/**
 \defgroup ITKDisplacementField Module ITKDisplacementField 
 This module contains filters for computing and manipulating
deformation fields. In ITK a deformation field is usually represented as an
image of vectors. That is, every pixel contains a vector. In this module you
will find filters for: computing a deformation field from a transform,
computing inverse deformation fields, and computing the Jacobian Determinant of
a deformation field. 
 \par Dependencies:
 \li \ref ITKImageGrid 
 \li \ref ITKImageIntensity 
 \li \ref ITKSmoothing 
 \dot 
 graph "ITKDisplacementField" { 
 "ITKDisplacementField" -- "ITKImageGrid"; 
 "ITKDisplacementField" -- "ITKImageIntensity"; 
 "ITKDisplacementField" -- "ITKSmoothing"; 
 } 
 \enddot 
 */