并非每个id的点云都能包含所有的类型的标签,训练时配置项默认设定的label数量为5,一旦出现不一致的情况,就会警示⚠️ f"self.cfg['num_classes'] {self.cfg['num_classes']} is different" \ AssertionError: self.cfg['num_classes'] 5 is differentfrom len(pc_labels) 3