code: def refresh_method_objects(self):
          
          self.method_object_dict = {}
          for key, method in self.MATCHING_METHODS.items():
              method_object = method(self.im_search, self.im_source, self.threshold, self.rgb)
              self.method_object_dict.update({key: method_object})
docs: 初始化方法对象.