old_contents: 
  from binary_descriptor import BinaryDescriptor
  import amitgroup as ag
  import amitgroup.features
  
  # TODO: This is temporarily moved
  #@BinaryDescriptor.register('edges')
  class EdgeDescriptor(BinaryDescriptor):
      """
      Binary descriptor based on edges.
  
      The parameters are similar to :func:`amitgroup.features.bedges`.
      
      Parameters
      ----------
      polarity_sensitive : bool
          If True, the polarity of the edges will matter. If False, then the direction of edges will not matter. 
      k : int
          See :func:`amitgroup.features.bedges`.
      radius : int
          Radius of edge spreading. See :func:`amitgroup.features.bedges`.
      min_contrast : float 
          See :func:`amitgroup.features.bedges`.
      """
      def __init__(self, polarity_sensitive=True, k=5, radius=1, min_contrast=0.1):
          self.settings = {}
          # Change this 
          self.settings['contrast_insensitive'] = polarity_sensitive 
          self.settings['k'] = k 
          self.settings['radius'] = radius 
          self.settings['min_contrast'] = min_contrast 
          self.settings.update(settings)
  
      def extract_features(self, img):
          #return ag.features.bedges_from_image(img, **self.settings)
          return ag.features.bedges(img, **self.settings)
  
      def save_to_dict(self):
          return self.settings
  
      @classmethod
      def load_from_dict(cls, d):
          return cls(d)
  
  
  EdgeDescriptor = BinaryDescriptor.register('edges')(EdgeDescriptor)
  
new_contents: 
  from binary_descriptor import BinaryDescriptor
  import amitgroup as ag
  import amitgroup.features
  
  # TODO: This is temporarily moved
  #@BinaryDescriptor.register('edges')
  class EdgeDescriptor(BinaryDescriptor):
      """
      Binary descriptor based on edges.
  
      The parameters are similar to :func:`amitgroup.features.bedges`.
      
      Parameters
      ----------
      polarity_sensitive : bool
          If True, the polarity of the edges will matter. If False, then the direction of edges will not matter. 
      k : int
          See :func:`amitgroup.features.bedges`.
      radius : int
          Radius of edge spreading. See :func:`amitgroup.features.bedges`.
      min_contrast : float 
          See :func:`amitgroup.features.bedges`.
      """
      def __init__(self, polarity_sensitive=True, k=5, radius=1, min_contrast=0.1):
          self.settings = {}
          # Change this 
          self.settings['contrast_insensitive'] = not polarity_sensitive 
          self.settings['k'] = k 
          self.settings['radius'] = radius 
          self.settings['min_contrast'] = min_contrast 
          self.settings.update(settings)
  
      def extract_features(self, img):
          #return ag.features.bedges_from_image(img, **self.settings)
          return ag.features.bedges(img, **self.settings)
  
      def save_to_dict(self):
          return self.settings
  
      @classmethod
      def load_from_dict(cls, d):
          return cls(d)
  
  
  EdgeDescriptor = BinaryDescriptor.register('edges')(EdgeDescriptor)
  
subject: Fix bug in EdgeDescriptor setting.