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Optical system to compute intensity moments: design

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Abstract

A frequency-multiplexed coherent optical processor is described that can compute the intensity moments of a gray-scale input image. The space–bandwidth product and dynamic range of the system’s components are discussed. A major feature of the system is the ability to operate easily on its outputs to obtain bipolar moments and to correct for various component errors, nonlinearities, and nonuniformities.

© 1982 Optical Society of America

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