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Proceedings Paper

The investigation of automatic exposure under extreme light
Author(s): Zefeng Wang; Lei Yang; Jijang Huang; Zhi Zhang; Qingsheng Xie; Yaohong Chen; Jiawen Liao; Zhaohui Zhang; Haifeng Zhang; Kaisheng Zhang
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Paper Abstract

For imaging equipments, exposure is one of the crucial factors for evaluating the quality of imaging. The correct method of exposure is the key to obtain high-quality image. Traditional calculation of exposure is slow in adaptation under extreme environment. In addition, the object of imaging under extreme light usually cannot achieve suitable gray level. To obtain accurate and effective control of automatic exposure under back light and front light environment, this article divides shoot scenes into different regions, applying the method of fuzzy logic to give each region a different weight number, and finally allowing it to correctly carry out automatic exposure. This method can manage imaging under special light conditions without being affected by the position of the main object. Experiments show that this method can effectively control automatic exposure under all kinds of environments.

Paper Details

Date Published: 19 February 2015
PDF: 5 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 94491W (19 February 2015); doi: 10.1117/12.2074827
Show Author Affiliations
Zefeng Wang, Xi’an Institute of Optics and Precision Mechanics (China)
Lei Yang, Xi’an Institute of Optics and Precision Mechanics (China)
Jijang Huang, Xi’an Institute of Optics and Precision Mechanics (China)
Zhi Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Qingsheng Xie, Xi’an Institute of Optics and Precision Mechanics (China)
Yaohong Chen, Xi’an Institute of Optics and Precision Mechanics (China)
Jiawen Liao, Xi’an Institute of Optics and Precision Mechanics (China)
Zhaohui Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Haifeng Zhang, Xi’an Institute of Optics and Precision Mechanics (China)
Kaisheng Zhang, Xi’an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)

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