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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 7 — Mar. 1, 2013
  • pp: C58–C63

Information capacity as a figure of merit for spectral imagers: the trade-off between resolution and coregistration

Torbjørn Skauli  »View Author Affiliations


Applied Optics, Vol. 52, Issue 7, pp. C58-C63 (2013)
http://dx.doi.org/10.1364/AO.52.000C58


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Abstract

The performance of spectral imagers is customarily described by several characteristics including resolution, noise, and coregistration. These must be traded off against each other in a practical imager design. This paper proposes a way to use the information capacity, in an information-theoretic sense, as a figure of merit for spectral imagers. In particular, it is shown how a metric [Opt. Express 20, 918 (2012)] can be used to incorporate coregistration performance in a definition of total noise, which in turn can be used in the definition of information capacity. As an example, it is shown how the information capacity can be used to optimize the pixel size in a simple case that can be treated analytically. Generally, the information capacity is attractive as a fundamental, application-independent figure of merit for spectral imager optimization and benchmarking.

© 2013 Optical Society of America

OCIS Codes
(220.4830) Optical design and fabrication : Systems design
(110.3055) Imaging systems : Information theoretical analysis
(110.4234) Imaging systems : Multispectral and hyperspectral imaging

History
Original Manuscript: October 16, 2012
Revised Manuscript: January 24, 2013
Manuscript Accepted: January 24, 2013
Published: February 11, 2013

Citation
Torbjørn Skauli, "Information capacity as a figure of merit for spectral imagers: the trade-off between resolution and coregistration," Appl. Opt. 52, C58-C63 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-7-C58

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