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Hi Sebastien,

Freeview does not support voxel-specific alpha channel. You can only apply a uniform opacity.

Ruopeng

On Sep 8, 2023, at 9:16 AM, Proulx, Jean Sebastien <JSPROULX@mgh.harvard.edu> wrote:

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Dear Freesurfers,
 
Is it possible to input an alpha channel to freeview? Otherwise said, can one obtain a voxel-specific opacity?
 
I would see something like
freeview underlay.mgz overlay.mgz:opacity=opacity.mgz
where the single opacity value is replaced with a file containing the desired voxel-specific opacities.
 
Thanks for your help and
Have a very good day!
Sebastien
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