Linear CCD pixel-response nonuniformity correction algorithm

Ning Lei; Chunmei Li; Kun Wang; Tao Li

doi:10.1117/12.977643

15 October 2012 Linear CCD pixel-response nonuniformity correction algorithm

Ning Lei, Chunmei Li, Kun Wang, Tao Li

Proceedings Volume 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy; 84192B (2012) https://doi.org/10.1117/12.977643
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

The non-uniformity correction of linear Charge-Coupled Devices (CCD) remote camera is essential to gain high quality image. In this paper, a novel Pixel-Response Non-Uniformity (PRNU) correction algorithm is proposed. The disadvantages of traditional correction algorithm, which is the output of dark pixel does not really reflect the current dark current when CCD is partial saturation, is overcome. Secondly, the flat fielding algorithm is improved. The correction algorithm is divided into two independent components based on the mechanism of PRNU, which are dark current noise and its non-uniformity and photoelectricity non-uniformity. Finally, the digital gain function is introduced. The experimental results show that the proposed algorithm can eliminate the image degradation caused by dark current noise and its non-uniformity and photoelectricity non-uniformity. The performance of imaging system is improved.

Citation Download Citation

Ning Lei, Chunmei Li, Kun Wang, and Tao Li "Linear CCD pixel-response nonuniformity correction algorithm", Proc. SPIE 8419, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing, Imaging, and Solar Energy, 84192B (15 October 2012); https://doi.org/10.1117/12.977643

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