[MINC-users] spatial location of voxels

[Andrew Janke]

On Wed, 21 Apr 2004, Kuan H. Kho wrote:

> I was wondering what to what spatial location the MINC coordinates (both
> voxel and world) refer to. Is that a vertex (which of the 8), the middle of
> an edge, or the center of a voxel?

Centre.

> Furthermore, I was wondering whether there's a command or tool to extract
> the exact voxel (and world) coordinates for certain conditional voxel
> values (i.e. thresholds) in a volume. Of course the exact voxel coordinates
> suffice, for  world coordinate = voxel coordinate*step + start, but if
> there's such a tool existing, it would come in handy.

To a threshold?  not that I know of. otherwise just

  voxeltoworld and worldtovoxel

will be able to help you.

Also remember that the conversion includes the direction cosines.


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