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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 25, Iss. 8 — Aug. 1, 2008
  • pp: 2055–2065

Predicting range performance of sampled imagers by treating aliased signal as target-dependent noise

Richard H. Vollmerhausen, Ronald G. Driggers, and David L. Wilson  »View Author Affiliations


JOSA A, Vol. 25, Issue 8, pp. 2055-2065 (2008)
http://dx.doi.org/10.1364/JOSAA.25.002055


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Abstract

This paper presents a new theory to predict the impact of sampling on target acquisition. The aliased signal that results from sampling is treated as noise. The aliased signal is different from detector noise in two ways. First, aliasing disappears as the target contrast decreases. Second, the image corruption due to aliasing gets worse with increased range. This is because sampling is constant in angle space, and targets become poorly sampled as range increases. The theory is presented, along with the results of three experiments. The match between model and experiment is excellent.

© 2008 Optical Society of America

OCIS Codes
(110.3000) Imaging systems : Image quality assessment
(110.3080) Imaging systems : Infrared imaging
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Imaging Systems

History
Original Manuscript: February 4, 2008
Revised Manuscript: June 13, 2008
Manuscript Accepted: June 19, 2008
Published: July 18, 2008

Citation
Richard H. Vollmerhausen, Ronald G. Driggers, and David L. Wilson, "Predicting range performance of sampled imagers by treating aliased signal as target-dependent noise," J. Opt. Soc. Am. A 25, 2055-2065 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-8-2055


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References

  1. R. G. Driggers, R. H. Vollmerhausen, and B. O'Kane, “Character recognition as a function of spurious response,” J. Opt. Soc. Am. A 16, 1026-1033 (1999). [CrossRef]
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