Visible Light Communication Using Advertisement-Light-Board and Rolling-Shutter-Effect based CMOS Mobile-Phone Camera

Shiu, Ruei-Jie; Liu, Yen-Chun; Chow, Chi‐Wai; Wei, Liang-Yu; Hsu, Yung-Chang; Hsu, Chin-Wei; Yeh, Chien‐Hung; Liao, Xin-Lan; Lin, Kon‐Ping; Wang, Yichang; Chen, Yiyuan

doi:10.1109/oecc.2018.8730127

Cited by 1 publication

(1 citation statement)

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“…Although the frequency of the source is far above the frame rate of the camera, the signals can still be decoded due to the rolling shutter effect. CMOS sensors [46] that use a rolling shutter mechanism expose one or more columns at a time and scan one column at a time. When an OOK-amplified light source shines on the camera, In this study, we are assuming that two or more light sources emit signals (ideally at least four).…”

Section: Visible Light Communication System Design For Indoor Positio...mentioning

confidence: 99%

Mobile Application for Visible Light Communication Systems: An Approach for Indoor Positioning

Nguyen,

Nguyen

2024

Photonics

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We explore the use of smartphones to decode data transmitted from LEDs to smartphone cameras in visible light communication (VLC) applied to indoor positioning applications. The LEDs—modified to enable rapid on-off keying—transmit identification codes or optically encoded location data imperceptible to human perception. Equipped with a camera, the smartphone employs a single framed image to detect the presence of the luminaires in the image, decode their transmitted identifiers or locations, and determine the smartphone’s position and orientation relative to the luminaires. The camera captures and processes images continuously. The following fundamental issues are addressed in this research: (i) analyzing the camera parameters on smartphones that affect data decoding results; (ii) exploiting the rolling shutter effect of the CMOS image sensor to receive multiple bits of data encoded in the optical communication line with a single frame shot; (iii) advancing research in developing algorithms to process data from multiple LEDs simultaneously. We conduct experiments to evaluate and analyze feasibility, as well as the challenges of the design, through scenarios varying in distance, transmission frequency, and data length.

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Section: Visible Light Communication System Design For Indoor Positio...mentioning

confidence: 99%

Mobile Application for Visible Light Communication Systems: An Approach for Indoor Positioning

Nguyen,

Nguyen

2024

Photonics

View full text Add to dashboard Cite

show abstract

Visible Light Communication Using Advertisement-Light-Board and Rolling-Shutter-Effect based CMOS Mobile-Phone Camera

Cited by 1 publication

References 5 publications

Mobile Application for Visible Light Communication Systems: An Approach for Indoor Positioning

Mobile Application for Visible Light Communication Systems: An Approach for Indoor Positioning

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