Improving LiDAR Semantic Segmentation on Minority Classes and Generalization Capability for Autonomous Driving

Chiao Hua Tseng, Yu Ting Lin, Wen Chieh Lin, Chieh Chih Wang

研究成果: Conference contribution同行評審

摘要

LiDARs have emerged as an important sensor in autonomous driving systems because they offer more accurate geometric measurements than cameras and radars. Therefore, LiDARs have been commonly combined with cameras or radars to tackle many perception problems in autonomous driving, such as object detection, semantic segmentation, or navigation. For semantic segmentation of LiDAR data, due to the class imbalance issue of large-scale scene, there is a performance gap between majority classes and minority classes of large-scale dataset. The minority classes usually include the crucial classes to the autonomous driving, such as 'person', 'motorcyclist', 'traffic-sign'. To improve the performance of minority classes, we adopt U-Net++ as the architecture, KPConv as convolution operator, and use both dice loss and cross entropy as loss functions. We get 5.1% mIoU improvement on SemanticKITTI of all classes and 9.5% mIoU improvement of minority classes. Moreover, due to the different resolution of LiDAR sensors, we show the generalization capability of our model by training it on 64-beam dataset and testing on 32-beam and 128-beam dataset. We get 3.3% mIoU improvement on 128-beam dataset and 1.9% mIoU improvement on 32-beam dataset.

原文English
主出版物標題Proceedings - 2022 International Conference on Technologies and Applications of Artificial Intelligence, TAAI 2022
發行者Institute of Electrical and Electronics Engineers Inc.
頁面131-136
頁數6
ISBN(電子)9798350399509
DOIs
出版狀態Published - 2022
事件27th International Conference on Technologies and Applications of Artificial Intelligence, TAAI 2022 - Tainan, Taiwan
持續時間: 1 12月 20223 12月 2022

出版系列

名字Proceedings - 2022 International Conference on Technologies and Applications of Artificial Intelligence, TAAI 2022

Conference

Conference27th International Conference on Technologies and Applications of Artificial Intelligence, TAAI 2022
國家/地區Taiwan
城市Tainan
期間1/12/223/12/22

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