A set of classes (vtkPointSetOutlierRemoval, vtkPointSetNormalEstimation, vtkPointSetNormalOrientation, vtkPointSetCurvatureEstimation, vtkEuclideanMinimumSpanningTree, and vtkRiemannianGraphFilter) to enable several basic operations on point sets. These classes are implemented as VTK filters.
You must set Module_vtkInfovisBoost=ON and Module_vtkInfovisBoostGraphAlgorithms=ON in VTK 6's CMake configuration before building VTK. (Of course, this required Boost to be available on your system).