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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| JOSA A: OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 24, Iss. 12 — Dec. 1, 2007
  • pp: B25–B41

Optics InfoBase > JOSA A > Volume 24 > Issue 12 > Page B25

Task-specific information for imaging system analysis

Mark A. Neifeld, Amit Ashok, and Pawan K. Baheti

JOSA A, Vol. 24, Issue 12, pp. B25-B41        doi:10.1364/JOSAA.24.000B25

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  • OCIS Codes:
  • (110.3000) Imaging systems : Image quality assessment
  • (110.4280) Imaging systems : Noise in imaging systems
  • (200.3050) Optics in computing : Information processing

Citation
Mark A. Neifeld, Amit Ashok, and Pawan K. Baheti, "Task-specific information for imaging system analysis," J. Opt. Soc. Am. A 24, B25-B41 (2007)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-24-12-B25

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Abstract

Imagery is often used to accomplish some computational task. In such cases there are some aspects of the imagery that are relevant to the task and other aspects that are not. In order to quantify the task-specific quality of such imagery, we introduce the concept of task-specific information (TSI). A formal framework for the computation of TSI is described and is applied to three common tasks: target detection, classification, and localization. We demonstrate the utility of TSI as a metric for evaluating the performance of three imaging systems: ideal geometric, diffraction-limited, and projective. The TSI results obtained from the simulation study quantify the degradation in the task-specific performance with optical blur. We also demonstrate that projective imagers can provide higher TSI than conventional imagers at small signal-to-noise ratios.

© 2007 Optical Society of America

» View Full Text: Acrobat PDF (929 KB)

History
Original Manuscript: January 31, 2007
Manuscript Accepted: May 15, 2007
Published: September 26, 2007

References

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Author Affiliations

Mark A. Neifeld, Amit Ashok, Pawan K. Baheti

University of Arizona

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