Abstract

In cases in which there are zeros in the optical transfer function, display of the absolute value of the Fourier transform of a blurred image may allow these zeros to be seen, if the noise level is low enough. This can be used to identify the optical transfer function, provided that it is one of the suitable common simple forms, or to determine certain parameters of the optical transfer function if its form is known. Examples of the use of this technique in the generation of restoring filters for image enhancement are presented.

© 1973 Optical Society of America

Source reconstruction from the modulus of the correlation function: a practical approach to the phase problem of optical coherence theory*

D. Kohler and L. Mandel
J. Opt. Soc. Am. 63(2) 126-134 (1973)

Point-source position estimation in under-sampled optical systems*

S. J. Kishner and T. W. Barnard
J. Opt. Soc. Am. 63(12) 1578-1583 (1973)

Intensity interferometry in the spatial domain*

Paul H. Deitz and F. Paul Carlson
J. Opt. Soc. Am. 63(3) 274-280 (1973)

Increasing the dyanamic range of coherent optical filters by means of modulating gratings*

J. W. Goodman and H. B. Strübin
J. Opt. Soc. Am. 63(1) 50-58 (1973)

Space-variant system analysis of image motion*

Alexander A. Sawchuk
J. Opt. Soc. Am. 63(9) 1052-1063 (1973)