Reduction of nonstationary noise in telescope imagery using a support constraint

Details Reduction of nonstationary noise in telescope imagery using a support constraint Reduction of nonstationary noise in telescope imagery using a support constraint

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997oexpr...1..347t&link_type=abstract

Optics Express, vol. 1, Issue 11, p.347

Physics

Optics

3

Scientific paper

We demonstrate the use of image support constraints in a noise-reduction algorithm. Previous work has revealed serious limits to the use of support if image noise is wide-sense stationary in the frequency domain; we use simulation and numerical calculations to show these limits are removed for nonstationary noise generated by inverse-filtering adaptive optics image spectra. To quantify the noise reduction, we plot fractional noise removed by the proposed algorithm over a range of support sizes. We repeat this calculation for other noise sources with varying degrees of stationarity.

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