[Insight-users] Versor

[Gael]

gael <gael.pentang at ...> writes:

> 
> Hello,
> 
> I am doing registration with mattes mutual information and ther
> versorRigid3Dtransform.
> How can I get the exact rotation angle and translation parameter. I don't
> understand how I should interpret the versor, offset, rotation matrix,
> tranlation X,Y,Z. 
> 
> Thanks in advance for your answer
> 
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Hi Luis,

Actually I found the answer to my question when browsing the forum. Here you can
follow this link to understand how to compute the angle from the versor:

http://article.gmane.org/gmane.comp.lib.itk.user/22752/match=versor

But the question that I still have is the following:

1. From the answer in the link, I can get one angle. Where I was expecting to
get an angle in the x, y, and z direction? Does
anybody have an idea on how to interpret it in such a way?

2. I would like to know how to get the exact translation parameters from the
offset and all.

Thanks for answering me. Actually, if my question is not clear, please let me
know so that I can reformulate it.

Thanks. Gael