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In this work we study the use of 3D hand poses to recognize first-person dynamic hand actions interacting with 3D objects. Towards this goal, we collected RGB-D video sequences comprised of more than 100K frames of 45 daily hand action…

Computer Vision and Pattern Recognition · Computer Science 2018-04-11 Guillermo Garcia-Hernando , Shanxin Yuan , Seungryul Baek , Tae-Kyun Kim

The COVID-19 infection cases have surged globally, causing devastations to both the society and economy. A key factor contributing to the sustained spreading is the presence of a large number of asymptomatic or hidden spreaders, who mix…

Physics and Society · Physics 2021-03-18 Shuhong Huang , Jiachen Sun , Ling Feng , Jiarong Xie , Dashun Wang , Yanqing Hu

The rapid spread of COVID-19 has made manual contact tracing difficult. Thus, various public health authorities have experimented with automatic contact tracing using mobile applications (or "apps"). These apps, however, have raised…

Cryptography and Security · Computer Science 2021-02-04 Ruoxi Sun , Wei Wang , Minhui Xue , Gareth Tyson , Seyit Camtepe , Damith C. Ranasinghe

To contain the Coronavirus disease (COVID-19) pandemic, one of the non-pharmacological epidemic control measures in response to the COVID-19 outbreak is reducing the transmission rate of SARS-COV-2 in the population through (physical)…

Physics and Society · Physics 2020-05-19 Song Gao , Jinmeng Rao , Yuhao Kang , Yunlei Liang , Jake Kruse

The SARS-CoV-2 infectious outbreak has rapidly spread across the globe and precipitated varying policies to effectuate physical distancing to ameliorate its impact. In this study, we propose a new hybrid machine learning model, SIRNet, for…

Populations and Evolution · Quantitative Biology 2020-04-23 Nicholas Soures , David Chambers , Zachariah Carmichael , Anurag Daram , Dimpy P. Shah , Kal Clark , Lloyd Potter , Dhireesha Kudithipudi

{Recognizing human interactions is essential for social robots as it enables them to navigate safely and naturally in shared environments. Conventional robotic systems however often focus on obstacle avoidance, neglecting social cues…

The present paper addresses the task of reliably identifying critical contacts by using COVID-19 tracing apps. A reliable classification is crucial to ensure a high level of protection, and at the same time to prevent many people from being…

Signal Processing · Electrical Eng. & Systems 2020-08-12 Christoph Günther , Daniel Günther

The coronavirus pandemic is a new reality and it severely affects the modus vivendi of the international community. In this context, governments are rushing to devise or embrace novel surveillance mechanisms and monitoring systems to fight…

Cryptography and Security · Computer Science 2020-09-18 Tania Martin , Georgios Karopoulos , José L. Hernández-Ramos , Georgios Kambourakis , Igor Nai Fovino

This study develops a new method to quantify neighborhood activity levels at high spatial and temporal resolutions and test whether, and to what extent, behavioral responses to social distancing policies vary with socioeconomic and…

Computers and Society · Computer Science 2020-08-05 Boyeong Hong , Bartosz Bonczak , Arpit Gupta , Lorna Thorpe , Constantine E. Kontokosta

Social distancing can reduce the infection rates in respiratory pandemics such as COVID-19. Traffic intersections are particularly suitable for monitoring and evaluation of social distancing behavior in metropolises. We propose and evaluate…

Computer Vision and Pattern Recognition · Computer Science 2022-02-11 Zhengye Yang , Mingfei Sun , Hongzhe Ye , Zihao Xiong , Gil Zussman , Zoran Kostic

The outbreak of the novel coronavirus (COVID-19) is unfolding as a major international crisis whose influence extends to every aspect of our daily lives. Effective testing allows infected individuals to be quarantined, thus reducing the…

Machine Learning · Computer Science 2020-07-28 Rahul Singh , Fang Liu , Ness B. Shroff

We are concerned with the issue of detecting changes and their signs from a data stream. For example, when given time series of COVID-19 cases in a region, we may raise early warning signals of outbreaks by detecting signs of changes in the…

Applications · Statistics 2021-02-22 Kenji Yamanishi , Linchuan Xu , Ryo Yuki , Shintaro Fukushima , Chuan-hao Lin

The current COVID-19 pandemic is now getting contained, albeit at the cost of morethan2.3million human lives. A critical phase in any pandemic is the early detection of cases to develop preventive treatments and strategies. In the case of…

Image and Video Processing · Electrical Eng. & Systems 2021-04-15 Shehroz S. Khan , Faraz Khoshbakhtian , Ahmed Bilal Ashraf

It is well recognized that population heterogeneity plays an important role in the spread of epidemics. While individual variations in social activity are often assumed to be persistent, i.e. constant in time, here we discuss the…

Populations and Evolution · Quantitative Biology 2021-02-22 Alexei V. Tkachenko , Sergei Maslov , Tong Wang , Ahmed Elbanna , George N. Wong , Nigel Goldenfeld

There are several reports in India that indicate hospitals and quarantined centers are COVID-19 hotspots. In the absence of efficient contact tracing tools, Govt. and the policymakers may not be paying attention to the risk of…

Populations and Evolution · Quantitative Biology 2021-07-12 Tridip Sardar , Sourav Rana

We introduce a novel 3D hand pose estimator that can accurately recover the shape and pose of people's hands in a room from afar, typically from fixed cameras at room corners, in extremely low-resolution and frequently occluded views. Our…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Shu Nakamura , Ryo Kawahara , Genki Kinoshita , Ryosuke Hirai , Yasutomo Kawanishi , Shohei Nobuhara , Ko Nishino

Graph models are widely used to analyse diffusion processes embedded in social contacts and to develop applications. A range of graph models are available to replicate the underlying social structures and dynamics realistically. However,…

Social and Information Networks · Computer Science 2018-07-27 Md Shahzamal , Raja Jurdak , Bernard Mans , Frank de Hoog

The control of the COVID-19 pandemic requires a considerable reduction of contacts mostly achieved by imposing movement control up to the level of enforced quarantine. This has lead to a collapse of substantial parts of the economy.…

Social and Information Networks · Computer Science 2020-04-02 Christoph Günther , Michael Günther , Daniel Günther

Digital contact tracing and analysis of social distancing from smartphone location data are two prime examples of non-therapeutic interventions used in many countries to mitigate the impact of the COVID-19 pandemic. While many understand…

Econometrics · Economics 2020-06-11 Anindya Ghose , Beibei Li , Meghanath Macha , Chenshuo Sun , Natasha Ying Zhang Foutz

Robot-to-human object handover is an essential skill for robot assistants, from serving drinks at home to passing surgical tools in the operating room. We expect robots to perform handover robustly -- to release the object only after a firm…

Robotics · Computer Science 2026-05-07 Linfeng Li , Lin Shao , David Hsu