[ITK] [ITK-users] How to use rotation matrix and translation to perform Rigid 3D transform?

[Andras Lasso]

FYI, you can import DICOM SRO objects and volumes into 3D Slicer and you can save the transform as an ITK transform file. You need to install the nightly version of 3D Slicer and the SlicerRT extension.

Andras

-----Original Message-----
From: Community [mailto:community-bounces at itk.org] On Behalf Of Siavash Khallaghi
Sent: Friday, September 11, 2015 1:47 PM
To: insight-users at itk.org
Subject: Re: [ITK] [ITK-users] How to use rotation matrix and translation to perform Rigid 3D transform?

paniwani wrote
> I have been able to use a 3rd party radiotherapy visualization tool to 
> verify that the registration works properly. So I don't think the 
> images are registered to a particular tracker. That should not be a problem.

This is because the 3rd party tool has knowledge of the reference or that the transform is already a PET-to-CT transform. I am just telling you this to help you avoid problems in the future.


paniwani wrote
> I don't have Euler angles; I only have a rotation matrix M as above.

You can use the SetMatrix method of itkEuler3DTransform.


paniwani wrote
> Can I just use the Rigid3DTransform (as I seem to already have all the 
> input parameters for it and won't require any conversions)?

I am not sure, but give it a try, and if it works, post the results here.

HTH,

Siavash



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