That's what it is supposed to do, but the starting estimates need to be good.
Best regards,
-John
On Friday 26 September 2008 16:16, Vidya Rajagopalan wrote:
> Hello John,
>
> Doesn't the affine registration option in the segmentation do exactly
> that? Align the input image to the template?
>
> Vidya
>
> On Fri, 2008-09-26 at 15:55 +0100, John Ashburner wrote:
> > Use the CheckReg button to display your original image alongside one of
> > the tissue probability map images in the "tpm" folder of SPM. If they
> > are not approximately aligned (within about 3cm and 15 degrees), then
> > that could be the problem.
> >
> > If not, then search through the 100 or so emails here for possible clues:
> >
> > http://www.jiscmail.ac.uk/cgi-bin/webadmin?S2=SPM&m=32641&f=john%40fil&q=
> >display+and+reorient
> >
> > Best regards,
> > -John
> >
> > On Friday 26 September 2008 15:46, Vidya Rajagopalan wrote:
> > > Hello All,
> > >
> > > I am trying to segment T1 MR images using SPM5. The output of the
> > > segmentation yields images where every voxel has a value of zero. I
> > > have tried changing all the options in the affine regularization option
> > > with no success. I have used the default values for the other options.
> > > What could be causing this error and how can I correct it?
> > >
> > > Thank you.
> > > Vidya Rajagopalan
> > > Virginia Tech
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