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    Falls from heights: A computer vision-based approach for safety harness detection

    Access Status
    Fulltext not available
    Authors
    Fang, W.
    Ding, L.
    Luo, H.
    Love, Peter
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Fang, W. and Ding, L. and Luo, H. and Love, P. 2018. Falls from heights: A computer vision-based approach for safety harness detection. Automation in Construction. 91: pp. 53-61.
    Source Title
    Automation in Construction
    DOI
    10.1016/j.autcon.2018.02.018
    ISSN
    0926-5805
    School
    School of Civil and Mechanical Engineering (CME)
    URI
    http://hdl.handle.net/20.500.11937/67470
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 Elsevier B.V. Falls from heights (FFH) are major contributors of injuries and deaths in construction. Yet, despite workers being made aware of the dangers associated with not wearing a safety harness, many forget or purposefully do not wear them when working at heights. To address this problem, this paper develops an automated computer vision-based method that uses two convolutional neural network (CNN) models to determine if workers are wearing their harness when performing tasks while working at heights. The algorithms developed are: (1) a Faster-R-CNN to detect the presence of a worker; and (2) a deep CNN model to identify the harness. A database of photographs of people working at heights was created from activities undertaken on several construction projects in Wuhan, China. The database was then used to test and train the developed networks. The precision and recall rates for the Faster R-CNN were 99% and 95%, and the CNN models 80% and 98%, respectively. The results demonstrate that the developed method can accurately detect workers not wearing their harness. Thus, the computer vision-based approach developed can be used by construction and safety managers as a mechanism to proactively identify unsafe behavior and therefore take immediate action to mitigate the likelihood of a FFH occurring.

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