Computer Vision-based Social Distancing Surveillance with Automated Camera Calibration for Large-scale Deployment

Sreetama Das, Anirban Nag, Dhruba Adhikary, Ramswaroop Jeevan Ram, BR Aravind, S. Ojha, Guruprasad M. Hegde
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引用次数: 3

Abstract

Social distancing has been suggested as one of the effective measures to break the chain of viral transmission in the ongoing COVID-19 pandemic. We herein describe a computer vision-based AI-assisted solution to aid compliance with social distancing norms. The solution consists of modules to detect and track people, and to identify distance violations. It provides the flexibility to choose between a tool-based mode requiring user input or a fully automated mode of camera calibration (devised in-house), making the latter suitable for large-scale deployments. We also outline a strategy to estimate the number of video feeds which can be supported in parallel for scalability. Finally, we discuss different metrics to assess the risk associated with social distancing violations, including the use of “violation clusters”, and how we can differentiate between transient or persistent violations. Our proposed solution performs satisfactorily under different test scenarios, processes video feed at real-time speed, as well as addresses data privacy regulations by blurring faces of detected people, making it ideal for deployments.
大规模部署中基于计算机视觉的自动摄像机标定社会距离监控
在新冠肺炎大流行中,保持社交距离被认为是打破病毒传播链的有效措施之一。我们在此描述了一种基于计算机视觉的人工智能辅助解决方案,以帮助遵守社交距离规范。该解决方案由检测和跟踪人员以及识别距离违规的模块组成。它提供了在需要用户输入的基于工具的模式或相机校准的全自动模式(内部设计)之间进行选择的灵活性,使后者适合大规模部署。我们还概述了一种策略来估计可以并行支持的视频馈送数量,以提高可扩展性。最后,我们讨论了评估与社交距离违规行为相关的风险的不同指标,包括“违规集群”的使用,以及我们如何区分短暂或持续违规行为。我们提出的解决方案在不同的测试场景下表现令人满意,以实时速度处理视频馈送,并通过模糊被检测人员的面部来解决数据隐私法规,使其成为部署的理想选择。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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