Optical image processor employing a nonlinear medium with active

Optical: systems and elements – Diffraction – Using fourier transform spatial filtering

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359559, 359 4, G02B 2746, G06K 900

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active

056754361

ABSTRACT:
An optical image processor includes a nonlinear active gain medium for recording an interference pattern that corresponds to the Fourier transform of an input image or the multiplicative product of the Fourier transforms of two respective input images.

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