An auto-gain control algorithm for EMCCD based on dynamic gray-level

Yuehong Qian; Wenwen Zhang; Jingjing Liu; Qian Chen; Guohua Gu

doi:10.1117/12.2070216

3 November 2014 An auto-gain control algorithm for EMCCD based on dynamic gray-level

Yuehong Qian, Wenwen Zhang, Jingjing Liu, Qian Chen, Guohua Gu

Proceedings Volume 9273, Optoelectronic Imaging and Multimedia Technology III; 92732J (2014) https://doi.org/10.1117/12.2070216
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

According to the adjustability of the gain multiplier of Electron Multiplying CCD , an image gain adjustment method based on dynamic gray-level is proposed. Compared to a fixed value adjustment algorithm, the automatic gain algorithm here is more adaptive,even in low-light conditions , it can achieve better gain values. Experimental results show that the automatic gain algorithm which combines mean values with the dynamic range of histograms meets the requirements. Whether it is during the day or at night , the brightness of image can quickly converge to the optimum range of gray histogram distribution, gray-level dynamic range is also accounted for more than 90% . Judging from the images obtained: the brightness is moderate, details are clear .

Citation Download Citation

Yuehong Qian, Wenwen Zhang, Jingjing Liu, Qian Chen, and Guohua Gu "An auto-gain control algorithm for EMCCD based on dynamic gray-level", Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92732J (3 November 2014); https://doi.org/10.1117/12.2070216

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