Abstract

Recent work has demonstrated the effectiveness of coherent optical power spectrum (COPS) analysis for solving diverse problems in image evaluation. This paper extends previous work to include the prominent aspects of imagery contrast, as they pertain to COPS analysis. It is shown that the contrast effect on power spectra can and should be maximized or minimized, via different normalization techniques, depending on the particular class of image evaluation problems being addressed. In addition, the utility of using a COPS analyzer for contrast measurement of complex (or random) imagery is given.

© 1979 Optical Society of America

Scene power spectra: the moment as an image quality merit factor

Norman B. Nill
Appl. Opt. 15(11) 2846-2854 (1976)

Contrast effect on imagery power spectra: errata

N. B. Nill
Appl. Opt. 19(24) 4135-4135 (1980)

Speckle noise model for optical heterodyne line-scan imagery

Barry W. Lyons and Stanley R. Robinson
Appl. Opt. 18(6) 781-790 (1979)

Christiansen effect in IR spectra of soil-derived atmospheric dusts

Hugh R. Carlon
Appl. Opt. 18(21) 3610-3614 (1979)

Assessment of surface roughness by x-ray scattering and differential interference contrast microscopy

P. A. J. de Korte and R. Lainé
Appl. Opt. 18(2) 236-242 (1979)