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The autonomous car must recognize the driving environment quickly for safe driving. As the Light Detection And Range (LiDAR) sensor is widely used in the autonomous car, fast semantic segmentation of LiDAR point cloud, which is the…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 Jaehyun Park , Chansoo Kim , Kichun Jo

Mobile robots need to create high-definition 3D maps of the environment for applications such as remote surveillance and infrastructure mapping. Accurate semantic processing of the acquired 3D point cloud is critical for allowing the robot…

Robotics · Computer Science 2019-02-20 Jingdao Chen , Yong K. Cho , Zsolt Kira

Registering urban point clouds is a quite challenging task due to the large-scale, noise and data incompleteness of LiDAR scanning data. In this paper, we propose SARNet, a novel semantic augmented registration network aimed at achieving…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Chao Liu , Jianwei Guo , Dong-Ming Yan , Zhirong Liang , Xiaopeng Zhang , Zhanglin Cheng

LiDAR-based 3D point cloud recognition has been proven beneficial in various applications. However, the sparsity and varying density pose a significant challenge in capturing intricate details of objects, particularly for medium-range and…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Zaipeng Duan , Xuzhong Hu , Pei An , Jie Ma

Early stopping techniques can be utilized to decrease the time cost, however currently the ultimate goal of early stopping techniques is closely related to the accuracy upgrade or the ability of the neural network to generalize better on…

Computer Vision and Pattern Recognition · Computer Science 2022-10-03 Thanasis Zoumpekas , Maria Salamó , Anna Puig

The task of point cloud upsampling aims to acquire dense and uniform point sets from sparse and irregular point sets. Although significant progress has been made with deep learning models, state-of-the-art methods require ground-truth dense…

Computer Vision and Pattern Recognition · Computer Science 2022-06-14 Xinhai Liu , Xinchen Liu , Yu-Shen Liu , Zhizhong Han

Accurate and fast scene understanding is one of the challenging task for autonomous driving, which requires to take full advantage of LiDAR point clouds for semantic segmentation. In this paper, we present a \textbf{concise} and…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Hui-Xian Cheng , Xian-Feng Han , Guo-Qiang Xiao

With the rapid progress of deep convolutional neural networks, in almost all robotic applications, the availability of 3D point clouds improves the accuracy of 3D semantic segmentation methods. Rendering of these irregular, unstructured,…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Mobina Mahdavi , Fahimeh Fooladgar , Shohreh Kasaei

Selection is a fundamental task in exploratory analysis and visualization of 3D point clouds. Prior researches on selection methods were developed mainly based on heuristics such as local point density, thus limiting their applicability in…

Human-Computer Interaction · Computer Science 2024-05-14 Chen Zhu-Tian , Wei Zeng , Zhiguang Yang , Lingyun Yu , Chi-Wing Fu , Huamin Qu

In this work, we address the challenging task of few-shot and zero-shot 3D point cloud semantic segmentation. The success of few-shot semantic segmentation in 2D computer vision is mainly driven by the pre-training on large-scale datasets…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Shuting He , Xudong Jiang , Wei Jiang , Henghui Ding

Among 2D convolutional networks on point clouds, point-based approaches consume point clouds of fixed size directly. By analysis of PointNet, a pioneer in introducing deep learning into point sets, we reveal that current point-based methods…

Computer Vision and Pattern Recognition · Computer Science 2021-08-11 Zhenpeng Chen , Yuan li

Fusion of 2D images and 3D point clouds is important because information from dense images can enhance sparse point clouds. However, fusion is challenging because 2D and 3D data live in different spaces. In this work, we propose MVPNet…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Maximilian Jaritz , Jiayuan Gu , Hao Su

Recently, large-scale pre-trained models such as Segment-Anything Model (SAM) and Contrastive Language-Image Pre-training (CLIP) have demonstrated remarkable success and revolutionized the field of computer vision. These foundation vision…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Shichao Dong , Fayao Liu , Guosheng Lin

Point cloud segmentation is a fundamental visual understanding task in 3D vision. A fully supervised point cloud segmentation network often requires a large amount of data with point-wise annotations, which is expensive to obtain. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Xiaoyu Chen , Chi Zhang , Guosheng Lin , Jing Han

We propose a fully automatic annotation scheme that takes a raw 3D point cloud with a set of fitted CAD models as input and outputs convincing point-wise labels that can be used as cheap training data for point cloud segmentation. Compared…

Computer Vision and Pattern Recognition · Computer Science 2023-07-26 Galadrielle Humblot-Renaux , Simon Buus Jensen , Andreas Møgelmose

In this paper, we propose one novel model for point cloud semantic segmentation, which exploits both the local and global structures within the point cloud based on the contextual point representations. Specifically, we enrich each point…

Computer Vision and Pattern Recognition · Computer Science 2019-11-14 Xu Wang , Jingming He , Lin Ma

Classification and segmentation of 3D point clouds are important tasks in computer vision. Because of the irregular nature of point clouds, most of the existing methods convert point clouds into regular 3D voxel grids before they are used…

Computer Vision and Pattern Recognition · Computer Science 2018-12-05 Wei Zeng , Theo Gevers

The continual improvement of 3D sensors has driven the development of algorithms to perform point cloud analysis. In fact, techniques for point cloud classification and segmentation have in recent years achieved incredible performance…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Junming Zhang , Weijia Chen , Yuping Wang , Ram Vasudevan , Matthew Johnson-Roberson

With the tide of artificial intelligence, we try to apply deep learning to understand 3D data. Point cloud is an important 3D data structure, which can accurately and directly reflect the real world. In this paper, we propose a simple and…

Computer Vision and Pattern Recognition · Computer Science 2019-10-01 Kang Zhiheng , Li Ning

The deficiency of 3D segmentation labels is one of the main obstacles to effective point cloud segmentation, especially for scenes in the wild with varieties of different objects. To alleviate this issue, we propose a novel deep graph…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Haiyan Wang , Xuejian Rong , Liang Yang , Jinglun Feng , Jizhong Xiao , Yingli Tian