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- W4321273193 abstract "Recently, we described a nonlinear joint transform processor for image deconvolution. 1 In this technique, both the smeared image and the smearing function are displayed side by side at the input plane of the optical processor. The Fourier phase appearing in the joint power spectrum is the exact Fourier phase of the original image. In the technique described in Ref. 1 , a hard clipping nonlinearity is used to threshold the joint Fourier spectrum to only two values, 1 and –1. The effect of the nonlinearity is to remove the distorted amplitude entirely and to restore the correct phase of the original signal. An amplitude mask averaged over an ensemble of images is used at the Fourier plane to provide the amplitude spectrum. An inverse Fourier transform of the average amplitude spectrum with the recovered correct phase information can yield the original image with considerably reduced distortion." @default.
- W4321273193 created "2023-02-18" @default.
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- W4321273193 date "1989-01-01" @default.
- W4321273193 modified "2023-10-18" @default.
- W4321273193 title "Image deconvolution using a logarithmic/exponential nonlinear joint transform processor" @default.
- W4321273193 cites W2011367605 @default.
- W4321273193 doi "https://doi.org/10.1364/oam.1989.thgg2" @default.
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