          """ Normalizes the face for feeding into model
  
          The normalization method is dictated by the command line argument `-nh (--normalization)`
          """
          if self.normalize_method is None:
              return faces
          logger.trace("Normalizing faces")
          meth = getattr(self, "_normalize_{}".format(self.normalize_method.lower()))
          faces = [meth(face) for face in faces]
          logger.trace("Normalized faces")
 
</s> remove         meth = getattr(self, "_normalize_{}".format(self.normalize_method.lower()))
 </s> add         meth = getattr(self, "_normalize_{}".format(self._normalize_method.lower())) </s> remove         logger.trace("Requested color format '%s' for frame '%s'", colorformat, self._filename)
        image = getattr(self, "_image_as_{}".format(colorformat.lower()))()
 </s> add         logger.trace("Requested color format '%s' for frame '%s'", color_format, self._filename)
        image = getattr(self, "_image_as_{}".format(color_format.lower()))() </s> remove         self.normalize_method = normalize_method
 </s> add         self._normalize_method = None
        self.set_normalize_method(normalize_method)
        if self._normalize_method is None:
          """ Normalizes the face for feeding into model
  
          The normalization method is dictated by the command line argument `-nh (--normalization)`
          """
        if self._normalize_method is None:
              return faces
          logger.trace("Normalizing faces")
          meth = getattr(self, "_normalize_{}".format(self.normalize_method.lower()))
          faces = [meth(face) for face in faces]
          logger.trace("Normalized faces")
keep keep keep keep replace keep keep keep keep keep
 Core updates (#982)

* plugins.extract.align
  - Expose normalization method

* lib.gui core updates
  - Minor updates to support future development. 
plugins/extract/align/_base.py