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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

  • Vol. 17, Iss. 1 — Jan. 1, 2000
  • pp: 1–10

Enhancement of the point-spread function for imaging in scattering media by use of polarization-difference imaging

J. Scott Tyo  »View Author Affiliations


JOSA A, Vol. 17, Issue 1, pp. 1-10 (2000)
http://dx.doi.org/10.1364/JOSAA.17.000001


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Abstract

Polarization-difference (PD) imaging techniques have been demonstrated to improve the detectability of target features that are embedded in scattering media. The improved detectability occurs for both passive imaging in moderately scattering media (<5 optical depths) and active imaging in more highly scattering media. These improvements are relative to what is possible with equivalent polarization-blind, polarization-sum (PS) imaging under the same conditions. In this investigation, the point-spread functions (PSF’s) for passive PS and PD imaging in single-scattering media are studied analytically, and Monte Carlo simulations are used to study the PSF’s in single- and moderately multiple-scattering media. The results indicate that the PD PSF can be significantly narrower than the corresponding PS PSF, implying that better images of target features with high-spatial-frequency information can be obtained by using differential polarimetry in scattering media. Although the analysis was performed for passive imaging at moderate optical depths, the results lend insight into experiments that have been performed in more highly scattering media with active imaging methods to help mitigate the effects of multiple scattering.

© 2000 Optical Society of America

OCIS Codes
(070.2580) Fourier optics and signal processing : Paraxial wave optics
(110.0110) Imaging systems : Imaging systems
(110.7050) Imaging systems : Turbid media
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

History
Original Manuscript: October 26, 1998
Revised Manuscript: August 31, 1999
Manuscript Accepted: August 31, 1999
Published: January 1, 2000

Citation
J. Scott Tyo, "Enhancement of the point-spread function for imaging in scattering media by use of polarization-difference imaging," J. Opt. Soc. Am. A 17, 1-10 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-1-1


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