Analog Optical Computing: Fourier Synthesis Utilizing Amplitude andâor Phase Filters

Analog Optical Computing: Fourier Synthesis Utilizing Amplitude andâor Phase Filters

Editor(s): George O. Reynolds; John B. DeVelis; George B. Parrent Jr.; Brian J. Thompson

Published: 1989

https://doi.org/10.1117/3.2303.ch31

Abstract

In many spatial filtering systems, inverse filters, which can be real, purely imaginary, or complex, are used to remove image degradations. These systems assume that a degraded image was created in a linear and stationary (incoherent) imaging system having a known or measurable impulse response.