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Multi-modal unsupervised domain adaptation (MM-UDA) for 3D semantic segmentation is a practical solution to embed semantic understanding in autonomous systems without expensive point-wise annotations. While previous MM-UDA methods can…

Computer Vision and Pattern Recognition · Computer Science 2023-09-22 Haozhi Cao , Yuecong Xu , Jianfei Yang , Pengyu Yin , Shenghai Yuan , Lihua Xie

As point cloud data increases in prevalence in a variety of applications, the ability to detect out-of-distribution (OOD) point cloud objects becomes critical for ensuring model safety and reliability. However, this problem remains…

Computer Vision and Pattern Recognition · Computer Science 2025-06-30 Adam Goodge , Xun Xu , Bryan Hooi , Wee Siong Ng , Jingyi Liao , Yongyi Su , Xulei Yang

Learning models on one labeled dataset that generalize well on another domain is a difficult task, as several shifts might happen between the data domains. This is notably the case for lidar data, for which models can exhibit large…

Computer Vision and Pattern Recognition · Computer Science 2024-06-27 Björn Michele , Alexandre Boulch , Gilles Puy , Tuan-Hung Vu , Renaud Marlet , Nicolas Courty

Deep perception models have to reliably cope with an open-world setting of domain shifts induced by different geographic regions, sensor properties, mounting positions, and several other reasons. Since covering all domains with annotated…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Awet Haileslassie Gebrehiwot , David Hurych , Karel Zimmermann , Patrick Pérez , Tomáš Svoboda

We consider the problem of source-free unsupervised category-level pose estimation from only RGB images to a target domain without any access to source domain data or 3D annotations during adaptation. Collecting and annotating real-world 3D…

Computer Vision and Pattern Recognition · Computer Science 2024-01-22 Prakhar Kaushik , Aayush Mishra , Adam Kortylewski , Alan Yuille

Recently, Unsupervised Domain Adaptation (UDA) has attracted increasing attention to address the domain shift problem in the semantic segmentation task. Although previous UDA methods have achieved promising performance, they still suffer…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Junfeng Wu , Zhenjie Tang , Congan Xu , Enhai Liu , Long Gao , Wenjun Yan

LiDAR object detection algorithms based on neural networks for autonomous driving require large amounts of data for training, validation, and testing. As real-world data collection and labeling are time-consuming and expensive,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-06 Sebastian Huch , Luca Scalerandi , Esteban Rivera , Markus Lienkamp

LiDAR-based 3D object detection and semantic segmentation are critical tasks in 3D scene understanding. Traditional detection and segmentation methods supervise their models through bounding box labels and semantic mask labels. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Maoji Zheng , Ziyu Xu , Qiming Xia , Hai Wu , Chenglu Wen , Cheng Wang

Understanding point clouds captured from the real-world is challenging due to shifts in data distribution caused by varying object scales, sensor angles, and self-occlusion. Prior works have addressed this issue by combining recent learning…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Joonhyung Park , Hyunjin Seo , Eunho Yang

Spacecraft Pose Estimation (SPE) is a fundamental capability for autonomous space operations such as rendezvous, docking, and in-orbit servicing. Hybrid pipelines that combine object detection, keypoint regression, and Perspective-n-Point…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Inder Pal Singh , Nidhal Eddine Chenni , Abd El Rahman Shabayek , Arunkumar Rathinam , Djamila Aouada

Unsupervised domain adaptation (UDA) aims to transfer a model learned using labeled data from the source domain to unlabeled data in the target domain. To address the large domain gap issue between the source and target domains, we propose…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Tzuhsuan Huang , Chen-Che Huang , Chung-Hao Ku , Jun-Cheng Chen

Unsupervised domain adaptation (UDA) assumes that source and target domain data are freely available and usually trained together to reduce the domain gap. However, considering the data privacy and the inefficiency of data transmission, it…

Computer Vision and Pattern Recognition · Computer Science 2020-12-11 Xianfeng Li , Weijie Chen , Di Xie , Shicai Yang , Peng Yuan , Shiliang Pu , Yueting Zhuang

We introduce Multi-Source 3D (MS3D), a new self-training pipeline for unsupervised domain adaptation in 3D object detection. Despite the remarkable accuracy of 3D detectors, they often overfit to specific domain biases, leading to…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Darren Tsai , Julie Stephany Berrio , Mao Shan , Eduardo Nebot , Stewart Worrall

Typically, object detection methods for autonomous driving that rely on supervised learning make the assumption of a consistent feature distribution between the training and testing data, this such assumption may fail in different weather…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Jinlong Li , Runsheng Xu , Xinyu Liu , Jin Ma , Baolu Li , Qin Zou , Jiaqi Ma , Hongkai Yu

Unsupervised domain adaptation (UDA) becomes more and more popular in tackling real-world problems without ground truth of the target domain. Though tedious annotation work is not required, UDA unavoidably faces two problems: 1) how to…

Computer Vision and Pattern Recognition · Computer Science 2022-01-26 Zhiming Wang , Yantian Luo , Danlan Huang , Ning Ge , Jianhua Lu

Object detection and semantic segmentation with the 3D lidar point cloud data require expensive annotation. We propose a data augmentation method that takes advantage of already annotated data multiple times. We propose an augmentation…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Petr Šebek , Šimon Pokorný , Patrik Vacek , Tomáš Svoboda

In order to robustly deploy object detectors across a wide range of scenarios, they should be adaptable to shifts in the input distribution without the need to constantly annotate new data. This has motivated research in Unsupervised Domain…

Computer Vision and Pattern Recognition · Computer Science 2021-10-05 Farzaneh Rezaeianaran , Rakshith Shetty , Rahaf Aljundi , Daniel Olmeda Reino , Shanshan Zhang , Bernt Schiele

Existing point-cloud based 3D object detectors use convolution-like operators to process information in a local neighbourhood with fixed-weight kernels and aggregate global context hierarchically. However, non-local neural networks and…

Computer Vision and Pattern Recognition · Computer Science 2021-08-23 Prarthana Bhattacharyya , Chengjie Huang , Krzysztof Czarnecki

In the field of large-scale SLAM for autonomous driving and mobile robotics, 3D point cloud based place recognition has aroused significant research interest due to its robustness to changing environments with drastic daytime and weather…

Computer Vision and Pattern Recognition · Computer Science 2021-08-05 Zhijian Qiao , Hanjiang Hu , Weiang Shi , Siyuan Chen , Zhe Liu , Hesheng Wang

The growing deployment of low-cost, distributed sensor networks in environmental and biomedical domains has enabled continuous, large-scale health monitoring. However, these systems often face challenges related to degraded data quality…

Machine Learning · Computer Science 2025-08-07 Keivan Faghih Niresi , Ismail Nejjar , Olga Fink
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