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2014 IEEE Intelligent Vehicles Symposium Proceedings最新文献

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Accurate segmentation of moving objects and their shadows via brightness ratios and movement patterns 通过亮度比例和运动模式精确分割运动物体及其阴影
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856465
Huan Huang, Shiying Li, Kai Tang, Renfa Li
We present a two-stage method to accurately segment single or multiple moving objects and their shadows, especially when the moving objects have similar chromaticity and intensity to their shadows or when they are immersed in the shadows of other moving objects. Our algorithm first detects potential shadows via brightness ratios at each motion region, which is already separated from the background of an image sequence. Movement patterns are then applied to optimize the regions of moving objects and their shadows. We conducted experiments using our captured image sequences and public videos of Highway I and II to verify our method. The results demonstrate the method's efficiency quantitatively and qualitatively in comparison with ground truth and several advanced methods.
本文提出了一种两阶段分割单个或多个运动物体及其阴影的方法,特别是当运动物体与其阴影具有相似的色度和强度时,或者当运动物体沉浸在其他运动物体的阴影中时。我们的算法首先通过每个运动区域的亮度比来检测潜在的阴影,这些区域已经从图像序列的背景中分离出来。然后应用运动模式来优化移动对象及其阴影的区域。我们使用我们捕获的图像序列和高速公路I和II的公开视频进行了实验来验证我们的方法。结果表明,该方法与地面真值和几种先进方法相比,在定量和定性上都是有效的。
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引用次数: 0
Integrity monitoring of navigation systems using repetitive journeys 使用重复行程的导航系统的完整性监测
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856549
Clément Zinoune, P. Bonnifait, J. Guzman
Currently, Advanced Driving Assistance Systems (ADAS) increasingly rely on information stored in vehicle on board digital maps. The vehicle position is projected onto the map to establish oncoming road context. However, errors might exist in the road geometry stored in the maps. The integrity of this map-matched estimate must be monitored in real-time to avoid errors that can lead to hazardous situations. This paper presents a monitoring system and fault detection, isolation and adaptation formalism which benefits of multiple vehicle journeys (e.g. commuting). We demonstrate that it is possible to assert correct navigation information within the first journey to a new area and to isolate areas where the road geometry is erroneous after the second journey. The approach takes into account errors that might occur on the estimation of the global vehicle position. The proposed formalism was experimentally validated using a passenger vehicle driven in different map and GNSS conditions.
目前,先进驾驶辅助系统(ADAS)越来越依赖于车载数字地图中存储的信息。车辆位置被投影到地图上,以建立迎面而来的道路环境。但是,存储在地图中的道路几何形状可能存在错误。必须实时监测这种地图匹配估算的完整性,以避免可能导致危险情况的错误。本文提出了一种适用于多车出行(如通勤)的监测系统及其故障检测、隔离和自适应形式。我们证明,在第一次旅行到一个新区域时,可以断言正确的导航信息,并在第二次旅行后隔离道路几何形状错误的区域。该方法考虑了在估计全局车辆位置时可能出现的误差。用不同地图和GNSS条件下的乘用车进行了实验验证。
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引用次数: 3
Dual multi-targets tracking for ambiguities' identification and solving 基于双多目标跟踪的模糊性识别与求解
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856512
Valentin Magnier, D. Gruyer
In this paper a new algorithm for multi-targets tracking for roadway environment is proposed. This new approach is based on two parallel tracking stages. Its objective is to improve associations between targets and tracks by avoiding wrong associations which can cause errors on track's path determination. Another interesting point of the proposed approach lies in the fact that the two trackings stages are operated together only when association ambiguities are detected. otherwise, only one tracking is used. This mechanism leads to save computational resources. This contribution comes after previous works achieved at the LIVIC (Laboratory on interactions between vehicles, road network and drivers) regarding to Multi-Hypothesis Tracking (MHT) using the Dempster-Shafer Theory. These previous works discussed the potential interest of considering at the same time multi-hypothesis solutions instead of mono-hypothesis ones. This new approach is more focused on the identification of ambiguities, and runs simultaneously two tracking stages in order to solve these ambiguities thanks to the Dempster-Shafer multi-criteria association rules. The paper will therefore explain quickly the basis of the MHT and then describe the Dual Tracking Ambiguities' Solving (DTAS) algorithm. Finally, a relevant case of study showing the interest of the DTAS will be discussed.
本文提出了一种新的道路环境下的多目标跟踪算法。这种新方法基于两个并行跟踪阶段。它的目的是通过避免可能导致航迹路径确定错误的错误关联来改善目标和航迹之间的关联。该方法的另一个有趣之处在于,只有在检测到关联模糊时,两个跟踪阶段才会一起操作。否则,只使用一个跟踪。这种机制可以节省计算资源。这一贡献是在LIVIC(车辆,道路网络和驾驶员之间的相互作用实验室)先前使用Dempster-Shafer理论进行多假设跟踪(MHT)的工作之后完成的。这些先前的工作讨论了同时考虑多假设解而不是单假设解的潜在兴趣。这种新方法更侧重于模糊的识别,并同时运行两个跟踪阶段,以解决这些模糊,这要多亏了Dempster-Shafer多标准关联规则。因此,本文将快速解释MHT的基础,然后描述双跟踪歧义求解(DTAS)算法。最后,将讨论一个相关的研究案例,以显示DTAS的利益。
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引用次数: 6
Joint probabilistic pedestrian head and body orientation estimation 关节概率行人头部和身体方向估计
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856532
F. Flohr, Madalin Dumitru-Guzu, Julian F. P. Kooij, D. Gavrila
We present an approach for the joint probabilistic estimation of pedestrian head and body orientation in the context of intelligent vehicles. For both, head and body, we convert the output of a set of orientation-specific detectors into a full (continuous) probability density function. The parts are localized with a pictorial structure approach which balances part-based detector output with spatial constraints. Head and body orientation estimates are furthermore coupled probabilistically to account for anatomical constraints. Finally, the coupled single-frame orientation estimates are integrated over time by particle filtering. The experiments involve 37 pedestrian tracks obtained from an external stereo vision-based pedestrian detector in realistic traffic settings. We show that the proposed joint probabilistic orientation estimation approach reduces the mean head and body orientation error by 10 degrees and more.
提出了一种智能车辆中行人头部和身体方向的联合概率估计方法。对于头部和身体,我们将一组定向检测器的输出转换为完整的(连续的)概率密度函数。零件用图形结构方法进行定位,该方法平衡了基于零件的检测器输出和空间约束。头部和身体方向估计进一步耦合概率,以说明解剖约束。最后,通过粒子滤波对单帧方向估计随时间进行积分。实验涉及在现实交通环境中从基于外部立体视觉的行人检测器获得的37条行人轨迹。我们表明,所提出的联合概率方向估计方法将头和身体的平均方向误差降低了10度以上。
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引用次数: 34
Fuel-saving potentials of platooning evaluated through sparse heavy-duty vehicle position data 利用稀疏重型车辆位置数据评价队列行驶的节油潜力
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856540
Kuo-Yun Liang, J. Mårtensson, K. Johansson
Vehicle platooning is important for heavy-duty vehicle manufacturers, due to the reduced aerodynamic drag for the follower vehicles, which gives an overall lower fuel consumption. Heavy-duty vehicle drivers are aware this fact and sometimes drive close to other heavy-duty vehicles. However, it is not currently well known how many vehicles are actually driving in such spontaneous platoons today. This paper studies the platooning rate of 1,800 heavy-duty vehicles by analyzing sparse vehicle position data from a region in Europe during one day. Map-matching and path-inference algorithms are used to determine which paths the vehicles took. The spontaneous platooning rate is found to be 1.2 %, which corresponds to a total fuel saving of 0.07% compared to if none of the vehicles were platooning. Furthermore, we introduce several virtual coordination schemes. We show that coordinations can increase the platooning rate and fuel saving with a factor of ten with minor adjustments from the current travel schedule. The platooning rate and fuel savings can be significantly greater if higher flexibility is allowed.
对于重型汽车制造商来说,车辆队列非常重要,因为它可以减少跟随车辆的空气动力学阻力,从而降低整体油耗。重型车辆司机意识到这一事实,有时会靠近其他重型车辆行驶。然而,目前还不清楚有多少车辆真正在这种自发排中行驶。本文通过分析欧洲某地区一天内的稀疏车辆位置数据,研究了1800辆重型车辆的排队率。地图匹配和路径推理算法用于确定车辆所走的路径。自发排队率为1.2%,与没有车辆排队相比,相当于总燃油节省0.07%。此外,我们还介绍了几种虚拟协调方案。我们的研究表明,通过对当前出行计划进行微小调整,协调可以将队列行驶率和燃油节约提高十倍。如果允许更高的灵活性,排速和燃油节约将大大提高。
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引用次数: 53
Towards autonomous self-assessment of digital maps 迈向数字地图的自主自我评估
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856564
Oliver Hartmann, Michael Gabb, R. Schweiger, K. Dietmayer
Digital maps are becoming increasingly important for driver assistance systems: providing optimal lighting conditions in night scenarios, presenting the road geometry to the driver, or for usage in autonomous driving tasks. However, recorded digital maps own one drawback: due to road changes and inaccurate recordings, discrepancies between the map and the real world exist. Because these discrepancies can lead to severe application level failures, detection of map errors is essential to ensure overall system integrity. This work proposes a new approach to online verification of digital maps for automotive usage. In contrast to previous work, the described system is able to detect errors in front of the vehicle. On the basis of a large database of map geometry and sensor information, a neural network is trained to classify the digital map integrity by optimally fusing different information sources depending on their strength and reliability. Although generally applicable, it is shown that a combination of orthogonal measurement principles is greatly beneficial for this decision task. A radar sensor, infra-red imagery and road geometry information estimated from visible light images are employed as input for the neural fusion. Experiments on real-world data verify the proposed concepts.
数字地图在驾驶辅助系统中变得越来越重要:在夜间场景中提供最佳照明条件,向驾驶员展示道路几何形状,或用于自动驾驶任务。然而,记录的数字地图有一个缺点:由于道路变化和不准确的记录,地图和现实世界之间存在差异。由于这些差异可能导致严重的应用程序级故障,因此检测映射错误对于确保整个系统的完整性至关重要。这项工作提出了一种新的方法来在线验证汽车使用的数字地图。与以前的工作相比,所描述的系统能够检测到车辆前方的错误。在庞大的地图几何信息和传感器信息数据库的基础上,根据不同信息源的强度和可靠性,对不同信息源进行最优融合,训练神经网络对数字地图完整性进行分类。虽然一般适用,但正交测量原理的组合对该决策任务非常有利。采用雷达传感器、红外图像和从可见光图像估计的道路几何信息作为神经融合的输入。实际数据的实验验证了所提出的概念。
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引用次数: 15
The need for GNSS position integrity and authentication in ITS: Conceptual and practical limitations in urban contexts ITS中GNSS位置完整性和认证的需求:城市背景下的概念和实践限制
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856485
D. Margaria, E. Falletti, T. Acarman
This tutorial paper highlights possible issues related to the integrity and authentication of the GNSS position in road applications. In fact, the Global Navigation Satellite System (GNSS) community is already aware of the conceptual and practical problems related to the availability of the position integrity (i.e. position confidence, protection level) and authentication in urban scenarios. However, these issues seem not to be widely known in the Intelligent Transportation Systems (ITS) domain. These limitations need to be carefully considered and addressed in the perspective of deploying reliable and robust systems based on positioning information.
本教程重点介绍了在道路应用中与GNSS位置的完整性和身份验证相关的可能问题。事实上,全球导航卫星系统(GNSS)社区已经意识到与城市场景中位置完整性(即位置置信度,保护级别)和身份验证的可用性相关的概念和实际问题。然而,这些问题在智能交通系统(ITS)领域似乎并没有得到广泛的了解。在部署基于定位信息的可靠和健壮的系统时,需要仔细考虑和解决这些限制。
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引用次数: 14
Studying the driving performance of drivers with children aboard by means of a framework for flexible experiment configuration 采用柔性实验配置框架,研究带小孩驾驶员的驾驶性能
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856615
C. Olaverri-Monreal, Joel Gonçalves, K. Bengler
Traveling with children in tow can pose a serious distraction to the driver, effectively drawing much of the necessary attention away from the road and causing a disruption in normal driving patterns. In this paper we investigate the driver's capacity to operate a vehicle safely when being exposed to a noise stimulus, specifically in the form of a crying baby for an extended period of time. For this purpose, we developed a tailored driving simulator framework to efficiently configure new experiments, built on modular components to make it easier to upgrade and update the experiment scenario and overall conditions. We then compared the driving behavior of parents to individuals without children focusing particularly on the affects on driving performance when a sudden event occurred on the road. We aim to study driving patterns under stressful conditions such as having children as occupants in the vehicle to be able to classify drivers for background training purposes regarding in-vehicle behavior. Results have shown the tendencies of parents when having a baby in the vehicle to produce better driving performances.
带着孩子一起旅行可能会严重分散司机的注意力,有效地将大部分必要的注意力从道路上转移开,并导致正常驾驶模式的中断。在本文中,我们研究了驾驶员在暴露于噪音刺激时安全操作车辆的能力,特别是长时间以婴儿哭泣的形式。为此,我们开发了一个量身定制的驾驶模拟器框架,以有效地配置新的实验,建立在模块化组件上,使其更容易升级和更新实验场景和整体条件。然后,我们比较了有父母和没有孩子的人的驾驶行为,特别关注道路上发生突发事件时对驾驶表现的影响。我们的目标是研究在压力条件下的驾驶模式,例如车内有儿童,以便能够对驾驶员进行分类,以便对车内行为进行背景培训。结果表明,父母在车内携带婴儿时倾向于产生更好的驾驶表现。
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引用次数: 6
Understanding how camera configuration and environmental conditions affect appearance-based localization 了解相机配置和环境条件如何影响基于外观的定位
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856605
Aayush Bansal, H. Badino, Daniel F. Huber
Localization is a central problem for intelligent vehicles. Visual localization can supplement or replace GPS-based localization approaches in situations where GPS is unavailable or inaccurate. Although visual localization has been demonstrated in a variety of algorithms and systems, the problem of how to best configure such a system remains largely an open question. Design choices, such as “where should the camera be placed?” and “how should it be oriented?” can have substantial effect on the cost and robustness of a fielded intelligent vehicle. This paper analyzes how different sensor configuration parameters and environmental conditions affect visual localization performance with the goal of understanding what causes certain configurations to perform better than others and providing general principles for configuring systems for visual localization. We ground the investigation using extensive field testing of a visual localization algorithm, and the data sets used for the analysis are made available for comparative evaluation.
定位是智能汽车的核心问题。在GPS不可用或不准确的情况下,视觉定位可以补充或取代基于GPS的定位方法。虽然视觉定位已经在各种算法和系统中得到了证明,但如何最好地配置这样一个系统的问题在很大程度上仍然是一个悬而未决的问题。设计选择,比如“相机应该放在哪里?”和“它应该如何定位?”会对现场智能车辆的成本和稳健性产生重大影响。本文分析了不同的传感器配置参数和环境条件对视觉定位性能的影响,目的是了解导致某些配置比其他配置表现更好的原因,并提供配置视觉定位系统的一般原则。我们使用视觉定位算法的广泛现场测试来进行调查,并提供用于分析的数据集用于比较评估。
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引用次数: 27
Semivirtual simulations for the evaluation of vision-based ADAS 基于视觉的ADAS评估的半虚拟仿真
Pub Date : 2014-06-08 DOI: 10.1109/IVS.2014.6856593
M. Zofka, R. Kohlhaas, T. Schamm, Johann Marius Zöllner
The design and development process of advanced driver assistance systems (ADAS) is divided into different phases, where the algorithms are implemented as a model, then as software and finally as hardware. Since it is unfeasable to simulate all possible driving situations for environmental perception and interpretation algorithms, there is still a need for expensive and time-consuming real test drives of thousands of kilometers. Therefore we present a novel approach for testing and evaluation of vision-based ADAS, where reliable simulations are fused with recorded data from test drives to provide a task-specific reference model. This approach provides ground truth with much higher reliability and reproducability than real test drives and authenticity than using pure simulations and can be applied already in early steps of the design process. We illustrate the effectiveness of our approach by testing a vision-based collision mitigation system on recordings of a german highway.
先进驾驶辅助系统(ADAS)的设计和开发过程分为不同的阶段,其中算法作为模型实现,然后作为软件实现,最后作为硬件实现。由于环境感知和解释算法无法模拟所有可能的驾驶情况,因此仍然需要进行昂贵且耗时的数千公里的真实试驾。因此,我们提出了一种新的方法来测试和评估基于视觉的ADAS,其中可靠的模拟与测试驱动的记录数据相融合,以提供特定任务的参考模型。这种方法提供了比真实的测试驱动和真实性更高的可靠性和可重复性,而不是使用纯粹的模拟,并且可以在设计过程的早期阶段应用。我们通过在德国高速公路的记录上测试基于视觉的碰撞缓解系统来说明我们方法的有效性。
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引用次数: 17
期刊
2014 IEEE Intelligent Vehicles Symposium Proceedings
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