Sensors (Apr 2024)

Optical Camera Communications in Healthcare: A Wearable LED Transmitter Evaluation during Indoor Physical Exercise

  • Eleni Niarchou,
  • Vicente Matus,
  • Jose Rabadan,
  • Victor Guerra,
  • Rafael Perez-Jimenez

DOI
https://doi.org/10.3390/s24092766
Journal volume & issue
Vol. 24, no. 9
p. 2766

Abstract

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This paper presents an experimental evaluation of a wearable light-emitting diode (LED) transmitter in an optical camera communications (OCC) system. The evaluation is conducted under conditions of controlled user movement during indoor physical exercise, encompassing both mild and intense exercise scenarios. We introduce an image processing algorithm designed to identify a template signal transmitted by the LED and detected within the image. To enhance this process, we utilize the dynamics of controlled exercise-induced motion to limit the tracking process to a smaller region within the image. We demonstrate the feasibility of detecting the transmitting source within the frames, and thus limit the tracking process to a smaller region within the image, achieving an reduction of 87.3% for mild exercise and 79.0% for intense exercise.

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