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Proceedings Paper

Analysis of the general image quality equation
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Paper Abstract

The general image quality equation (GIQE) [Leachtenauer et al., Appl. Opt. 36, 8322-8328 (1997)] is an empirical formula for predicting the quality of imagery from a given incoherent optical system in terms of the National Imagery Interpretability Rating Scale (NIIRS). In some scenarios, the two versions of the GIQE (versions 3.0 and 4.0) yield significantly different NIIRS predictions. We compare visual image quality assessments for simulated imagery with GIQE predictions and analyze the physical basis for the GIQE terms in an effort to determine the proper coefficients for use with Wiener-filtered reconstructions of Nyquist and oversampled imagery in the absence of aberrations. Results indicate that GIQE 3.0 image quality predictions are more accurate than those from GIQE 4.0 in this scenario.

Paper Details

Date Published: 24 April 2008
PDF: 13 pages
Proc. SPIE 6978, Visual Information Processing XVII, 69780F (24 April 2008); doi: 10.1117/12.777718
Show Author Affiliations
Samuel T. Thurman, The Institute of Optics, Univ. of Rochester (United States)
James R. Fienup, The Institute of Optics, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 6978:
Visual Information Processing XVII
Zia-ur Rahman; Stephen E. Reichenbach; Mark Allen Neifeld, Editor(s)

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