[Insight-users] cost map from a contour

[dean.inglis at camris.ca]

Hi,

I have a Dijkstra graph based edge finder
that I want to be able to add a second
element to the cost function image, currently
based on itkGradientMagnitudeRecursiveGaussianImageFilter
followed by itkSigmoidImageFilter.
Use scenario: 
1) user defines a contour on a slice
of a 3D volume
2) user propagates contour to next slice
and the cost function image is augmented
to include distances away from the contour.
  
I'm working with VTK, so the contour is
defined as vtkPolyData.  Is there
a how-to link to convert to itkMesh?
Can I then convert the itkMesh to an
image such that pixels along the contour
are zero and elsewhere defined as a Euclidean
distance map with increasing values away
from the contour?  Suggested ITK classes anyone?

Dean