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2020 IEEE 3rd Connected and Automated Vehicles Symposium (CAVS)最新文献

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Pose-graph based Crowdsourced Mapping Framework 基于姿态图的众包映射框架
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334622
Anwesha Das, Joris IJsselmuiden, Gijs Dubbelman
Autonomous vehicles are dependent on High Definition (HD) maps. The process of generating and updating these maps is slow, expensive, and not scalable for the whole world. Crowdsourcing vehicle sensor data to generate and update maps is a solution to the problem. In this paper, we propose and evaluate an end-to-end pose-graph optimization-based mapping framework using crowdsourced vehicle data. The in-vehicle data acquisition framework and the cloud-based mapping framework that fuses data from a consumer-grade Global Navigation Satellite System (GNSS) receiver, an odometry sensor, and a stereo camera is described in detail. We focus on using stereo image pairs for loop-closure detection to combine crowdsourced data from different sessions that are affected by GNSS biases. We evaluate our framework on a data-set of more than 180 km recorded around the Eindhoven area. After the map generation process, the results exhibit a 56.23% improvement in maximum offset error and a 24.39% improvement in precision around the loop-closure area.
自动驾驶汽车依赖于高清(HD)地图。生成和更新这些地图的过程是缓慢的,昂贵的,并且不能扩展到整个世界。众包车辆传感器数据来生成和更新地图是解决这个问题的一种方法。在本文中,我们提出并评估了一个使用众包车辆数据的端到端基于姿态图优化的地图框架。详细描述了车载数据采集框架和基于云的制图框架,该框架融合了来自消费者级全球导航卫星系统(GNSS)接收器、里程计传感器和立体摄像机的数据。我们专注于使用立体图像对进行闭环检测,以结合受GNSS偏差影响的不同会议的众包数据。我们根据埃因霍温地区周围180多公里的数据集评估了我们的框架。在地图生成过程中,最大偏移误差提高了56.23%,环线附近的精度提高了24.39%。
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引用次数: 1
Machine Learning Techniques for Vehicle Matching with Non-Overlapping Visual Features 基于非重叠视觉特征的车辆匹配机器学习技术
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334562
Samuel Thornton, S. Dey
Emerging Vehicle-to-Everything (V2X) technologies promise to improve the perception of streets by enabling data sharing like camera views between multiple vehicles. However, to ensure accuracy of such enhanced perception, the problem of vehicle matching becomes important; the goal of a vehicle matching system is to identify if images of vehicles seen by different cameras correspond to the same vehicle. Such a system is necessary to avoid duplicate detections for a vehicle seen by multiple cameras and to avoid detections being discarded due to a false match being made. One of the most challenging scenarios in vehicle matching is when the camera positions have very large viewpoint differences, as will commonly be the case when the cameras are in geographically separate locations like in vehicles and street infrastructure. In these scenarios, traditional handcrafted features will not be sufficient to create these correspondences due to the lack of common visual features. In this paper we will examine the performance of random forests and neural networks as classifiers for both learned features and high level visual features when used for this vehicles matching problem. Additionally, a novel dataset of vehicles from cameras with very large viewpoint differences was recorded to validate our method; our preliminary results achieve high classification accuracy with low inference time which shows the feasibility of a real time vehicle matching system.
新兴的车联网(V2X)技术有望通过实现多辆车之间的摄像头视图等数据共享,改善对街道的感知。然而,为了保证这种增强感知的准确性,车辆匹配问题变得非常重要。车辆匹配系统的目标是识别不同摄像头看到的车辆图像是否对应于同一辆车。这样的系统是必要的,以避免对多个摄像头看到的车辆进行重复检测,并避免由于错误匹配而丢弃检测。车辆匹配中最具挑战性的场景之一是当摄像机位置具有非常大的视点差异时,通常情况下,摄像机位于地理位置分开的位置,如车辆和街道基础设施。在这些场景中,由于缺乏常见的视觉特征,传统的手工制作的特征将不足以创建这些对应。在本文中,我们将研究随机森林和神经网络在用于车辆匹配问题时作为学习特征和高级视觉特征分类器的性能。此外,还记录了一个新的车辆数据集,这些数据集来自视点差异非常大的摄像机,以验证我们的方法;初步结果表明,在较短的推理时间内,分类精度较高,表明了实时车辆匹配系统的可行性。
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引用次数: 5
Multi-Vehicle Coordination and Real-time Control of Connected and Automated Vehicles at Roundabouts 交叉路口网联自动车辆的多车协调与实时控制
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334596
Sina Alighanbari, N. Azad
Connectivity and automation enable vehicles to transfer crucial driving data and information to improve performance and safety. This paper proposes a nonlinear model predictive control (NMPC) control approach to address the problem of decentralized coordination of vehicles at roundabouts. A priority calculation logic is proposed and its performance is tested for different scenarios. We use simulations to test the controller and the Toyota Prius PHEV high-fidelity model is used in this paper for simulations. Simulation results show the proposed approach can determine priorities and improve performance. Also, results show that the addition of energy economy to the performance index can improve the fuel consumption of the vehicle. One of the major concerns in designing a controller for automotive applications is real-time implementation. The results of hardware-in-the-loop experiments show the real-time implementation of the controller.
连接和自动化使车辆能够传输关键的驾驶数据和信息,以提高性能和安全性。针对交叉路口车辆分散协调的问题,提出了一种非线性模型预测控制(NMPC)控制方法。提出了一种优先级计算逻辑,并在不同场景下对其性能进行了测试。本文以丰田普锐斯PHEV高保真模型为仿真对象对控制器进行了仿真测试。仿真结果表明,该方法可以确定优先级并提高性能。结果表明,在性能指标中加入能源经济性可以改善车辆的燃油消耗。在为汽车应用设计控制器时,主要关注的问题之一是实时实现。硬件在环实验结果表明了该控制器的实时性。
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引用次数: 4
Location Information Verification in Future Vehicular Networks 未来车载网络中的位置信息验证
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334684
Waheeda Jabbar, R. Malaney, Shihao Yan
In vehicular networks, vehicle claimed positions should be independently verified to help protect the wider network against location-spoofing attacks. In this work, we propose a new solution to the problem of location verification using the Cramer-Rao Bound (CRB) on location accuracy. Compared to known-optimal solutions, our technique has the advantage that it does not depend on a priori information on the probability of any vehicle being malicious. To analyze the performance of our new solution, we compare its operation, under Received Signal Strength (RSS) inputs, with a known optimal solution for this problem that assumes the probability of a vehicle being malicious is known. The results show that our new solution provides close to optimal performance over a wide range of anticipated channel conditions. Our solution is simple to deploy and can easily be integrated into a host of vehicular applications that use location information as an input.
在车载网络中,车辆声称的位置应该被独立验证,以帮助保护更广泛的网络免受位置欺骗攻击。在这项工作中,我们提出了一种新的解决方案,利用位置精度的Cramer-Rao边界(CRB)来解决位置验证问题。与已知的最优解决方案相比,我们的技术的优势在于它不依赖于任何车辆恶意概率的先验信息。为了分析我们的新解决方案的性能,我们将其在接收信号强度(RSS)输入下的操作与该问题的已知最优解决方案进行了比较,该解决方案假设车辆被恶意攻击的概率已知。结果表明,我们的新解决方案在广泛的预期信道条件下提供了接近最佳的性能。我们的解决方案部署简单,可以很容易地集成到大量使用位置信息作为输入的车载应用程序中。
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引用次数: 1
Evaluation of Sensor Tolerances and Inevitability for Pre-Crash Safety Systems in Real Case Scenarios 真实情况下碰撞前安全系统的传感器公差和必然性评估
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334578
Robert Lugner, Daniel Vriesman, Maximilian Inderst, G. Sequeira, Niyathipriya Pasupuleti, A. Zimmer, T. Brandmeier
Vehicle safety is an enabler of Automated Driving. The combination of active and passive vehicle safety can further increase the safety level of vehicle occupants. With integrated safety systems predicting inevitable crashes and the corresponding crash constellation, the activation of irreversible restraint systems like airbags will allow better crash mitigation and new interior concepts. One requirement is a comprehensive methodology to ensure the correct detection of the current traffic situation, the involved vehicles, and the collision inevitability. This paper presents a novel approach for crash evaluation in the pre-crash phase based on sensor fusion using camera and LiDAR for bullet vehicle detection in combination with physical motion-model-based collision detection. Urban intersection scenarios with typically severe side crashes are investigated using this methodology. The presented method can also be applied to investigate other traffic scenarios. One focus of this paper is the effect of sensor tolerances, which lead to inaccurate object data on the prediction of the inevitability of the crash. The analysis proves the potential of preemptive activation of airbag systems.
车辆安全是自动驾驶的推动者。主动与被动车辆安全相结合,可以进一步提高车辆乘员的安全水平。集成的安全系统预测不可避免的碰撞和相应的碰撞星座,激活不可逆的约束系统,如安全气囊,将实现更好的碰撞缓解和新的内饰概念。其中一个要求是有一个全面的方法来确保正确检测当前的交通状况、涉及的车辆和碰撞的必然性。本文提出了一种基于传感器融合的碰撞前评估方法,将相机和激光雷达用于子弹车检测,并结合基于物理运动模型的碰撞检测。使用该方法对具有典型严重侧碰撞的城市十字路口场景进行了研究。该方法也可以应用于其他交通场景的研究。本文的一个重点是传感器公差的影响,导致不准确的目标数据对预测碰撞的必然性。分析证明了先发制人激活安全气囊系统的潜力。
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引用次数: 4
A Methodology to Determine Test Scenarios for Sensor Constellation Evaluations 确定传感器星座评估测试场景的方法
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334603
Monish Gogri, Maike Hartstern, W. Stork, T. Winsel
This paper proposes a methodology for determining strategically bundled relevant test scenarios for the simulation- based evaluation of sensor constellations. This is achieved by gogri identification of important use cases for the autonomous driving operation, (b) the conversion of these use cases into Regions of Interests (ROIs) around the vehicle along with (c) a definition of a critical index (CI) for each of these regions and (d) a procedure to derive crucial scenarios and (e) categorise them into scenario families. The derived test scenarios help to optimise the field of view of the sensor constellation for the most important regions around the ego vehicle. The novelty lies in its independence from traditional methods of deriving test scenarios and its capability of providing targeted feedback to improve the sensor constellation at the identified pain points. The test scenario families can reduce the development time of highly automated vehicles by providing virtual testing of the sensor constellation performance in the vehicle concept phase.
本文提出了一种确定基于仿真的传感器星座评估策略捆绑相关测试场景的方法。这是通过精确识别自动驾驶操作的重要用例来实现的,(b)将这些用例转换为车辆周围的兴趣区域(roi),以及(c)定义每个区域的关键指数(CI),以及(d)导出关键场景的程序,以及(e)将它们分类到场景族中。衍生的测试场景有助于优化传感器星座在车辆周围最重要区域的视野。它的新颖之处在于它独立于传统的推导测试场景的方法,并能够提供有针对性的反馈,以改善识别痛点的传感器群。测试场景族可以在车辆概念阶段提供传感器星座性能的虚拟测试,从而缩短高度自动化车辆的开发时间。
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引用次数: 2
Validation and testing of the decentralized architecture for the occupancy grid filtering pipeline 占用网格过滤管道分散式架构的验证与测试
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334587
Kenan Softić, Haris Šikić, Amar Civgin, G. Stettinger, D. Watzenig
A reliable and precise model of the environment is of the highest importance for autonomous vehicles. Occupancy grids are a well-known approach for environment modeling and are a crucial part of multiple autonomous driving functionalities. The standard method is to use a single 2D occupancy grid to model the environment using nonground points. In this paper, we propose a decentralized occupancy grid filtering chain (pipeline) where a high-density 64-layer LiDAR provided the input to our pipeline. Our approach enables us to obtain detailed 2D and 3D models of the environment simultaneously. The pipeline was validated on different scenarios in both simulation and real world. The performance of the designed occupancy grid pipeline was evaluated by the proposed key performance indicators (KPIs) based on accuracy. The results have shown that the approach was able to extract free space information with a high degree of accuracy, while reducing the size of the unobserved area in the grid compared to the standard methods and achieving real-time performance.
对于自动驾驶汽车来说,可靠而精确的环境模型至关重要。占用网格是一种众所周知的环境建模方法,也是多种自动驾驶功能的关键部分。标准的方法是使用单个二维占用网格来使用非地点对环境进行建模。在本文中,我们提出了一个分散的占用网格过滤链(管道),其中高密度的64层激光雷达为我们的管道提供输入。我们的方法使我们能够同时获得环境的详细2D和3D模型。该管道在模拟和现实世界的不同场景中进行了验证。利用提出的关键性能指标(kpi)对设计占用网格管道的性能进行评估。结果表明,该方法能够以较高的精度提取自由空间信息,同时与标准方法相比,减少了网格中未观测区域的大小,并实现了实时性。
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引用次数: 0
CORR: Collaborative On-Road Reputation CORR:合作的道路声誉
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334679
Baik Hoh, Seyhan Uçar, Pratham Oza, Chinmaya Patnayak, K. Oguchi
Vehicles are getting more equipped with sensors and driver assistant systems. However, neither these technological advances nor traditional traffic enforcement systems are sufficient in protecting commuters from misbehaving drivers such as aggressive, distracted, and drunken drivers. That is why we have not observed any substantial improvement in road safety and driving experience in recent years despite those technological advances. Being motivated by the success of reputation systems (i.e., How’s My Driving (HMD), eBay, and Wikipedia), we present the concept of Collaborative On-Road Reputation (CORR) system and discuss the potential benefits and challenges ahead when we expand CORR to all vehicles. We focus on how to identify the anomalous driving behavior and propose a cooperative anomaly detection method where nearby connected vehicles collaborate to surface the anomalous driving behavior. Through extensive simulations, we demonstrate that CORR can identify the anomalous driving behavior by about 75% accuracy under a certain level of connected vehicle penetration rates.
汽车越来越多地配备了传感器和驾驶员辅助系统。然而,无论是这些技术进步还是传统的交通执法系统,都不足以保护通勤者免受行为不端的司机的伤害,比如咄咄逼人、心烦意乱和醉酒的司机。这就是为什么近年来尽管有了这些技术进步,我们在道路安全和驾驶体验方面没有看到任何实质性的改善。受到声誉系统成功的激励(例如,HMD、eBay和Wikipedia),我们提出了协同道路声誉(CORR)系统的概念,并讨论了将CORR扩展到所有车辆时可能带来的好处和挑战。研究了如何识别异常驾驶行为,提出了一种协同异常检测方法,在这种方法中,附近的互联车辆协同发现异常驾驶行为。通过大量的仿真,我们证明在一定水平的联网车辆普及率下,CORR识别异常驾驶行为的准确率约为75%。
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引用次数: 4
Utility of Traffic Information in Dynamic Routing: Is Sharing Information Always Useful? 动态路由中交通信息的效用:信息共享总是有用的吗?
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334640
M. Shaqfeh, Salah Hessien, E. Serpedin
Real-time traffic information can be utilized to enhance the efficiency of transportation networks by dynamically updating routing plans to mitigate traffic jams. However, an interesting question is whether the network coordinator should broadcast real-time traffic information to all network users or communicate it selectively to some of them. Which option enhances the network efficiency more?In this work, we demonstrate using simulation experiments that sharing real-time traffic information with all network users is sub-optimal, and it is actually better to share the information with a majority subset of the total population in order to improve the overall network performance. This result is valid under the assumption that each network user decides it’s route to destination locally.
实时交通信息可以通过动态更新路线计划来提高交通网络的效率,从而缓解交通堵塞。然而,一个有趣的问题是,网络协调器是否应该向所有网络用户广播实时交通信息,还是有选择地向其中一些用户通信。哪个选项更能提高网络效率?在这项工作中,我们通过模拟实验证明,与所有网络用户共享实时交通信息是次优的,实际上,为了提高整体网络性能,与总人口的大多数子集共享信息更好。在假设每个网络用户在本地决定到目的地的路由的情况下,这个结果是有效的。
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引用次数: 0
A Probabilistic Model for Visual Driver Gaze Approximation from Head Pose Estimation 基于头部姿态估计的视觉驾驶员注视近似概率模型
Pub Date : 2020-11-01 DOI: 10.1109/CAVS51000.2020.9334636
Mohsen Shirpour, S. Beauchemin, M. Bauer
The direction of a vehicle driver’s visual attention plays an essential role in the research on Advanced Driving Assistance Systems (ADAS) and autonomous vehicles. How a driver monitors the surrounding environment is at least partially descriptive of the driver’s situational awareness. While driver gaze is not explicitly related to head pose due to the interplay between head and eye movements, it may still provide an approximation of the visual attention that is sufficiently accurate for many applications. In this research, we propose a probabilistic method for describing the visual attention of drivers. This method applies a Gaussian Process Regression (GPR) technique that estimates the probability of the driver gaze direction, given head pose. We evaluate our model on real data collected during drives with an experimental vehicle in urban and suburban areas. Our experimental results show that 82.5% of drivers’ gaze lies within the 95% confidence interval predicted by our framework.
在高级驾驶辅助系统(ADAS)和自动驾驶汽车的研究中,驾驶员视觉注意的方向是至关重要的。驾驶员如何监控周围环境至少部分地描述了驾驶员的态势感知。虽然由于头部和眼球运动之间的相互作用,驾驶员的凝视与头部姿势没有明确的关系,但它仍然可以为许多应用提供足够准确的视觉注意力近似。在这项研究中,我们提出了一种概率方法来描述驾驶员的视觉注意力。该方法采用高斯过程回归(GPR)技术,在给定头部姿势的情况下,估计驾驶员凝视方向的概率。我们对我们的模型在城市和郊区的实验车辆驾驶过程中收集的真实数据进行了评估。我们的实验结果表明,82.5%的司机凝视在我们的框架预测的95%置信区间内。
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引用次数: 6
期刊
2020 IEEE 3rd Connected and Automated Vehicles Symposium (CAVS)
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