docstr: Numerical value assigned by this metric to the current image pair
  
  Must return the numeric value of the similarity between the given
  static and moving images
docstr_tok: ["Numerical","value","assigned","by","this","metric","to","the","current","image","pair","Must","return","the","numeric","value","of","the","similarity","between","the","given","static","and","moving","images"]
code: def get_energy(self):
      r"""Numerical value assigned by this metric to the current image pair
  
      Must return the numeric value of the similarity between the given
      static and moving images
      """
  
imports: import abc
  import numpy
  from numpy import gradient
  from scipy import ndimage
  from dipy.align import vector_fields
  from dipy.align import sumsqdiff
  from dipy.align import crosscorr
  from dipy.align import expectmax
  from dipy.align import floating
label_desc: Use image node_id 12 for calling the SimilarityMetric obj's underlying member method code with example usage: obj.get_energy() without return types