The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Algorithm of Optical Camera Communications Using Rolling-Shutter Effect

롤링셔터 효과를 이용한 광학 카메라통신 알고리즘

  • Lee, Jungho (Electronics Engineering Department, Kookmin University) ;
  • Kim, Nayeong (Electronics Engineering Department, Kookmin University) ;
  • Ju, MinChul (Electronics Engineering Department, Kookmin University) ;
  • Park, Youngil (Electronics Engineering Department, Kookmin University)
  • Received : 2016.01.20
  • Accepted : 2016.03.21
  • Published : 2016.04.30
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Abstract

Unlike conventional visible light communications (VLC) adopting photo detectors (PD), optical camera communications (OCC) employs cameras in detecting the transmitted data. Especially, the data rate of OCC can be enhanced by using the principle of rolling-shutter, which is the operating scheme of a CMOS image sensor. In this study, we consider a novel OCC system for high-speed real time video processing to transmit high speed data from LED and to acquire image utilizing rolling-shutter effect of CMOS image sensor. Also, we demonstrate the improved performance of proposed system using a test-bed.

광학 카메라 통신(OCC, Optical Camera Communication)은 기존의 광다이오드 기반 가시광통신(VLC)과는 다르게 카메라를 수신부로 사용하여 데이터를 수신한다. 특히, 카메라의 CMOS 이미지 센서의 셔터 동작방식인 롤링셔터의 원리를 이용하면 픽셀별로 다른 신호를 수신할 수 있으므로 데이터 속도를 개선할 수 있다. 본 연구에서는 카메라의 CMOS 이미지 센서를 사용하여 LED로부터 송신되는 고속 데이터의 이미지를 실시간으로 획득하고 이를 처리할 수 있는 알고리즘을 제안하였으며, 실험을 통해 성능을 검증하였다.

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References

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