Hi Ting
STL may not contain the info for ras2vox transform as it is not a medical
imaging format. We've only supported it in the past for 3D printing and
such. You might need to keep track of the ras2vox and restore it when you
convert back (e.g. in matlab)
cheers
Bruce
On Fri, 21 Nov 2014, ting
xu wrote:
Hi there,
In my understanding, mris_convert does not change any information (vertices
coordinates and triangles) during converting, right? However, I observed odd
thing as bellow,
Command I used: mris_convert subjid/surf/lh.white subjid/surf/lh.white.stl
I convert the white surface to .stl format, then load original white surface
and .stl file in freeview, with subjid/mri/brainmask.mgz as volume underlay.
The shape of lh.white.stl mesh looks the same as original one, but the
position of lh.white.stl was displaced. I attached a screenshot (yellow one
is original white surface, red one is .stl format one).
I also used freesurfer_read_surf function to read the coordinates and the
faces in matlab, then compare it to .stl coordinate, they are the same.
I need to use .stl format for my analysis outside freesurfer, then convert
result back to freesurfer format. I am worried whether this would cause any
problems?
PS, if it is fsaverage template surface, no position shift after format
transform.
Many thanks if anyone help with this,
Ting
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