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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 20, Iss. 2 — Jan. 15, 1981
  • pp: 312–319

Detection of gratings and small features in speckle imagery

Vijaya N. Korwar and John R. Pierce  »View Author Affiliations


Applied Optics, Vol. 20, Issue 2, pp. 312-319 (1981)
http://dx.doi.org/10.1364/AO.20.000312


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Abstract

The extent of picture degradation of speckle, in particular in synthetic aperture radar pictures, has been investigated in the cases where an observer has to detect (a) a small feature immersed in a darker background, and (b) a square wave grating. In each case, a theoretical model is developed for the observer’s detection mechanism, and the probability of correct decision is related to relevant picture parameters such as contrast, looks per pixel, and size. These calculations are verified by psychophysical experiments using computer-simulated pictures. Detectability of gratings as a criterion for characterizing picture quality is shown to be far inferior to feature detectability.

© 1981 Optical Society of America

History
Original Manuscript: June 24, 1980
Published: January 15, 1981

Citation
Vijaya N. Korwar and John R. Pierce, "Detection of gratings and small features in speckle imagery," Appl. Opt. 20, 312-319 (1981)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-2-312

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