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Proceedings Paper

Solving the out-of-focus OTF reduction using a phase only filter and fuzzy logic reasoning
Author(s): Zeev Zalevsky; Eran Gur; Dina Elkind; David Mendlovic
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Paper Abstract

The problem of frequency response degradation while stepping out of the focal plane of an optical setup is well known. In this work the authors suggest a novel method for decreasing this effect. The main principle is to assign different weights to different out-of-focus planes and design a phase only filter for each plane, then combining the filters with respect to the weights. The weights of the different planes increase as the distance from the focal plane increases and the exact weights are determined by a fuzzy logic inference engine. The fuzzy logic tool grades the different weighing sets according to the average width of the optical transfer functions and according to the deviation between function's widths.

Paper Details

Date Published: 19 November 2003
PDF: 2 pages
Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.531040
Show Author Affiliations
Zeev Zalevsky, Tel-Aviv Univ. (Israel)
Eran Gur, Tel Aviv Univ. (Israel)
Dina Elkind, Tel-Aviv Univ. (Israel)
David Mendlovic, Tel-Aviv Univ. (Israel)


Published in SPIE Proceedings Vol. 4829:
19th Congress of the International Commission for Optics: Optics for the Quality of Life
Giancarlo C. Righini; Anna Consortini, Editor(s)

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