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- W2090752675 abstract "We present a Wiener filter that is especially suitable for speckle and noise reduction in multilook synthetic aperture radar (SAR) imagery. The proposed filter is nonparametric, not being based on parametrized analytical models of signal statistics. Instead, the Wiener–Hopf equation is expressed entirely in terms of observed signal statistics, with no reference to the possibly unobservable pure signal and noise. This Wiener filter is simple in concept and implementation, exactly minimum mean-square error, and directly applicable to signal-dependent and multiplicative noise. We demonstrate the filtering of a genuine two-look SAR image and show how a nonnegatively constrained version of the filter substantially reduces ringing." @default.
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- W2090752675 date "2000-12-10" @default.
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- W2090752675 title "Noise and speckle reduction in synthetic aperture radar imagery by nonparametric Wiener filtering" @default.
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- W2090752675 doi "https://doi.org/10.1364/ao.39.006633" @default.
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