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Reliable autonomous driving systems require accurate detection of traffic participants. To this end, multi-modal fusion has emerged as an effective strategy. In particular, 4D radar and LiDAR fusion methods based on multi-frame radar point…

Computer Vision and Pattern Recognition · Computer Science 2025-05-15 Xiangyuan Peng , Yu Wang , Miao Tang , Bierzynski Kay , Lorenzo Servadei , Robert Wille

Enhancing the efficiency of high-quality image generation using Diffusion Models (DMs) is a significant challenge due to the iterative nature of the process. Flow Matching (FM) is emerging as a powerful generative modeling paradigm based on…

Computer Vision and Pattern Recognition · Computer Science 2025-05-28 Pascal Zwick , Nils Friederich , Maximilian Beichter , Lennart Hilbert , Ralf Mikut , Oliver Bringmann

Given two consecutive RGB-D images, we propose a model that estimates a dense 3D motion field, also known as scene flow. We take advantage of the fact that in robot manipulation scenarios, scenes often consist of a set of rigidly moving…

Robotics · Computer Science 2018-07-25 Lin Shao , Parth Shah , Vikranth Dwaracherla , Jeannette Bohg

Scene flow represents the 3D motion of every point in the dynamic environments. Like the optical flow that represents the motion of pixels in 2D images, 3D motion representation of scene flow benefits many applications, such as autonomous…

Computer Vision and Pattern Recognition · Computer Science 2021-06-09 Guangming Wang , Xinrui Wu , Zhe Liu , Hesheng Wang

Interpreting motion captured in image sequences is crucial for a wide range of computer vision applications. Typical estimation approaches include optical flow (OF), which approximates the apparent motion instantaneously in a scene, and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Tanner D. Harms , Steven L. Brunton , Beverley J. McKeon

Accurate 3D scene flow estimation is critical for autonomous systems to navigate dynamic environments safely, but creating the necessary large-scale, manually annotated datasets remains a significant bottleneck for developing robust…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Ajinkya Khoche , Qingwen Zhang , Yixi Cai , Sina Sharif Mansouri , Patric Jensfelt

This article describes a multi-modal method using simulated Lidar data via ray tracing and image pixel loss with differentiable rendering to optimize an object's position with respect to an observer or some referential objects in a computer…

Systems and Control · Electrical Eng. & Systems 2023-09-07 Sean Zanyk-McLean , Krishna Kumar , Paul Navratil

Deep learning models for object detection in autonomous driving have recently achieved impressive performance gains and are already being deployed in vehicles worldwide. However, current models require increasingly large datasets for…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Esteban Rivera , Loic Stratil , Markus Lienkamp

LiDAR-based 3D object detection is a fundamental task in the field of autonomous driving. This paper explores the unique advantage of Frequency Modulated Continuous Wave (FMCW) LiDAR in autonomous perception. Given a single frame FMCW point…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Yining Shi , Kun Jiang , Xin Zhao , Kangan Qian , Chuchu Xie , Tuopu Wen , Mengmeng Yang , Diange Yang

3D object detection has become an emerging task in autonomous driving scenarios. Previous works process 3D point clouds using either projection-based or voxel-based models. However, both approaches contain some drawbacks. The voxel-based…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Qingdong He , Zhengning Wang , Hao Zeng , Yijun Liu , Shuaicheng Liu , Bing Zeng

Moving object segmentation based on LiDAR is a crucial and challenging task for autonomous driving and mobile robotics. Most approaches explore spatio-temporal information from LiDAR sequences to predict moving objects in the current frame.…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Zhiheng Li , Yubo Cui , Jiexi Zhong , Zheng Fang

Automotive traffic scenes are complex due to the variety of possible scenarios, objects, and weather conditions that need to be handled. In contrast to more constrained environments, such as automated underground trains, automotive…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Felix Nobis , Ehsan Shafiei , Phillip Karle , Johannes Betz , Markus Lienkamp

Despite the progress of learning-based methods for 6D object pose estimation, the trade-off between accuracy and scalability for novel objects still exists. Specifically, previous methods for novel objects do not make good use of the target…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Sungphill Moon , Hyeontae Son , Dongcheol Hur , Sangwook Kim

An efficient 3D scene flow estimation method called PointFlowHop is proposed in this work. PointFlowHop takes two consecutive point clouds and determines the 3D flow vectors for every point in the first point cloud. PointFlowHop decomposes…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Pranav Kadam , Jiahao Gu , Shan Liu , C. -C. Jay Kuo

In this paper, we present a parallel architecture for a sensor fusion detection system that combines a camera and 1D light detection and ranging (lidar) sensor for object detection. The system contains two object detection methods, one…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 I-Hsi Kao , Ya-Zhu Yian , Jian-An Su , Yi-Horng Lai , Jau-Woei Perng , Tung-Li Hsieh , Yi-Shueh Tsai , Min-Shiu Hsieh

Recent learning-based methods for event-based optical flow estimation utilize cost volumes for pixel matching but suffer from redundant computations and limited scalability to higher resolutions for flow refinement. In this work, we take…

Computer Vision and Pattern Recognition · Computer Science 2025-06-23 Daikun Liu , Lei Cheng , Teng Wang , changyin Sun

LiDAR scene flow estimation is essential for autonomous driving, as it provides 3D motion for each point. Self-supervised approaches use static-dynamic classification to mitigate the imbalance between static and dynamic points, deriving…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Youngdong Jang , Gyeongrok Oh , Jong Wook Kim , Hyunju Ryu , Hyung-gun Chi , SeungHyeon Kim , Seungryong Kim , Jonghyun Choi , Sangpil Kim

An accurate and computationally efficient SLAM algorithm is vital for modern autonomous vehicles. To make a lightweight the algorithm, most SLAM systems rely on feature detection from images for vision SLAM or point cloud for laser-based…

Robotics · Computer Science 2021-03-22 Waqas Ali , Peilin Liu , Rendong Ying , Zheng Gong

Accurate 3D object detection is critical for autonomous driving, necessitating reliable, cost-effective sensors capable of operating in adverse weather conditions. Camera and millimeter-wave radar fusion has emerged as a promising solution;…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Bingyi Liu , Chuanhui Zhu , Hongfei Xue , Jian Teng , Jipeng Liu , Enshu Wang , Penglin Dai , Pu Wang

LiDAR segmentation is crucial for autonomous driving perception. Recent trends favor point- or voxel-based methods as they often yield better performance than the traditional range view representation. In this work, we unveil several key…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Lingdong Kong , Youquan Liu , Runnan Chen , Yuexin Ma , Xinge Zhu , Yikang Li , Yuenan Hou , Yu Qiao , Ziwei Liu