Technical Papers
Oct 24, 2018

Automated Action Recognition Using an Accelerometer-Embedded Wristband-Type Activity Tracker

Publication: Journal of Construction Engineering and Management
Volume 145, Issue 1

Abstract

Automated worker action recognition helps to understand the state of workers’ actions, enabling effective management of work performance in terms of productivity, safety, and health issues. A wristband equipped with an accelerometer (e.g., activity tracker) allows to collect the data related to workers’ hand activities without interfering with their ongoing work. Considering that many construction activities involve unique hand movements, the use of acceleration data from a wristband has great potential for action recognition of construction activities. In this context, the authors examine the feasibility of the wrist-worn accelerometer-embedded activity tracker for automated action recognition. Specifically, masonry work was conducted to collect acceleration data in a laboratory. The classification accuracy of four classifiers—the k-nearest neighbor, multilayer perceptron, decision tree, and multiclass support vector machine—was analyzed with different window sizes to investigate classification performance. It was found that the multiclass support vector machine with a 4-s window size showed the best accuracy (88.1%) to classify four different subtasks of masonry work. The present study makes noteworthy contributions to the current body of knowledge. First, the study allows for automatic construction action recognition using a single wrist-worn sensor without interfering with workers’ ongoing work, which can be widely deployed to construction sites. The use of a single sensor also greatly reduces the burden to carry multiple sensors while also reducing computational cost and memory. Second, influences associated with the variability of movement between subject and experience group were examined; thus, a consideration of data acquisition that reflects the characteristics of workers’ actions is suggested.

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Data Availability Statement

Data generated or analyzed during the study are available from the corresponding author by request. Information about the Journal’s data-sharing policy can be found here: http://ascelibrary.org/doi/10.1061/(ASCE)CO.1943-7862.0001263.

Acknowledgments

The authors would like to acknowledge colleagues from the Ontario Masonry Training Centre at Conestoga College in Waterloo, Canada, for their considerable help in collecting data, as well as the contributions of Professor Carl T. Haas, Professor Eihab Abdel-Rahman, and Dr. Abdullatif Alwasel at the University of Waterloo for their collaboration in the data acquisition phase.

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Journal of Construction Engineering and Management
Volume 145Issue 1January 2019

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Received: Jan 22, 2018
Accepted: Jun 27, 2018
Published online: Oct 24, 2018
Published in print: Jan 1, 2019
Discussion open until: Mar 24, 2019

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JuHyeong Ryu [email protected]
Ph.D. Student, Dept. of Civil and Environmental Engineering, Univ. of Waterloo, 200 University Ave. West, Waterloo, ON, Canada N2M 0A9. Email: [email protected]
Assistant Professor, Dept. of Building and Real Estate, Hong Kong Polytechnic Univ., Hung Hom, Kowloon, Hong Kong. Email: [email protected]
Houtan Jebelli, A.M.ASCE [email protected]
Ph.D. Candidate, Tishman Construction Management Program, Dept. of Civil and Environmental Engineering, Univ. of Michigan, 2350 Hayward St., Suite 1148 G.G. Brown Bldg., Ann Arbor, MI 48109. Email: [email protected]
SangHyun Lee, M.ASCE [email protected]
Associate Professor, Tishman Construction Management Program, Dept. of Civil and Environmental Engineering, Univ. of Michigan, 2350 Hayward St., Suite 2340 G.G. Brown Bldg., Ann Arbor, MI 48109 (corresponding author). Email: [email protected]

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