Thank you Rudolph,
what I would like to have as an end product is a list of overlay values at each vertex of the decimated surface (i.e. I don't want to synthesize anything into ROIs).
The overlays are all freesurfer-specific (curvature, thickness, LGI, etc). I cannot recompute these on the new (decimated) surface, as they will be significantly different and less accurate (they are specific to the geometry of the original surface). Rather, I was looking to downsample highres overlays after smoothing.
So i am not sure your suggestion would work - please let me know if I misunderstood something.
Thanks again for your reprly,
Nicola
On 01/24/2013 04:01 PM, Rudolph Pienaar wrote:
If you specifically want to project overlays onto 'mris_decimate'd surfaces, you won't be able to do that. You could, however, generate new overlays using the decimated surface, if that's helpful, using 'mris_curvature_stats' and feeding it the newly downsampled/demicated surface as input.
FWIW.
Best -=R
On 1/23/13 18:07 , Nicola Toschi wrote:
Hello list,
is there a quick way to decimate an overlay /while respecting surface geomery)? I am looking to downsample by about a factor 100.
Alternatively, I know I can use mris_decimate to downsample a surface, but I would have to project my highres overlays onto the downsampled surface (which may not be straightforward).
Thanks a lot in advance,
Nicola
PS apologies for the repost - my subject line was incorrect the first time around.
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