def get_image(self, raw, processed=None):
     if self.raw is None:
         self.processed.setPixmap(as_pixmap(transform.raw_to_map(raw, self.purpose)))
     self.raw = raw
 def on_change(self, variable, label, value):
     self.purpose[variable] = value
     label.setText(str(value))
     self.purpose['imagearray'] = transform.raw_to_map(self.raw, self.purpose)
     self.purpose['image'] = as_pixmap(self.purpose['imagearray'])
     self.processed.setPixmap(self.purpose['image'])