Creating uniform rectilinear slice of 3D data

I allready tried vtkImageReslice but it does not work. It only works with ImageDataInput. I need an approach that also works with unstructured grids. Additionally I am working with a vector field and vtkImageReslice only works with scalar input.
I think that vtkProbeFilter will work. But my main problem is that I can’t find an elegant way to obtain a regular grid as input.