Citation

Zeng S. Int. J. Occup. Safety Ergonomics 2020; ePub(ePub): ePub.

Copyright

(Copyright © 2020, Centralny Instytut Ochrony Pracy - Państwowy Instytut Badawczy, Publisher Informa - Taylor and Francis Group)

DOI

10.1080/10803548.2020.1817651

PMID

32873184

Abstract

Taxicab security cameras are widely used to deter crimes against taxicab-drivers in two-row-seating taxicabs. Some of these cameras have difficulty for use in three-row-seating taxicabs due to increased distance between the camera and the third-row seats. This project tested five sample taxicab security cameras with different image-sensor pixel counts to determine their utility for three-row-seating taxicabs. The cameras videotaped a normalized camera resolution test chart mounted in the third-row seat of a simulated three-row-seating taxicab in both daylight and dark (with infrared radiation) conditions. The camera resolution of each camera was measured and compared with the resolution threshold for customer facial identification. A dome-mounted camera with a standard-definition image-sensor is suggested as an effective camera in sustaining high camera resolution with small data file size for facial identification in the third-row seats. The image-sensors with at least 1280×720 pixels are suggested for windshield-mounted cameras in three-row-seating taxicabs for facial identification.

Language: en

Keywords

Camera resolution; Computer facial recognition; Facial identification; Taxicab security cameras; Taxicab-driver homicide; Three-row-seating taxicabs