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We propose a new approach called LiDAR-Flow to robustly estimate a dense scene flow by fusing a sparse LiDAR with stereo images. We take the advantage of the high accuracy of LiDAR to resolve the lack of information in some regions of…

Computer Vision and Pattern Recognition · Computer Science 2019-12-16 Ramy Battrawy , René Schuster , Oliver Wasenmüller , Qing Rao , Didier Stricker

Scene flow is the task of estimating 3D motion vectors to individual points of a dynamic 3D scene. Motion vectors have shown to be beneficial for downstream tasks such as action classification and collision avoidance. However, data…

Computer Vision and Pattern Recognition · Computer Science 2020-11-17 Victor Zuanazzi

LiDAR representation learning has emerged as a promising approach to reducing reliance on costly and labor-intensive human annotations. While existing methods primarily focus on spatial alignment between LiDAR and camera sensors, they often…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Xiang Xu , Lingdong Kong , Hui Shuai , Wenwei Zhang , Liang Pan , Kai Chen , Ziwei Liu , Qingshan Liu

We propose a data-driven scene flow estimation algorithm exploiting the observation that many 3D scenes can be explained by a collection of agents moving as rigid bodies. At the core of our method lies a deep architecture able to reason at…

Computer Vision and Pattern Recognition · Computer Science 2021-02-18 Zan Gojcic , Or Litany , Andreas Wieser , Leonidas J. Guibas , Tolga Birdal

3D object detection based on roadside cameras is an additional way for autonomous driving to alleviate the challenges of occlusion and short perception range from vehicle cameras. Previous methods for roadside 3D object detection mainly…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Xiahan Chen , Mingjian Chen , Sanli Tang , Yi Niu , Jiang Zhu

In this paper, we present a novel method based on online target-specific metric learning and coherent dynamics estimation for tracklet (track fragment) association by network flow optimization in long-term multi-person tracking. Our…

Computer Vision and Pattern Recognition · Computer Science 2016-04-25 Bing Wang , Gang Wang , Kap Luk Chan , Li Wang

The ability to detect and segment moving objects in a scene is essential for building consistent maps, making future state predictions, avoiding collisions, and planning. In this paper, we address the problem of moving object segmentation…

Scene flow estimation is an extremely important task in computer vision to support the perception of dynamic changes in the scene. For robust scene flow, learning-based approaches have recently achieved impressive results using either…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Rajai Alhimdiat , Ramy Battrawy , René Schuster , Didier Stricker , Wesam Ashour

We propose a new self-supervised approach to image feature learning from motion cue. This new approach leverages recent advances in deep learning in two directions: 1) the success of training deep neural network in estimating optical flow…

Computer Vision and Pattern Recognition · Computer Science 2019-01-10 Bin Ma , Shubao Liu , Yingxuan Zhi , Qi Song

Robust road segmentation in all road conditions is required for safe autonomous driving and advanced driver assistance systems. Supervised deep learning methods provide accurate road segmentation in the domain of their training data but…

Computer Vision and Pattern Recognition · Computer Science 2025-03-03 Eerik Alamikkotervo , Henrik Toikka , Kari Tammi , Risto Ojala

Autonomous vehicles operate in a dynamic environment, where the speed with which a vehicle can perceive and react impacts the safety and efficacy of the system. LiDAR provides a prominent sensory modality that informs many existing…

Computer Vision and Pattern Recognition · Computer Science 2020-05-06 Wei Han , Zhengdong Zhang , Benjamin Caine , Brandon Yang , Christoph Sprunk , Ouais Alsharif , Jiquan Ngiam , Vijay Vasudevan , Jonathon Shlens , Zhifeng Chen

Scene flow estimation is a crucial component in the development of autonomous driving and 3D robotics, providing valuable information for environment perception and navigation. Despite the advantages of learning-based scene flow estimation…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Rahul Ahuja , Chris Baker , Wilko Schwarting

We propose a novel scene flow method that captures 3D motions from point clouds without relying on ground-truth scene flow annotations. Due to the irregularity and sparsity of point clouds, it is expensive and time-consuming to acquire…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Bing Li , Cheng Zheng , Guohao Li , Bernard Ghanem

Creating large LiDAR datasets with pixel-level labeling poses significant challenges. While numerous data augmentation methods have been developed to reduce the reliance on manual labeling, these methods predominantly focus on static scenes…

Computer Vision and Pattern Recognition · Computer Science 2024-04-18 Jiaxing Zhao , Peng Zheng , Rui Ma

Most end-to-end Multi-Object Tracking (MOT) methods face the problems of low accuracy and poor generalization ability. Although traditional filter-based methods can achieve better results, they are difficult to be endowed with optimal…

Computer Vision and Pattern Recognition · Computer Science 2021-03-08 Guangyao Zhai , Xin Kong , Jinhao Cui , Yong Liu , Zhen Yang

Object detection and motion parameters estimation are crucial tasks for self-driving vehicle safe navigation in a complex urban environment. In this work we propose a novel real-time approach of temporal context aggregation for motion…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Artem Filatov , Andrey Rykov , Viacheslav Murashkin

Due to the scarcity of annotated scene flow data, self-supervised scene flow learning in point clouds has attracted increasing attention. In the self-supervised manner, establishing correspondences between two point clouds to approximate…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Ruibo Li , Guosheng Lin , Lihua Xie

Representing diverse and plausible future trajectories is critical for motion forecasting in autonomous driving. However, efficiently capturing these trajectories in a compact set remains challenging. This study introduces a novel approach…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Abhishek Vivekanandan , J. Marius Zöllner

Accurate 3D object detection in LiDAR point clouds is crucial for autonomous driving systems. To achieve state-of-the-art performance, the supervised training of detectors requires large amounts of human-annotated data, which is expensive…

Computer Vision and Pattern Recognition · Computer Science 2024-08-08 Christian Fruhwirth-Reisinger , Wei Lin , Dušan Malić , Horst Bischof , Horst Possegger

Scene flow characterizes the 3D motion between two LiDAR scans captured by an autonomous vehicle at nearby timesteps. Prevalent methods consider scene flow as point-wise unconstrained flow vectors that can be learned by either large-scale…

Computer Vision and Pattern Recognition · Computer Science 2024-03-22 Yancong Lin , Holger Caesar