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Proceedings Paper

An infrared image non-uniformity correction algorithm based on pixels’ equivalent integral capacitance
Author(s): Shuanglei Zhang; Tao Wang; Chun Xu; FanSheng Chen
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Paper Abstract

In the infrared focal plane array (IRFPA) imaging system, the non-uniformity (NU) of IRFPA directly affects the quality of infrared images. Especially applying in the infrared weak small targets detection and tracking system, the impact of the spatial noise caused by the non-uniformity of IRFPA detector, often more serious than the temporal noise of imaging system. In order to effectively correct the non-uniformity of IRFPA detector, we firstly analyze main factors that cause the non-uniformity of IRFPA detector in imaging. Secondly, according to photoelectric conversion mechanism of IRFPA detector, and the analysis of the process of the target energy accumulation and transfer, we propose a calculation method of pixels' integral capacitance. Then according to the calculation results, we correct the original IR image preliminary. Finally, we validate this non-uniformity correction algorithm by processing IR images collected from actual IRFPA imaging system. Results show that the algorithm can effectively restrain the non-uniformity caused by the differences of the pixels' capacitance.

Paper Details

Date Published: 13 April 2015
PDF: 9 pages
Proc. SPIE 9522, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II, 95222V (13 April 2015); doi: 10.1117/12.2182553
Show Author Affiliations
Shuanglei Zhang, Shanghai Institute of Technical Physics (China)
Univ. of Chinese Academy of Sciences (China)
Tao Wang, Shanghai Institute of Technical Physics (China)
Univ. of Chinese Academy of Sciences (China)
Chun Xu, Shanghai Institute of Technical Physics (China)
FanSheng Chen, Shanghai Institute of Technical Physics of the Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 9522:
Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part II
Xiangwan Du; Jennifer Liu; Dianyuan Fan; Jialing Le; Yueguang Lv; Jianquan Yao; Weimin Bao; Lijun Wang, Editor(s)

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