-----Original Message-----
From: Fornito, Alexander
Sent: Tue 5/17/2005 12:51 PM
To: Bruce Fischl
Cc:
Subject: RE: [Freesurfer] Appropriate post-editing processing
For lh.white and lh.pial it is:
euler # = v-e+f = 2g-2: 0 - 0 + 0 = 0 --> 1 holes
F =2V-4: 0 != 0-4 (-4)
2E=3F: 0 = 0 (0)
total defect index = 2
As far as I'm aware my version of Freesurfer is up to date (we
downloaded within the past month).
You've confused me abit - I thought the point of manual editing was to
get a topologically correct surface?
Thanks for your help,
Alex
-----Original Message-----
From: Bruce Fischl [mailto:[EMAIL PROTECTED]
Sent: Tue 5/17/2005 11:58 AM
To: Fornito, Alexander
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] Appropriate post-editing processing
what is the euler number? It should be 2 in all cases - you shouldn't
have to edit to get a topologically correct surface. In some cases it
was 1
or 0, but Florent fixed those problems a while ago, so if you have an
up-to-date version of mris_fix_topology it should be 2.
cheers,
Bruce
On Tue, 17 May 2005,
Fornito, Alexander wrote:
> Hi all,
> I've created the final surface on one of my images and noticed that
mris_euler_number has detected defects. I've gone back to edit what i think is
the problem and was wandering if I need to go through the whol process again
(create surface -> Fix topology correction -> Create final surface), or if I
can just run create final surface again.
> Thanks,
> Alex
>
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