6 October 2017 Modified two-point calibration algorithm for infrared focal plane arrays
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Abstract
This paper presents a modified two-point calibration algorithm with useful method of pixel offset correction coefficients update for infrared focal plane arrays (IRFPAs). The new approach to IRFPA response nonuniformity correction (NUC) consists in the use of pixel response change determined at the actual operating conditions in relation to the reference ones by means of shutter to compensate a pixel temporal drift. This approach permits to estimate a pixel offset efficiently and remove any optics shading effect in the corrected output image as well. Moreover, the proposed NUC algorithm is easy to implement by hardware too. To show efficiency of the modified two-point calibration algorithm some test results for microbolometer IRFPA are presented.
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Tomasz Orżanowski, Tomasz Orżanowski, } "Modified two-point calibration algorithm for infrared focal plane arrays", Proc. SPIE 10433, Electro-Optical and Infrared Systems: Technology and Applications XIV, 104330J (6 October 2017); doi: 10.1117/12.2278629; https://doi.org/10.1117/12.2278629
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