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Semantic understanding of the surrounding environment is essential for automated vehicles. The recent publication of the SemanticKITTI dataset stimulates the research on semantic segmentation of LiDAR point clouds in urban scenarios. While…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Juncong Fei , Kunyu Peng , Philipp Heidenreich , Frank Bieder , Christoph Stiller

The generation of realistic LiDAR point clouds plays a crucial role in the development and evaluation of autonomous driving systems. Although recent methods for 3D LiDAR point cloud generation have shown significant improvements, they still…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Kaiwen Cai , Xinze Liu , Xia Zhou , Hengtong Hu , Jie Xiang , Luyao Zhang , Xueyang Zhang , Kun Zhan , Yifei Zhan , Xianpeng Lang

LiDAR-based 3D object detection presents significant challenges due to the inherent sparsity of LiDAR points. A common solution involves long-term temporal LiDAR data to densify the inputs. However, efficiently leveraging spatial-temporal…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Chaoqun Wang , Xiaobin Hong , Wenzhong Li , Ruimao Zhang

Many point-based semantic segmentation methods have been designed for indoor scenarios, but they struggle if they are applied to point clouds that are captured by a LiDAR sensor in an outdoor environment. In order to make these methods more…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Shijie Li , Yun Liu , Juergen Gall

LiDAR has become a standard sensor for autonomous driving applications as they provide highly precise 3D point clouds. LiDAR is also robust for low-light scenarios at night-time or due to shadows where the performance of cameras is…

Computer Vision and Pattern Recognition · Computer Science 2019-07-18 Khaled El Madawy , Hazem Rashed , Ahmad El Sallab , Omar Nasr , Hanan Kamel , Senthil Yogamani

LiDAR is used in autonomous driving to provide 3D spatial information and enable accurate perception in off-road environments, aiding in obstacle detection, mapping, and path planning. Learning-based LiDAR semantic segmentation utilizes…

Computer Vision and Pattern Recognition · Computer Science 2024-09-02 Kasi Viswanath , Peng Jiang , Sujit PB , Srikanth Saripalli

In this paper, we address semantic segmentation of road-objects from 3D LiDAR point clouds. In particular, we wish to detect and categorize instances of interest, such as cars, pedestrians and cyclists. We formulate this problem as a point-…

Computer Vision and Pattern Recognition · Computer Science 2017-10-23 Bichen Wu , Alvin Wan , Xiangyu Yue , Kurt Keutzer

Critical research about camera-and-LiDAR-based semantic object segmentation for autonomous driving significantly benefited from the recent development of deep learning. Specifically, the vision transformer is the novel ground-breaker that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Junyi Gu , Mauro Bellone , Tomáš Pivoňka , Raivo Sell

As camera and LiDAR sensors capture complementary information used in autonomous driving, great efforts have been made to develop semantic segmentation algorithms through multi-modality data fusion. However, fusion-based approaches require…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Xu Yan , Jiantao Gao , Chaoda Zheng , Chao Zheng , Ruimao Zhang , Shenghui Cui , Zhen Li

Convolutional neural networks (CNNs) have become increasingly popular for solving a variety of computer vision tasks, ranging from image classification to image segmentation. Recently, autonomous vehicles have created a demand for depth…

Computer Vision and Pattern Recognition · Computer Science 2018-11-28 Paden Tomasello , Sammy Sidhu , Anting Shen , Matthew W. Moskewicz , Nobie Redmon , Gayatri Joshi , Romi Phadte , Paras Jain , Forrest Iandola

Although LiDAR semantic segmentation advances rapidly, state-of-the-art methods often incorporate specifically designed inductive bias derived from benchmarks originating from mechanical spinning LiDAR. This can limit model generalizability…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Yanbo Wang , Wentao Zhao , Chuan Cao , Tianchen Deng , Jingchuan Wang , Weidong Chen

We introduce SLCF-Net, a novel approach for the Semantic Scene Completion (SSC) task that sequentially fuses LiDAR and camera data. It jointly estimates missing geometry and semantics in a scene from sequences of RGB images and sparse LiDAR…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Helin Cao , Sven Behnke

Semantic map construction under bird's-eye view (BEV) plays an essential role in autonomous driving. In contrast to camera image, LiDAR provides the accurate 3D observations to project the captured 3D features onto BEV space inherently.…

Computer Vision and Pattern Recognition · Computer Science 2023-06-06 Song Wang , Wentong Li , Wenyu Liu , Xiaolu Liu , Jianke Zhu

3D object detection task from lidar or camera sensors is essential for autonomous driving. Pioneer attempts at multi-modality fusion complement the sparse lidar point clouds with rich semantic texture information from images at the cost of…

Computer Vision and Pattern Recognition · Computer Science 2022-07-13 Bo Ju , Zhikang Zou , Xiaoqing Ye , Minyue Jiang , Xiao Tan , Errui Ding , Jingdong Wang

We study an unsupervised domain adaptation problem for the semantic labeling of 3D point clouds, with a particular focus on domain discrepancies induced by different LiDAR sensors. Based on the observation that sparse 3D point clouds are…

Computer Vision and Pattern Recognition · Computer Science 2021-04-01 Li Yi , Boqing Gong , Thomas Funkhouser

We tackle the problem of producing realistic simulations of LiDAR point clouds, the sensor of preference for most self-driving vehicles. We argue that, by leveraging real data, we can simulate the complex world more realistically compared…

Computer Vision and Pattern Recognition · Computer Science 2020-06-17 Sivabalan Manivasagam , Shenlong Wang , Kelvin Wong , Wenyuan Zeng , Mikita Sazanovich , Shuhan Tan , Bin Yang , Wei-Chiu Ma , Raquel Urtasun

Data scarcity is a bottleneck to machine learning-based perception modules, usually tackled by augmenting real data with synthetic data from simulators. Realistic models of the vehicle perception sensors are hard to formulate in closed…

Image and Video Processing · Electrical Eng. & Systems 2019-12-03 Ahmad El Sallab , Ibrahim Sobh , Mohamed Zahran , Mohamed Shawky

LiDAR data is becoming increasingly essential with the rise of autonomous vehicles. Its ability to provide 360deg horizontal field of view of point cloud, equips self-driving vehicles with enhanced situational awareness capabilities. While…

Computer Vision and Pattern Recognition · Computer Science 2020-09-25 Mohammed Hossny , Khaled Saleh , Mohammed Attia , Ahmed Abobakr , Julie Iskander

LiDAR sensors are widely used in autonomous driving due to the reliable 3D spatial information. However, the data of LiDAR is sparse and the frequency of LiDAR is lower than that of cameras. To generate denser point clouds spatially and…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Xudong Huang , Chunyu Lin , Haojie Liu , Lang Nie , Yao Zhao

LiDAR loop closure detection (LCD) is crucial for consistent Simultaneous Localization and Mapping (SLAM) but faces challenges in robustness and accuracy. Existing methods, including semantic graph approaches, often suffer from coarse…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Xiong Li , Shulei Liu , Xingning Chen , Yisong Wu , Dong Zhu