docstr: Computes one step bringing the static image towards the moving.
  
  Computes the backward update field to register the static image towards
  the moving image in a gradient-based optimization algorithm
docstr_tok: ["Computes","one","step","bringing","the","static","image","towards","the","moving",".","Computes","the","backward","update","field","to","register","the","static","image","towards","the","moving","image","in","a","gradient-based","optimization","algorithm"]
code: def compute_backward(self):
      r"""Computes one step bringing the static image towards the moving.
  
      Computes the backward update field to register the static image towards
      the moving image in a gradient-based optimization algorithm
      """
  
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 11 for calling the SimilarityMetric obj's underlying member method code with example usage: obj.compute_backward() without return types