title: Comparison of thresholding schemes for visible light communication using mobile-phone image sensor.
abstract: Based on the rolling shutter effect of the complementary metal-oxide-semiconductor (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.
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Chi-Wai
authors.initials: CW
authors.lastname: Chow
authors.forename: Kevin
authors.initials: K
authors.lastname: Liang
authors.forename: Hung-Yu
authors.initials: HY
authors.lastname: Chen
authors.forename: Chin-Wei
authors.initials: CW
authors.lastname: Hsu
authors.forename: Chung-Yen
authors.initials: CY
authors.lastname: Chen
authors.forename: Shih-Hao
authors.initials: SH
authors.lastname: Chen