def __add_contour():
     self.is_fit = False
     cont = Contour(pil_image=self.canvas_initial_state,
                    name='Contour' + str(len(self.contours) + 1))
     if cont.size() > 0:
         self.contours.append(cont)
         cont.dump(self.project_path)
         self.apply_contours()