@InProceedings{10.1007/978-3-031-19839-7_19, author="Cen, Jun and Yun, Peng and Zhang, Shiwei and Cai, Junhao and Luan, Di and Tang, Mingqian and Liu, Ming and Yu Wang, Michael", editor="Avidan, Shai and Brostow, Gabriel and Ciss{\'e}, Moustapha and Farinella, Giovanni Maria and Hassner, Tal", title="Open-world Semantic Segmentation for LIDAR Point Clouds", booktitle="Computer Vision -- ECCV 2022", year="2022", publisher="Springer Nature Switzerland", address="Cham", pages="318--334", abstract="Current methods for LIDARWang, Michael Yu semantic segmentation are not robust enough for real-world applications, e.g., autonomous driving, since it is closed-set and static. The closed-set assumption makes the network only able to output labels of trained classes, even for objects never seen before, while a static network cannot update its knowledge base according to what it has seen. Therefore, in this work, we propose the open-world semantic segmentation task for LIDAR point clouds, which aims to 1) identify both old and novel classes using open-set semantic segmentation, and 2) gradually incorporate novel objects into the existing knowledge base using incremental learning without forgetting old classes. For this purpose, we propose a REdundAncy cLassifier (REAL) framework to provide a general architecture for both the open-set semantic segmentation and incremental learning problems. The experimental results show that REAL can simultaneously achieves state-of-the-art performance in the open-set semantic segmentation task on the SemanticKITTI and nuScenes datasets, and alleviate the catastrophic forgetting problem with a large margin during incremental learning.", isbn="978-3-031-19839-7" }