> Is there a way to extract the information in the sn.mat file as ascii?
> Perhaps I am being obsessive compulsive, but I would like to see the
> explicit transformations used to normalize the images, specifically the
> non-linear, dct-based transform. I am aware of the options under toolbox
> to set up inverse transforms and use them, but these do not produce the
> actual mathematical transform used, only a display of the warping as an
> image. I would expect there might be some matlab utility that would do
> what I want but I haven't been able to find one. Can anyone help?
Try the Deformations toolbox. You can write the deformation fields as images,
which you can visualise using whatever means you choose. Writing the Jacobian
determinants is often useful, as it shows you how much expansion/contraction
has occured.
Best regards,
-John
--
Dr John Ashburner.
Functional Imaging Lab., 12 Queen Square, London WC1N 3BG, UK.
tel: +44 (0)20 78337491 or +44 (0)20 78373611 x4381
fax: +44 (0)20 78131420 http://www.fil.ion.ucl.ac.uk/~john
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