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In this paper, we propose PointSeg, a real-time end-to-end semantic segmentation method for road-objects based on spherical images. We take the spherical image, which is transformed from the 3D LiDAR point clouds, as input of the…

Computer Vision and Pattern Recognition · Computer Science 2018-09-26 Yuan Wang , Tianyue Shi , Peng Yun , Lei Tai , Ming Liu

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 propose an approach to perform semantic segmentation of 3D point cloud data by importing the geographic information from a 2D GIS layer (OpenStreetMap). The proposed automatic procedure identifies meaningful units such as…

Computer Vision and Pattern Recognition · Computer Science 2021-08-16 Chao-Jung Liu , Vladimir Krylov , Rozenn Dahyot

Point cloud semantic segmentation plays an essential role in autonomous driving, providing vital information about drivable surfaces and nearby objects that can aid higher level tasks such as path planning and collision avoidance. While…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Ozan Unal , Luc Van Gool , Dengxin Dai

Semantic segmentation of 3D point clouds is a challenging problem with numerous real-world applications. While deep learning has revolutionized the field of image semantic segmentation, its impact on point cloud data has been limited so…

Computer Vision and Pattern Recognition · Computer Science 2017-05-10 Felix Järemo Lawin , Martin Danelljan , Patrik Tosteberg , Goutam Bhat , Fahad Shahbaz Khan , Michael Felsberg

Point clouds provide intrinsic geometric information and surface context for scene understanding. Existing methods for point cloud segmentation require a large amount of fully labeled data. Using advanced depth sensors, collection of large…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Jiacheng Wei , Guosheng Lin , Kim-Hui Yap , Tzu-Yi Hung , Lihua Xie

In contrast to the literature where local patterns in 3D point clouds are captured by customized convolutional operators, in this paper we study the problem of how to effectively and efficiently project such point clouds into a 2D image…

Computer Vision and Pattern Recognition · Computer Science 2020-10-09 Yecheng Lyu , Xinming Huang , Ziming Zhang

Point clouds analysis has grasped researchers' eyes in recent years, while 3D semantic segmentation remains a problem. Most deep point clouds models directly conduct learning on 3D point clouds, which will suffer from the severe sparsity…

Computer Vision and Pattern Recognition · Computer Science 2021-09-21 Zhenhong Zou , Yizhe Li

This paper introduces a new definition of multiscale neighborhoods in 3D point clouds. This definition, based on spherical neighborhoods and proportional subsampling, allows the computation of features with a consistent geometrical meaning,…

Computer Vision and Pattern Recognition · Computer Science 2018-08-03 Hugues Thomas , Jean-Emmanuel Deschaud , Beatriz Marcotegui , François Goulette , Yann Le Gall

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

In this paper, we propose a multi-resolution deep-learning architecture to semantically segment dense large-scale pointclouds. Dense pointcloud data require a computationally expensive feature encoding process before semantic segmentation.…

Computer Vision and Pattern Recognition · Computer Science 2021-01-25 Liuyue Xie , Tomotake Furuhata , Kenji Shimada

Three-dimensional (3D) point clouds are important data representations in visualization applications. The rapidly growing utility and popularity of point cloud processing strongly motivate a plethora of research activities on large-scale…

Signal Processing · Electrical Eng. & Systems 2021-11-24 Qinwen Deng , Songyang Zhang , Zhi Ding

3D semantic scene labeling is fundamental to agents operating in the real world. In particular, labeling raw 3D point sets from sensors provides fine-grained semantics. Recent works leverage the capabilities of Neural Networks (NNs), but…

Computer Vision and Pattern Recognition · Computer Science 2017-10-23 Lyne P. Tchapmi , Christopher B. Choy , Iro Armeni , JunYoung Gwak , Silvio Savarese

Semantic segmentation for robotic systems can enable a wide range of applications, from self-driving cars and augmented reality systems to domestic robots. We argue that a spherical representation is a natural one for egocentric…

Robotics · Computer Science 2022-10-26 Lukas Bernreiter , Lionel Ott , Roland Siegwart , Cesar Cadena

3D point cloud segmentation aims to assign semantic labels to individual points in a scene for fine-grained spatial understanding. Existing methods typically adopt data augmentation to alleviate the burden of large-scale annotation.…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Hongbin Lin , Yifan Jiang , Juangui Xu , Jesse Jiaxi Xu , Yi Lu , Zhengyu Hu , Ying-Cong Chen , Hao Wang

This paper presents a novel 3D semantic segmentation method for large-scale point cloud data that does not require annotated 3D training data or paired RGB images. The proposed approach projects 3D point clouds onto 2D images using virtual…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Toshihiko Nishimura , Hirofumi Abe , Kazuhiko Murasaki , Taiga Yoshida , Ryuichi Tanida

We study the problem of unsupervised 3D semantic segmentation on raw point clouds without needing human labels in training. Existing methods usually formulate this problem into learning per-point local features followed by a simple grouping…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Zihui Zhang , Weisheng Dai , Hongtao Wen , Bo Yang

3D Point Cloud Semantic Segmentation (PCSS) is attracting increasing interest, due to its applicability in remote sensing, computer vision and robotics, and due to the new possibilities offered by deep learning techniques. In order to…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Yuxing Xie , Jiaojiao Tian , Xiao Xiang Zhu

LiDAR point cloud analysis is a core task for 3D computer vision, especially for autonomous driving. However, due to the severe sparsity and noise interference in the single sweep LiDAR point cloud, the accurate semantic segmentation is…

Computer Vision and Pattern Recognition · Computer Science 2020-12-08 Xu Yan , Jiantao Gao , Jie Li , Ruimao Zhang , Zhen Li , Rui Huang , Shuguang Cui

Despite significant progress in 3D point cloud segmentation, existing methods primarily address specific tasks and depend on explicit instructions to identify targets, lacking the capability to infer and understand implicit user intentions…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Shuting He , Henghui Ding , Xudong Jiang , Bihan Wen