Re: [Freesurfer] mri_vol2surf masking

2012-06-01 Thread Douglas N Greve
That is not possible. If you mask out everything you don't want, you can run it with --projfrac-max to get the maximum along the normal. Since stuff out of the ribbon is 0, it will give you stuff in the ribbon. This is a little messy though because it won't necessarily give you the point closes

Re: [Freesurfer] mri_vol2surf masking

2012-06-01 Thread Kathryn I. Alpert
Hi Doug, I was wondering if it was possible to have the intensity at the nearest non-zero voxel projected onto the vertex. Perhaps if we use --projfrac 0.5, mri_vol2surf will select mostly GM voxels, which is our goal. Thanks, Kate On 06/01/2012 12:47 PM, Douglas N Greve wrote: >What do you me

Re: [Freesurfer] mri_vol2surf masking

2012-06-01 Thread Douglas N Greve
What do you mean ignore? If you mask them out of the volume so that they are 0 (or -999), then they will be 0 or -999 in the output. doug On 06/01/2012 12:25 PM, Derin J Cobia wrote: > Bump. > > I'm interested in the answer to this question as well. Doug/Bruce, do > you know? > > -Derin > > > On

Re: [Freesurfer] mri_vol2surf masking

2012-06-01 Thread Derin J Cobia
Bump. I'm interested in the answer to this question as well. Doug/Bruce, do you know? -Derin On May 29, 2012, at 8:43 PM, Kathryn I. Alpert wrote: Dear Freesufer experts, I am wondering if it is possible to tell mri_vol2surf to ignore certain voxels in the src volume, for instance, by settin