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QR Code Reading System
Citation:
Boe, T. AND P. Lemieux. QR Code Reading System. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-17/408, 2018.
Impact/Purpose:
The QR Code Reading System is a Python based script developed to recognize and record data and time associated with QR codes using web cameras.
Description:
The QR Code Reading System is a Python based script developed to recognize and record data and time associated with QR codes using web cameras. This code was originally developed to support timekeeping efforts during the Underground Transportation Restoration (UTR) Operational Technology Demonstration (OTD). Specifically, the system was used to track the movements of personnel within the contaminated structure, and to measure the amount of time it took personnel entering the facility to perform their duties. The system uses USB-interface webcams along with the open-source python-based software called Zbar [1]. The system was designed to read 8-1/2 x 11 inch laminated QR codes attached to personnel donned in PPE. QR stations (consisting of a laptop and webcam) were staged at various entry and exit points, and recorded each passerby’s name and time spotted. The resulting entry and exit times were later used to estimate entry durations.