Abstract
We introduce and verify a single-channel time-division filtering low-light-level (LLL) color night vision system (3LCNV). The imaging scheme, comprising a tunable liquid crystal filter, three-generation GaAsP image intensifier, and CMOS camera, achieves LLL color imaging and ensures sensitivity. The image enhancement and color reconstruction algorithm flow suitable for LLL night vision combines overexposure-against white balance, color correction matrix (CCM) color correction, and color image denoising to improve color visibility and reduce color difference and image noise. The proposed night vision system extends the minimum working illuminance to and achieves natural and clear color LLL imaging, improving night-time observations.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Lei Liu, Xin Wang, and Jilu Chen
Appl. Opt. 49(3) 286-291 (2010)
Deyang Duan and Yunjie Xia
Opt. Express 29(4) 4978-4985 (2021)
Yuanhe Tang, Xiangang Cao, Hanchen Liu, G. G. Shepherd, Shulin Liu, Haiyang Gao, Xusan Yang, Yong Wu, and Shuiwei Wang
Appl. Opt. 51(12) 1968-1975 (2012)