LSReg-Net: An End-to-End Registration Network for Large-Scale LiDAR Point Cloud in Autonomous Driving

IF 4.3 2区 综合性期刊 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Yucheng Tao;Xiuqing Yang;Hanqi Wang;Jian Wang;Zhiyuan Li;Huawei Liang
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引用次数: 0

Abstract

Large-scale point cloud registration is a fundamental problem for autonomous driving. To achieve alignment, most existing methods focus on local point cloud features for matching. However, these approaches fail to account for the sparse distribution of features in large-scale driving scenarios, limiting their effectiveness. This article introduces an end-to-end registration network, named LSReg-Net, specifically designed to address this challenge, offering a more reliable solution for large-scale LiDAR point cloud. The LSReg-Net performs registration by following sequential modules. First, this study develops a sampling strategy, distance-weighted farthest point sampling (DW-FPS), which effectively enhances sparse feature robustness. Then, a scale attention fusion (SAF) network is proposed to capture both local and geometric features. By considering both spatial sparsity and geometric context of the keypoints, the LSReg-Net obtains accurate correspondences after matching. Finally, a coarse-to-fine registration module is conducted with multilevel correspondences to acquire a precise rigid transformation. Extensive experiments on two large-scale LiDAR datasets demonstrate that the proposed approach outperforms existing registration methods. In addition, real-world experiments based on an experimental platform further validate the high efficiency.
自动驾驶中大规模激光雷达点云的端到端配准网络
大规模点云配准是自动驾驶的基础问题。为了实现对齐,大多数现有的方法都集中在局部点云特征上进行匹配。然而,这些方法未能考虑到大规模驾驶场景中特征的稀疏分布,限制了它们的有效性。本文介绍了一种名为lsregg - net的端到端注册网络,专门针对这一挑战而设计,为大规模激光雷达点云提供了更可靠的解决方案。lsregg - net通过以下顺序模块执行注册。首先,本文提出了一种有效增强稀疏特征鲁棒性的采样策略——距离加权最远点采样(DW-FPS)。然后,提出了一种尺度注意力融合(SAF)网络来捕获局部特征和几何特征。通过考虑关键点的空间稀疏性和几何上下文,lsregg - net在匹配后得到准确的对应关系。最后,进行多级对应的粗到精配准模块,得到精确的刚性变换。在两个大规模LiDAR数据集上的大量实验表明,该方法优于现有的配准方法。此外,基于实验平台的实际实验进一步验证了该方法的高效性。
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来源期刊
IEEE Sensors Journal
IEEE Sensors Journal 工程技术-工程:电子与电气
CiteScore
7.70
自引率
14.00%
发文量
2058
审稿时长
5.2 months
期刊介绍: The fields of interest of the IEEE Sensors Journal are the theory, design , fabrication, manufacturing and applications of devices for sensing and transducing physical, chemical and biological phenomena, with emphasis on the electronics and physics aspect of sensors and integrated sensors-actuators. IEEE Sensors Journal deals with the following: -Sensor Phenomenology, Modelling, and Evaluation -Sensor Materials, Processing, and Fabrication -Chemical and Gas Sensors -Microfluidics and Biosensors -Optical Sensors -Physical Sensors: Temperature, Mechanical, Magnetic, and others -Acoustic and Ultrasonic Sensors -Sensor Packaging -Sensor Networks -Sensor Applications -Sensor Systems: Signals, Processing, and Interfaces -Actuators and Sensor Power Systems -Sensor Signal Processing for high precision and stability (amplification, filtering, linearization, modulation/demodulation) and under harsh conditions (EMC, radiation, humidity, temperature); energy consumption/harvesting -Sensor Data Processing (soft computing with sensor data, e.g., pattern recognition, machine learning, evolutionary computation; sensor data fusion, processing of wave e.g., electromagnetic and acoustic; and non-wave, e.g., chemical, gravity, particle, thermal, radiative and non-radiative sensor data, detection, estimation and classification based on sensor data) -Sensors in Industrial Practice
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