[MINC-users] Mapping surface (verstats) data into volume space

[Robert D. Vincent]

Hi Gabriel,

I don't know of a way to do it, but it would be easy to create. I'll look
into it if nobody else comes up with a good suggestion.

    -bert


On Thu, Sep 29, 2016 at 3:27 PM, Gabriel A. Devenyi <
gabriel.devenyi at mcgill.ca> wrote:

> Thanks!
>
> I did indeed try after another reply off-list, sadly, scan_object_to_volume
> seems to ignore colours.
>
> --
> Gabriel A. Devenyi B.Eng. Ph.D.
> Research Computing Associate
> Computational Brain Anatomy Laboratory
> Cerebral Imaging Center
> Douglas Mental Health University Institute
> McGill University
> t: 514.761.6131x4781
> e: gabriel.devenyi at mcgill.ca
>
> On Thu, Sep 29, 2016 at 3:23 PM, Mishkin Derakhshan <mishkind at gmail.com>
> wrote:
>
> > Have you tried making a colored object and then scanning it to volume?
> >
> > Most .obj files default to having just one color per object, and for good
> > reason, this lets you overlay different vertstats data and the like on
> the
> > same object. But you can also create a .obj file where the color is
> stored
> > per vertex. The program to do this is colour_object and should come with
> > the default minc installation.
> >
> > With some luck, scan_object_to_volume will not ignore the colored data.
> > worth a shot anyway.
> >
> > Here is some reference material for .obj files:
> > http://www.bic.mni.mcgill.ca/Services/HowToWorkWithObjectFiles
> >
> > In particular you can see how things are colored here:
> > http://www.bic.mni.mcgill.ca/users/david/FAQ/polygons_format.txt
> >
> >
> > On Thu, Sep 29, 2016 at 7:45 AM, Gabriel A. Devenyi <
> > gabriel.devenyi at mcgill.ca> wrote:
> >
> > > Hi all,
> > >
> > > I’m wondering if anyone knows of a method to map verstats data (data
> on a
> > > MNI object) into volume space.
> > >
> > > I know I can convert an object into a volume representation with
> > > scan_object_to_volume. I’d like to then assign values to those voxels
> > from
> > > a verstats file.
> > >
> > > Thanks!
> > >
> > > —
> > > Gabriel A. Devenyi B.Eng. Ph.D.
> > > Research Computing Associate
> > > Computational Brain Anatomy Laboratory
> > > Cerebral Imaging Center
> > > Douglas Mental Health University Institute
> > > McGill University
> > > t: 514.761.6131x4781
> > > e: gabriel.devenyi at mcgill.ca
> > > ​
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> >
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