Using vtkProbeFilter to sample values of NIFTI volume onto surface
i have a fMRI NIFTI volume whereby each voxel value corresponds to a statistical value. I am using the vtkProbeFilter to show the activation on the
corresponding brain surface. The results looks pretty good but I would like to understand what is really going on when using the vtkProbeFilter.
Assumed that I specify a tolerance value of 10.0, how the filter determines the corresponding scalar value for a certain surface vertex?
Is the filter simply assigning the value of the closest voxel to the vertex? Or is the filter averaging all values within the specified tolerance?
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