### Description

* Contributed by: Lars Friedrich

This example generates a sphere, cuts it with a plane and, therefore, generates a circlular contour (vtkPolyData). Subsequently a binary image representation (vtkImageData) is extracted from it. Internally vtkPolyDataToImageStencil and vtkLinearExtrusionFilter are utilized.
Both the circular poly data (circle.vtp) and the resultant image (labelImage.mhd) are saved to disk.

**NOTE**: Similarily to example
[PolyDataToImageData](PolyDataToImageData), I am not really sure
whether or not the image origin needs to be adjusted as the
sphere-image-overlay shows some offset in paraview visualization (at
least I think ...). Maybe someone could verify that. Thanks!
