code: def load_image(self):
          
          try:
              image = initializers.load_tiff(self.filename)
              image = initializers.normalize(
                  image, invert=self.invert, scale=self.exposure,
                  dtype=self.float_precision
              )
          except IOError as e:
              log.error("Could not find image '%s'" % self.filename)
              raise e
  
          return image
docs: Read the file and perform any transforms to get a loaded image