15 October 2012 Wiener filtering in the process of dark current suppression
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Abstract
This paper is devoted to the dark current suppression in astronomical and multimedia images using the wiener filtering. We consider dark current represented by dark frame as a white impulsive noise generated in CCD sensor. The wiener filter is then set up accordance to measured second sample moments at CCD at chosen temperature range 268 K to 293 K. Furthermore, the temperature dependency of the second sample moments was fit by exponential regression. Hence, we are able to find sample moment and suppress dark current at given temperature. The measurement was done at SBIG ST8 camera.
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Jan Švihlík, Jan Švihlík, Frantisek Mojžíš, Frantisek Mojžíš, Karel Fliegel, Karel Fliegel, Jaromír Kukal, Jaromír Kukal, } "Wiener filtering in the process of dark current suppression", Proc. SPIE 8499, Applications of Digital Image Processing XXXV, 849925 (15 October 2012); doi: 10.1117/12.928652; https://doi.org/10.1117/12.928652
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