Average Mesh and mesh scalar operations

Support
1

Are there any vtk filters that support the following operations, and if there is not, would anyone be opposed to the addition of said filters into VTK?

Given a set of meshes in point correspondence:

  • Compute the average mesh (each point is the average of the corresponding points in the input meshes)
  • Compute the mean of the input meshes’ scalar values at each point
  • Compute the variance of the input meshes’ scalar values at each point
  • Compute the standard deviation of the input meshes’ scalar values at each point
2

Is all this over time ? The vtkAdaptiveTemporalInterpolator is close but not the same.

3

Not necessarily over time. From looking at the vtkAdaptiveTemporalInterpolator it is interpolating (per the name :slight_smile: ). I am more looking to enable statistical analysis across different meshes for the SlicerSALT project.

4

I would expect that VTK statistics classes (e.g., vtkDescriptiveStatistics) can compute these values.

5

Do you know of a good/built-in way to convert a vtkPolyData with scalars into a vtkTable?

6

There are conversion filters (...ToTable classes), but you can also add data arrays manually to a table using AddColumn() method.