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2021 IEEE 24th International Conference on Information Fusion (FUSION)最新文献

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Automatic context learning based on 360 imageries triangulation and 3D LiDAR validation 基于360度图像三角测量和3D激光雷达验证的自动上下文学习
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9627057
D. Herrero, David Sánchez Pedroche, Jesús García, J. M. Molina
Geographic data is very valuable for decision making. There are many hand-adapted datasets of roads or buildings available. However, datasets of other objects are not available, and it is very difficult to generate them manually. Remote sensing can help us to generate datasets of specific objects. This work introduces the main components for an automatic dataset generation process using any kind of sensors. To validate this process, an implementation using an open-source dataset is developed, geolocating traffic barriers using 360-degrees images captured from a car. Its results are validated with the positions extracted from a 3D LiDAR, solving the same problem at a much lower cost, providing an acceptable error for some use cases.
地理数据对决策非常有价值。有许多手工调整的道路或建筑物数据集可用。然而,其他对象的数据集是不可用的,并且很难手工生成它们。遥感可以帮助我们生成特定对象的数据集。这项工作介绍了使用任何类型的传感器自动数据集生成过程的主要组件。为了验证这一过程,开发了一个使用开源数据集的实现,使用从汽车上捕获的360度图像来定位交通障碍。其结果与3D激光雷达提取的位置进行了验证,以更低的成本解决了同样的问题,并为某些用例提供了可接受的误差。
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引用次数: 0
Towards Neural-Symbolic Learning to support Human-Agent Operations 面向支持人机操作的神经符号学习
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9626876
Daniel Cunnington, Mark Law, A. Russo, Jorge Lobo, L. Kaplan
This paper investigates neural-symbolic policy learning for information fusion in distributed human-agent operations. The architecture integrates a pre-trained neural network for feature extraction, with a state-of-the-art symbolic Inductive Logic Programming (ILP) system to learn policies, expressed as a set of logical rules. We firstly outline the challenge of policy learning within a military environment, by investigating the accuracy and confidence of neural network predictions given data outside the training distribution. Secondly, we introduce a neural-symbolic integration for policy learning and demonstrate that the symbolic ILP component, when considering the length of the learned policy rules, can generalise and learn a robust policy despite unstructured data observed at policy learning time originating from a different distribution than observed during training.
本文研究了分布式人机操作中信息融合的神经符号策略学习。该架构集成了用于特征提取的预训练神经网络,以及用于学习策略的最先进的符号归纳逻辑编程(ILP)系统,并将其表达为一组逻辑规则。我们首先概述了军事环境中政策学习的挑战,通过调查给定训练分布之外的数据的神经网络预测的准确性和置信度。其次,我们引入了用于策略学习的神经-符号集成,并证明了符号ILP组件在考虑所学策略规则的长度时,可以泛化和学习稳健的策略,尽管在策略学习时观察到的非结构化数据来自不同于训练时观察到的分布。
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引用次数: 0
Peacock: a Benchmarks Generation Framework for High-Level Information Fusion Evaluation 高级信息融合评估的基准生成框架
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9627038
C. Laudy, N. Museux
This work presents Peacock, a framework that aims at generating benchmarks for High level information fusion. Peacock makes it possible to generate several structured information sets, that are representative, coherent, diversified and controlled. The principle of Peacock lies in the generation of several information sets from one scenario. The scenario contains on the one hand, a storyboard of perfectly described events and a chronology of perfectly structured information. On the other hand, it contains communicating entities, organized in a network. These entities will alter the scenario events as well as the information exchanged. The modifications on the information consist in the introduction of imperfections (over-precision, imprecision, incompleteness, uncertainty, irrelevance, incomprehension) according to the entities communication behaviors. In this paper, we present the principles under the Peacock framework. We detail its characteristics and describe its implementation.
这项工作提出了Peacock,一个旨在为高级信息融合生成基准的框架。孔雀使得生成几个具有代表性、连贯性、多样性和可控性的结构化信息集成为可能。孔雀算法的原理在于从一个场景中生成多个信息集。这个场景一方面包含了一个完美描述事件的故事板和一个完美结构信息的年表。另一方面,它包含组织在网络中的通信实体。这些实体将改变场景事件以及交换的信息。对信息的修改主要表现在根据实体的通信行为引入缺陷(过精确、不精确、不完整、不确定、不相关、不可理解)。在本文中,我们提出了孔雀框架下的原则。详细介绍了其特点和实现方法。
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引用次数: 0
A Neyman-Pearson Criterion-Based Neural Network Detector for Maritime Radar 基于Neyman-Pearson准则的海事雷达神经网络检测器
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9626944
Z. Baird, M. McDonald, S. Rajan, Simon J. Lee
A convolutional neural network (CNN) detector with fixed probability of false alarm (PFA) for application to non-coherent wide area surveillance (WAS) maritime radars is proposed. This detector is trained using a novel cost function-based on Neyman-Pearson (NP) criterion. The use of machine learning allows the detector to learn a complex non-linear model of sea clutter and obviates the need for specifying complex, likely intractable, target plus clutter statistical models. The NP-CNN is shown to perform better than a simple cell-averaging constant false alarm rate (CA-CFAR) statistical detector and a CNN trained using the cross-entropy cost function.
提出了一种用于非相干广域监视(WAS)海上雷达的固定虚警概率卷积神经网络(CNN)检测器。该检测器使用基于Neyman-Pearson (NP)准则的新型代价函数进行训练。机器学习的使用使探测器能够学习复杂的非线性海杂波模型,并消除了指定复杂的,可能难以处理的目标加杂波统计模型的需要。结果表明,NP-CNN的性能优于简单的细胞平均常数虚警率(CA-CFAR)统计检测器和使用交叉熵代价函数训练的CNN。
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引用次数: 4
Clustering of maritime trajectories with AIS features for context learning 基于AIS特征的海事轨迹聚类研究
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9626956
David Sánchez Pedroche, D. Herrero, J. G. Herrero, J. M. M. López
This paper presents an analysis on Automatic Identification System (AIS) real world ship data to build a system with the capability to extract useful information for an anomaly detection problem. The study focuses on the adjustment of a clustering technique to trajectory data, specifically using a DBSCAN algorithm that is adapted by means of two approaches. On the one hand, the DTW trajectory similarity metric is used to obtain a distance between two trajectories. On the other hand, an extraction of features of interest from each trajectory allowing a summary of the trajectory in a single multidimensional instance. The results show that both approaches are feasible, although not very scalable to larger problems due to the computational complexity of the used algorithms. In addition, the study analyses possible uses of these approaches to existing data mining problems.
本文对船舶自动识别系统(AIS)的实际数据进行了分析,以建立一个能够提取有用信息的异常检测系统。该研究的重点是调整聚类技术的轨迹数据,特别是使用DBSCAN算法,它是由两种方法适应。一方面,使用DTW轨迹相似度度量来获得两个轨迹之间的距离;另一方面,从每个轨迹中提取感兴趣的特征,允许在单个多维实例中总结轨迹。结果表明,这两种方法都是可行的,尽管由于所使用的算法的计算复杂性而无法很好地扩展到更大的问题。此外,本研究还分析了这些方法对现有数据挖掘问题的可能用途。
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引用次数: 3
Impact of Georegistration Accuracy on Wide Area Motion Imagery Object Detection and Tracking 地理配准精度对广域运动图像目标检测与跟踪的影响
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9626982
Noor M. Al-Shakarji, Ke Gao, F. Bunyak, H. Aliakbarpour, Erik Blasch, Priya Narayaran, G. Seetharaman, K. Palaniappan
Advances in sensor technologies and embedded low-power processing provide new opportunities for using Wide Area Motion Imagery (WAMI) across a spectrum of mapping and monitoring applications covering large geospatial areas for extended time periods. While significant developments have been made in video analytics for ground or low-altitude aerial videos, methods for WAMI have been limited due to lack of benchmarking datasets, data format complexities, lack of labeled training videos, and high data processing requirements. This paper aims to help advance the broader use of WAMI by evaluating the georegistration accuracy and its impact on downstream video analytics using two benchmark datasets (CLIF 2007, ABQ 2013). In addition to the current intensified interest in using deep learning for aerial object recognition and tracking, this paper motivates the need for further development of more robust and fast georegistration algorithms for multi-camera WAMI systems.
传感器技术和嵌入式低功耗处理的进步为在覆盖大地理空间区域的长时间范围内使用广域运动图像(WAMI)提供了新的机会。虽然在地面或低空航空视频的视频分析方面取得了重大进展,但由于缺乏基准数据集、数据格式复杂性、缺乏标记训练视频和高数据处理要求,WAMI的方法受到限制。本文旨在通过使用两个基准数据集(CLIF 2007, ABQ 2013)评估地理配准精度及其对下游视频分析的影响,帮助推进WAMI的更广泛使用。除了当前对使用深度学习进行空中目标识别和跟踪的兴趣日益浓厚之外,本文还激发了进一步开发多相机WAMI系统的更鲁棒和快速地理配准算法的需求。
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引用次数: 1
Improving Lidar-Based Semantic Segmentation of Top-View Grid Maps by Learning Features in Complementary Representations 利用互补表示学习特征改进基于激光雷达的顶视图网格地图语义分割
Pub Date : 2021-11-01 DOI: 10.48550/arXiv.2203.01151
Frank Bieder, Maximilian Link, Simon Romanski, Haohao Hu, C. Stiller
In this paper we introduce a novel way to predict semantic information from sparse, single-shot LiDAR measurements in the context of autonomous driving. In particular, we fuse learned features from complementary representations. The approach is aimed specifically at improving the semantic segmentation of top-view grid maps. Towards this goal the 3D LiDAR point cloud is projected onto two orthogonal 2D representations. For each representation a tailored deep learning architecture is developed to effectively extract semantic information which are fused by a superordinate deep neural network. The contribution of this work is threefold: (1) We examine different stages within the segmentation network for fusion. (2) We quantify the impact of embedding different features. (3) We use the findings of this survey to design a tailored deep neural network architecture leveraging respective advantages of different representations. Our method is evaluated using the SemanticKITTI dataset which provides a point-wise semantic annotation of more than 23.000 LiDAR measurements.
在本文中,我们介绍了一种新的方法来预测自动驾驶背景下稀疏的、单次激光雷达测量的语义信息。特别是,我们融合了从互补表示中学习到的特征。该方法旨在改进顶视图网格图的语义分割。为了实现这一目标,3D激光雷达点云被投影到两个正交的二维表示中。对于每种表示,开发了定制的深度学习架构来有效地提取语义信息,这些信息由上级深度神经网络融合。这项工作的贡献有三个方面:(1)我们检查了分割网络中的不同阶段进行融合。(2)我们量化了嵌入不同特征的影响。(3)根据调查结果,利用不同表征的各自优势,设计了量身定制的深度神经网络架构。我们的方法是使用SemanticKITTI数据集进行评估的,该数据集提供了超过23000个激光雷达测量值的逐点语义注释。
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引用次数: 1
Approximately Optimal Radar Resource Management for Multi-Sensor Multi-Target Tracking 多传感器多目标跟踪的近似最优雷达资源管理
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9627058
Bas Van Der Werk, M. Schöpe, H. Driessen
Radar Resource Management in a multi-sensor multi-target scenario is considered. A dynamic resource balancing algorithm is proposed which optimizes target task parameters assuming an underlying partially observable Markov decision process (POMDP). By applying stochastic optimization methods, such as policy rollout, the POMDP is solved non-myopically. The approximately optimal approach is formulated assuming a central processor. Subsequently, a distributed implementation is introduced that converges to the same results as given by the centralized implementation and requires less computational resources. The performance of the proposed approach for both centralized and distributed implementation is demonstrated through dynamic tracking scenarios.
研究了多传感器多目标场景下的雷达资源管理问题。提出了一种基于部分可观察马尔可夫决策过程的目标任务参数优化动态资源平衡算法。采用随机优化方法,如策略推出,非短视地解决了POMDP问题。近似最优的方法是假设一个中央处理器。随后,引入了一种分布式实现,该实现收敛到与集中式实现相同的结果,并且需要更少的计算资源。通过动态跟踪场景验证了该方法在集中式和分布式实现中的性能。
{"title":"Approximately Optimal Radar Resource Management for Multi-Sensor Multi-Target Tracking","authors":"Bas Van Der Werk, M. Schöpe, H. Driessen","doi":"10.23919/fusion49465.2021.9627058","DOIUrl":"https://doi.org/10.23919/fusion49465.2021.9627058","url":null,"abstract":"Radar Resource Management in a multi-sensor multi-target scenario is considered. A dynamic resource balancing algorithm is proposed which optimizes target task parameters assuming an underlying partially observable Markov decision process (POMDP). By applying stochastic optimization methods, such as policy rollout, the POMDP is solved non-myopically. The approximately optimal approach is formulated assuming a central processor. Subsequently, a distributed implementation is introduced that converges to the same results as given by the centralized implementation and requires less computational resources. The performance of the proposed approach for both centralized and distributed implementation is demonstrated through dynamic tracking scenarios.","PeriodicalId":226850,"journal":{"name":"2021 IEEE 24th International Conference on Information Fusion (FUSION)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116051908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Multi-target Joint Tracking and Classification Using the Trajectory PHD Filter 基于轨迹PHD滤波的多目标联合跟踪与分类
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9626914
Shaoxiu Wei, Boxiang Zhang, Wei Yi
To account for joint tracking and classification (JTC) of multiple targets from observation sets in presence of detection uncertainty, noise and clutter, this paper develops a new trajectory probability hypothesis density (TPHD) filter, which is referred to as the JTC-TPHD filter. The JTC-TPHD filter classifies different targets based on their motion models and each target is assigned with multiple class hypotheses. By using this strategy, we can not only obtain the category information of the targets, but also a more accurate trajectory estimation than the traditional TPHD filter. The JTC-TPHD filter is derived by finding the best Poisson posterior approximation over trajectories on an augmented state space using the Kullback-Leibler divergence (KLD) minimization. The Gaussian mixture is adopted for the implementation, which is referred to as the GMJTC-TPHD filter. The L-scan approximation is also presented for the GM-JTC-TPHD filter, which possesses lower computational burden. Simulation results show that the GM-JTC-TPHD filter can classify targets correctly and obtain accurate trajectory estimation.
针对存在检测不确定性、噪声和杂波的情况下观测集中多目标的联合跟踪与分类问题,本文提出了一种新的轨迹概率假设密度(TPHD)滤波器,简称JTC-TPHD滤波器。JTC-TPHD滤波器根据目标的运动模型对不同的目标进行分类,并为每个目标分配多个类假设。利用该策略不仅可以获得目标的类别信息,而且可以比传统的TPHD滤波器获得更准确的轨迹估计。JTC-TPHD滤波器是通过使用Kullback-Leibler散度(KLD)最小化在增广状态空间上的轨迹上找到最佳泊松后验逼近而导出的。采用高斯混合滤波器实现,称为GMJTC-TPHD滤波器。本文还对GM-JTC-TPHD滤波器提出了l扫描近似,该近似具有较低的计算量。仿真结果表明,GM-JTC-TPHD滤波器能够对目标进行正确分类,获得准确的弹道估计。
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引用次数: 1
Uncertainties in Galilean Spacetime 伽利略时空中的不确定性
Pub Date : 2021-11-01 DOI: 10.23919/fusion49465.2021.9627044
Lino Antoni Giefer
State estimation plays an important role in various types of systems, such as moving object tracking in the field of robotics and autonomous driving. The correct and accurate representation of the state has a huge impact on the estimation results in terms of accuracy and reliability. An elegant way for the encapsulation of the Euclidean state vector is the use of Lie groups, which allows appropriate handling of the associated uncertainties. Although better results are obtained compared to working in the Euclidean space, the commonly used representations such as the special Euclidean group exclude one important part: uncertainty in time. In this paper, we investigate this aspect and look at the problem of state estimation of moving objects from a different perspective. We propose the Galilei group as an elegant way of state representation and analyze the effect of uncertainties of the separate parameters on an object’s state represented as an event in spacetime. To show the practical applicability, we derive the necessary equations for the integration of our novel representation into an extended Kalman filter to serve as the basis of an object tracking scenario.
状态估计在各种类型的系统中起着重要的作用,例如机器人领域的运动目标跟踪和自动驾驶。状态的正确和准确的表示对估计结果的准确性和可靠性有着巨大的影响。封装欧几里得状态向量的一种优雅的方法是使用李群,它允许适当地处理相关的不确定性。虽然与在欧几里得空间中工作相比,得到了更好的结果,但常用的表示,如特殊欧几里得群,排除了一个重要的部分:时间的不确定性。在本文中,我们对这方面进行了研究,并从不同的角度研究了运动物体的状态估计问题。我们提出了伽利略群作为一种优雅的状态表示方式,并分析了单独参数的不确定性对作为时空事件表示的物体状态的影响。为了显示实际的适用性,我们推导了将我们的新表示集成到扩展卡尔曼滤波器中的必要方程,以作为目标跟踪场景的基础。
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引用次数: 0
期刊
2021 IEEE 24th International Conference on Information Fusion (FUSION)
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