Abstract

A map transformation is a willful geometrical distortion of an image. Examples are rotation, shearing, and local stretching of the coordinate system. We describe an optical setup that performs a map transformation by spatial filtering with two phase-only filters. The system is able to perform in x- and y-linear distortions (e.g., shears) as well as certain x- and y-nonlinear distortions. The distorting filters introduce no aberrations. The object may radiate coherently, incoherently, or partially coherently. Some experimental results are presented.

© 1983 Optical Society of America

Nonsymmetric Fourier transforming with an anamorphic system

Tomasz Szoplik, Wojciech Kosek, and Carlos Ferreira
Appl. Opt. 23(6) 905-909 (1984)

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Carlos Ferreira, Antonio Moya, Tomasz Szoplik, and Juan Domingo
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Rotation-variant optical data processing using the 2-D nonsymmetric Fourier transform

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Appl. Opt. 25(2) 188-192 (1986)

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