Comparison of thresholding schemes for visible light communication using mobile-phone image sensor

Yang Liu, Chi Wai Chow, Kevin Liang, Hung Yu Chen, Chin Wei Hsu, Chung Yen Chen, Shih Hao Chen

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Based on the rolling shutter effect of the complementary metaloxidesemiconductor (CMOS) image sensor, bright and dark fringes can be observed in each received frame. By demodulating the bright and dark fringes, the visible light communication (VLC) data logic can be retrieved. However, demodulating the bright and dark fringes is challenging as there is a high data fluctuation and large extinction ratio (ER) variation in each frame due. Hence proper thresholding scheme is needed. In this work, we propose and compare experimentally three thresholding schemes; including third-order polynomial curve fitting, iterative scheme and quick adaptive scheme. The evaluation of these three thresholding schemes is performed.

Original languageEnglish
Pages (from-to)1973-1978
Number of pages6
JournalOptics Express
Volume24
Issue number3
DOIs
StatePublished - 8 Feb 2016

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    Liu, Y., Chow, C. W., Liang, K., Chen, H. Y., Hsu, C. W., Chen, C. Y., & Chen, S. H. (2016). Comparison of thresholding schemes for visible light communication using mobile-phone image sensor. Optics Express, 24(3), 1973-1978. https://doi.org/10.1364/OE.24.001973