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Proceedings Paper

An auto-gain control algorithm for EMCCD based on dynamic gray-level
Author(s): Yuehong Qian; Wenwen Zhang; Jingjing Liu; Qian Chen; Guohua Gu
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Paper 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 .

Paper Details

Date Published: 3 November 2014
PDF: 10 pages
Proc. SPIE 9273, Optoelectronic Imaging and Multimedia Technology III, 92732J (3 November 2014); doi: 10.1117/12.2070216
Show Author Affiliations
Yuehong Qian, Nanjing Univ. of Science and Technology (China)
Wenwen Zhang, Nanjing Univ. of Science and Technology (China)
Jingjing Liu, Nanjing Univ. of Science and Technology (China)
Qian Chen, Nanjing Univ. of Science and Technology (China)
Guohua Gu, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 9273:
Optoelectronic Imaging and Multimedia Technology III
Qionghai Dai; Tsutomu Shimura, Editor(s)

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