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We introduce LiDAR-UDA, a novel two-stage self-training-based Unsupervised Domain Adaptation (UDA) method for LiDAR segmentation. Existing self-training methods use a model trained on labeled source data to generate pseudo labels for target…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Amirreza Shaban , JoonHo Lee , Sanghun Jung , Xiangyun Meng , Byron Boots

LiDAR Semantic Segmentation is a fundamental task in autonomous driving perception consisting of associating each LiDAR point to a semantic label. Fully-supervised models have widely tackled this task, but they require labels for each scan,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-06 Xavier Timoneda , Markus Herb , Fabian Duerr , Daniel Goehring , Fisher Yu

Cloud segmentation plays a crucial role in image analysis for climate modeling. Manually labeling the training data for cloud segmentation is time-consuming and error-prone. We explore to train segmentation networks with synthetic data due…

Computer Vision and Pattern Recognition · Computer Science 2020-11-18 Qing Lyu , Minghao Chen , Xiang Chen

Deep-learning-based autonomous driving (AD) perception introduces a promising picture for safe and environment-friendly transportation. However, the over-reliance on real labeled data in LiDAR perception limits the scale of on-road…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Runjian Chen , Wenqi Shao , Bo Zhang , Shaoshuai Shi , Li Jiang , Ping Luo

Semantic segmentation is an important task for scene understanding in self-driving cars and robotics, which aims to assign dense labels for all pixels in the image. Existing work typically improves semantic segmentation performance by…

Computer Vision and Pattern Recognition · Computer Science 2021-11-03 Li Wang , Dong Li , Han Liu , Jinzhang Peng , Lu Tian , Yi Shan

When using LiDAR semantic segmentation models for safety-critical applications such as autonomous driving, it is essential to understand and improve their robustness with respect to a large range of LiDAR corruptions. In this paper, we aim…

Computer Vision and Pattern Recognition · Computer Science 2024-01-09 Xu Yan , Chaoda Zheng , Ying Xue , Zhen Li , Shuguang Cui , Dengxin Dai

This paper presents a simulation workflow for generating synthetic LiDAR datasets to support autonomous vehicle perception, robotics research, and sensor security analysis. Leveraging the CoppeliaSim simulation environment and its Python…

Robotics · Computer Science 2025-06-24 Abhishek Phadke , Shakib Mahmud Dipto , Pratip Rana

3D scene understanding is a critical yet challenging task in autonomous driving due to the irregularity and sparsity of LiDAR data, as well as the computational demands of processing large-scale point clouds. Recent methods leverage…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Bin Yang , Alexandru Paul Condurache

The Segment Anything Model (SAM) is a promptable segmentation model recently introduced by Meta AI that has demonstrated its prowess across various fields beyond just image segmentation. SAM can accurately segment images across diverse…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Junzhang Chen , Xiangzhi Bai

Semantic segmentation of 3D LiDAR point clouds, essential for autonomous driving and infrastructure management, is best achieved by supervised learning, which demands extensive annotated datasets and faces the problem of domain shifts. We…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Andrew Caunes , Thierry Chateau , Vincent Frémont

In this paper, we introduces a new type of line-shaped image representation, named semantic line segment (Sem-LS) and focus on solving its detection problem. Sem-LS contains high-level semantics and is a compact scene representation where…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Yi Sun , Xushen Han , Kai Sun , Boren Li , Yongjiang Chen , Mingyang Li

Temporal semantic scene understanding is critical for self-driving cars or robots operating in dynamic environments. In this paper, we propose 4D panoptic LiDAR segmentation to assign a semantic class and a temporally-consistent instance ID…

Computer Vision and Pattern Recognition · Computer Science 2021-04-08 Mehmet Aygün , Aljoša Ošep , Mark Weber , Maxim Maximov , Cyrill Stachniss , Jens Behley , Laura Leal-Taixé

Annotating large-scale LiDAR point clouds for 3D semantic segmentation is costly and time-consuming, which motivates the use of semi-supervised learning (SemiSL). Standard LiDAR SemiSL methods typically adopt a two-step training paradigm,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Bin Yang , Alexandru Paul Condurache

Autonomous vehicles need to have a semantic understanding of the three-dimensional world around them in order to reason about their environment. State of the art methods use deep neural networks to predict semantic classes for each point in…

Computer Vision and Pattern Recognition · Computer Science 2021-09-27 Larissa T. Triess , David Peter , Christoph B. Rist , J. Marius Zöllner

3D semantic segmentation is a fundamental task for robotic and autonomous driving applications. Recent works have been focused on using deep learning techniques, whereas developing fine-annotated 3D LiDAR datasets is extremely labor…

Computer Vision and Pattern Recognition · Computer Science 2020-12-01 Biao Gao , Yancheng Pan , Chengkun Li , Sibo Geng , Huijing Zhao

Despite all the challenges and limitations, vision-based vehicle speed detection is gaining research interest due to its great potential benefits such as cost reduction, and enhanced additional functions. As stated in a recent survey [1],…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Antonio Hernández Martínez , Javier Lorenzo Díaz , Iván García Daza , David Fernández Llorca

Road segmentation is a critical task for autonomous driving systems, requiring accurate and robust methods to classify road surfaces from various environmental data. Our work introduces an innovative approach that integrates LiDAR point…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Tao Ni , Xin Zhan , Tao Luo , Wenbin Liu , Zhan Shi , JunBo Chen

Autonomous driving relies on a huge volume of real-world data to be labeled to high precision. Alternative solutions seek to exploit driving simulators that can generate large amounts of labeled data with a plethora of content variations.…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 David Acuna , Jonah Philion , Sanja Fidler

Existing adversarial example research focuses on digitally inserted perturbations on top of existing natural image datasets. This construction of adversarial examples is not realistic because it may be difficult, or even impossible, for an…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Xiruo Liu , Shibani Singh , Cory Cornelius , Colin Busho , Mike Tan , Anindya Paul , Jason Martin

We address the problem of unsupervised semantic segmentation of outdoor LiDAR point clouds in diverse traffic scenarios. The key idea is to leverage the spatiotemporal nature of a dynamic point cloud sequence and introduce drastically…

Computer Vision and Pattern Recognition · Computer Science 2023-08-25 Xiao Li , Pan He , Aotian Wu , Sanjay Ranka , Anand Rangarajan