-----Original Message-----
From: ktainter [mailto:[log in to unmask]]
Sent: Monday, February 07, 2005 4:11 PM
To: [log in to unmask]
Subject: RE: [SPM] Affine transform
The *sn3d.mat contains several matrices, one which converts the input image
To realworld (mm) coordinates, the affine matrix, and one which converts the
Desired output to realworld coordinates... If there is a non=affine
component to the match, then there are a list of point (transformed) as
well.
The important stuff (sic) is in matrices, MF, MG, and Affine. Be sure to
pay
Attention to the location of the origin of the in/out images as defined in
the MF/MG matrices if you plan on fiddling with the Transforms, or you will
get something unexpected (I don't know what).
Kerrie Tainter, PHD
Biomedical Res Foundation,
LSUHSC-S
Shreveport, LA
-----Original Message-----
From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] On
Behalf Of Karsten Specht
Sent: Monday, February 07, 2005 4:04 PM
To: [log in to unmask]
Subject: Re: [SPM] Affine transform
Dear Lukas,
> Could anyone tell me if the affine transform for each subject is somewhere
strored in the SPM.mat
> file for SPM2.
> I would like to do some calculations with it (VBM-data).
it's stored in the ***_sn.mat file, which is created during the
normalization. You can find it in the same folder as the image file, which
you used for the normalization. I don't know, what you are planing to do,
but the Deformation toolbox could probably help, as well.
Good luck,
Karsten
--
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Karsten Specht, PhD
Department of Biological and Medical Psychology
University of Bergen
Jonas Lies vei 91
5009 Bergen
Norway
Tel.: +47-555-86279
Fax: +47-555-89872
[log in to unmask]
http://fmri.uib.no/
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