自动机器人群的主要任务之一是共同决定最佳可用选项。实现需要在现实世界环境中可能不会总是可用的代理商之间的高质量沟通。在本文中,我们介绍了沟通受限的集体决策问题,其中环境的某些领域限制了代理人通过降低成功率或阻止沟通渠道进行沟通的能力。我们提出了一种分散的算法,用于绘制机器人群的环境特征,并在不知道通信环境的情况下改善沟通有限环境中的集体决策。我们的结果表明,让集体意识到通信环境可以在存在沟通限制的情况下提高收敛速度,而不会牺牲准确性的速度至少3倍。
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Recently, Smart Video Surveillance (SVS) systems have been receiving more attention among scholars and developers as a substitute for the current passive surveillance systems. These systems are used to make the policing and monitoring systems more efficient and improve public safety. However, the nature of these systems in monitoring the public's daily activities brings different ethical challenges. There are different approaches for addressing privacy issues in implementing the SVS. In this paper, we are focusing on the role of design considering ethical and privacy challenges in SVS. Reviewing four policy protection regulations that generate an overview of best practices for privacy protection, we argue that ethical and privacy concerns could be addressed through four lenses: algorithm, system, model, and data. As an case study, we describe our proposed system and illustrate how our system can create a baseline for designing a privacy perseverance system to deliver safety to society. We used several Artificial Intelligence algorithms, such as object detection, single and multi camera re-identification, action recognition, and anomaly detection, to provide a basic functional system. We also use cloud-native services to implement a smartphone application in order to deliver the outputs to the end users.
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In recent years, we have seen a significant interest in data-driven deep learning approaches for video anomaly detection, where an algorithm must determine if specific frames of a video contain abnormal behaviors. However, video anomaly detection is particularly context-specific, and the availability of representative datasets heavily limits real-world accuracy. Additionally, the metrics currently reported by most state-of-the-art methods often do not reflect how well the model will perform in real-world scenarios. In this article, we present the Charlotte Anomaly Dataset (CHAD). CHAD is a high-resolution, multi-camera anomaly dataset in a commercial parking lot setting. In addition to frame-level anomaly labels, CHAD is the first anomaly dataset to include bounding box, identity, and pose annotations for each actor. This is especially beneficial for skeleton-based anomaly detection, which is useful for its lower computational demand in real-world settings. CHAD is also the first anomaly dataset to contain multiple views of the same scene. With four camera views and over 1.15 million frames, CHAD is the largest fully annotated anomaly detection dataset including person annotations, collected from continuous video streams from stationary cameras for smart video surveillance applications. To demonstrate the efficacy of CHAD for training and evaluation, we benchmark two state-of-the-art skeleton-based anomaly detection algorithms on CHAD and provide comprehensive analysis, including both quantitative results and qualitative examination.
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Path prediction is an essential task for many real-world Cyber-Physical Systems (CPS) applications, from autonomous driving and traffic monitoring/management to pedestrian/worker safety. These real-world CPS applications need a robust, lightweight path prediction that can provide a universal network architecture for multiple subjects (e.g., pedestrians and vehicles) from different perspectives. However, most existing algorithms are tailor-made for a unique subject with a specific camera perspective and scenario. This article presents Pishgu, a universal lightweight network architecture, as a robust and holistic solution for path prediction. Pishgu's architecture can adapt to multiple path prediction domains with different subjects (vehicles, pedestrians), perspectives (bird's-eye, high-angle), and scenes (sidewalk, highway). Our proposed architecture captures the inter-dependencies within the subjects in each frame by taking advantage of Graph Isomorphism Networks and the attention module. We separately train and evaluate the efficacy of our architecture on three different CPS domains across multiple perspectives (vehicle bird's-eye view, pedestrian bird's-eye view, and human high-angle view). Pishgu outperforms state-of-the-art solutions in the vehicle bird's-eye view domain by 42% and 61% and pedestrian high-angle view domain by 23% and 22% in terms of ADE and FDE, respectively. Additionally, we analyze the domain-specific details for various datasets to understand their effect on path prediction and model interpretation. Finally, we report the latency and throughput for all three domains on multiple embedded platforms showcasing the robustness and adaptability of Pishgu for real-world integration into CPS applications.
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人类行为的不确定性对拥挤的城市环境中的自动驾驶构成了重大挑战。部分可观察到的马尔可夫决策过程(POMDP)为不确定性下的计划提供了一个原则的框架,通常利用蒙特卡洛抽样来实现在线绩效进行复杂的任务。但是,抽样还通过潜在缺失关键事件引起了安全问题。为了解决这个问题,我们提出了一种新的算法,学习对驾驶行为(领导者)的关注,这些算法在计划过程中学习了批判性人类行为。领导者学习了一个神经网络生成器,以实时情况下对人类行为的关注。它将注意力集成到信仰空间计划者中,使用重要性抽样来偏向关键事件。为了训练该算法,我们让注意力生成器和计划者组成了最小游戏。通过解决Min-Max游戏,领导者学会了无需人类标签即可执行风险意识的计划。
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对于由硬件和软件组件组成的复杂分布式系统而言,异常检测是一个重要的问题。对此类系统的异常检测的要求和挑战的透彻理解对于系统的安全性至关重要,尤其是对于现实世界的部署。尽管有许多解决问题的研究领域和应用领域,但很少有人试图对这种系统进行深入研究。大多数异常检测技术是针对某些应用域的专门开发的,而其他检测技术则更为通用。在这项调查中,我们探讨了基于图的算法在复杂分布式异质系统中识别和减轻不同类型异常的重要潜力。我们的主要重点是在分布在复杂分布式系统上的异质计算设备上应用时,可深入了解图。这项研究分析,比较和对比该领域的最新研究文章。首先,我们描述了现实世界分布式系统的特征及其在复杂网络中的异常检测的特定挑战,例如数据和评估,异常的性质以及现实世界的要求。稍后,我们讨论了为什么可以在此类系统中利用图形以及使用图的好处。然后,我们将恰当地深入研究最先进的方法,并突出它们的优势和劣势。最后,我们评估和比较这些方法,并指出可能改进的领域。
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计算机视觉上的最新进展已经提高了使用神经网络来理解人类姿势的应用的突出性。但是,尽管在最新数据集上的准确性一直在稳步提高,但这些数据集通常无法解决现实世界应用程序中所面临的挑战。这些挑战是与远离镜头的人们,人群中的人们和被遮挡的人打交道。结果,许多现实世界的应用程序已经对没有反映部署中存在的数据的数据进行了培训,从而导致表现不佳。本文介绍了ADG-POSE,这是一种自动生成用于现实世界姿势估计的数据集的方法。可以定制这些数据集以确定人的距离,拥挤和遮挡分布。接受我们方法培训的模型能够在存在这些挑战的情况下执行,而这些挑战在其他数据集中训练的挑战失败。使用ADG置端,基于现实世界骨架的动作识别的端到端精度可在中等距离和遮挡水平的场景上增加20%,并且在其他型号的表现胜过比随机性更好的场景中增加了4倍。
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