Outdoor social distancing behaviors changed during a pandemic: A longitudinal analysis using street view imagery

Matthew Martell, Chris Salazar, Nicole A Errett, Scott B Miles, Joseph Wartman and John Y Choe

PLOS ONE, 2024, vol. 19, issue 12, 1-17

Abstract: Social distancing, defined as maintaining a minimum interpersonal distance (often 6 ft or 1.83 m), is a non-pharmaceutical intervention to reduce infectious disease transmission. While numerous quantitative studies have examined people’s social distancing behaviors using mobile phone data, large-scale quantitative analyses of adherence to suggested minimum interpersonal distances are lacking. We analyzed pedestrians’ social distancing behaviors of using 3 years of street view imagery collected in a metropolitan city (Seattle, WA, USA) during the COVID-19 pandemic. We employed computer vision techniques to locate pedestrians in images, and a geometry-based algorithm to estimate physical distance between them. Our results indicate that social distancing behaviors correlated with key factors such as vaccine availability, seasonality, and local socioeconomic data. We also identified behavioral differences at various points of interest within the city (e.g., parks, schools, faith-based organizations, museums). This work represents a first of its kind longitudinal study of outdoor social distancing behaviors using computer vision. Our findings provide key insights for policymakers to understand and mitigate infectious disease transmission risks in outdoor environments.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0315132

DOI: 10.1371/journal.pone.0315132

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