[Insight-users] Substract two Deformation fields(vectors) in itk

[Popa Teo]

Hi,
   
  I have a ground truth deformation field.
  I deform an image based on this deformation field.
  Then I'm using demons registration to recover deformation field.
   
  My question :Is in itk a filter that performs vector fields substraction,the computation of the normal of this and then calculation of mean,std,max,min so I can quantify what is the difference between two fields?
   
  Teo

			
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