code: def _get_result(self, method_name="kaze"):
          
          method_object = self.method_object_dict.get(method_name)
          # 提取结果和特征点:
          try:
              result = method_object.find_best_result()
          except Exception:
              import traceback
              traceback.print_exc()
              return [], [], [], None
  
          return method_object.kp_sch, method_object.kp_src, method_object.good, result
docs: 获取特征点.