Blind and flash pixels detection and compensation algorithm for infrared detector based on image sequence

Hao Yang; Jin-Long Huang; Nian Pan; Si-Jie Kong; Dan Jia; Tian-Yue Ran; Xiao-Peng Liang; Wen-Bo Jia; Jin-Feng Liao; Yi Cui

doi:10.1117/12.2646151

23 January 2023 Blind and flash pixels detection and compensation algorithm for infrared detector based on image sequence

Hao Yang, Jin-Long Huang, Nian Pan, Si-Jie Kong, Dan Jia, Tian-Yue Ran, Xiao-Peng Liang, Wen-Bo Jia, Jin-Feng Liao, Yi Cui

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Proceedings Volume 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology; 125570E (2023) https://doi.org/10.1117/12.2646151
Event: Applied Optics and Photonics China 2022 (AOPC2022), 2022, Beijing, China

Abstract

The blind pixels and the flash pixels of infrared detector, which are easily to be detected as the target, increase the false alarm rate. An algorithm about the detection of blind pixel and flash pixel is proposed in this paper. This method is based on the characteristics that the gray values of the blind pixels in the sequence images are basically unchanged, there is a jump in the gray values of the flash pixels, and there are obvious differences between blind pixels and neighboring pixels in spatial domain, the method of joint processing in space-time domain is used to detect blind pixels. Compared with the traditional algorithm, this method effectively avoids the problem of target signal suppression in blind flash pixel detection. The experiment of a 0.3m telescope shows that this algorithm can effectively eliminate blind flash pixels in infrared images. In the experiment of dim target detection, combined with multi-frame energy accumulation algorithm, this algorithm has the ability to detect targets with signal to noise ratio (SNR) ≤ 1 and the brightness of 10.8mVisdetected, which lays a technical foundation for the follow-up ground-based optical telescope to carry out full-time detection.

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Hao Yang, Jin-Long Huang, Nian Pan, Si-Jie Kong, Dan Jia, Tian-Yue Ran, Xiao-Peng Liang, Wen-Bo Jia, Jin-Feng Liao, and Yi Cui "Blind and flash pixels detection and compensation algorithm for infrared detector based on image sequence", Proc. SPIE 12557, AOPC 2022: Optical Sensing, Imaging, and Display Technology, 125570E (23 January 2023); https://doi.org/10.1117/12.2646151

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KEYWORDS

Detection and tracking algorithms

Target detection

Infrared detectors

Infrared radiation

Infrared imaging

Signal detection

Signal to noise ratio

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