If I understand you correctly, this paper may be a good starting point:
http://www.sciencedirect.com/science/article/pii/S1053811903000193
Characterizing volume and surface deformations in an atlas framework:
theory, applications, and implementation. Roger P. Woods. NeuroImage
Volume 18, Issue 3, March 2003, Pages 769–788
Best regards,
-John
On 22 July 2013 17:55, omid mehdizadehdastjerdi
<[log in to unmask]> wrote:
> Dear SPMers,
> For atlas construction I need to get average of affine transformation
> produced by Normalization algorithms of SPM. I have a problem in taking
> average of affine transformation. Can anyone help me?
> Omid
>
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