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Proceedings Paper

Wiener filtering in the process of dark current suppression
Author(s): Jan Švihlík; Frantisek Mojžíš; Karel Fliegel; Jaromír Kukal
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Paper 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.

Paper Details

Date Published: 15 October 2012
PDF: 6 pages
Proc. SPIE 8499, Applications of Digital Image Processing XXXV, 849925 (15 October 2012); doi: 10.1117/12.928652
Show Author Affiliations
Jan Švihlík, Institute of Chemical Technology (Czech Republic)
Frantisek Mojžíš, Institute of Chemical Technology (Czech Republic)
Karel Fliegel, Czech Technical Univ. in Prague (Czech Republic)
Jaromír Kukal, Czech Technical Univ. in Prague (Czech Republic)


Published in SPIE Proceedings Vol. 8499:
Applications of Digital Image Processing XXXV
Andrew G. Tescher, Editor(s)

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