do you by chance know the command line alternative for the itk.elastix_registration_method? is it this one https://manpages.ubuntu.com/manpages/trusty/man1/elastix.1.html? Then I can replace Python wrapper with some shell commands via subprocess.

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