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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 39, Iss. 27 — Sep. 20, 2000
  • pp: 4933–4941

Visibility depth improvement in active polarization imaging in scattering media

John G. Walker, Peter C. Y. Chang, and Keith I. Hopcraft  »View Author Affiliations


Applied Optics, Vol. 39, Issue 27, pp. 4933-4941 (2000)
http://dx.doi.org/10.1364/AO.39.004933


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Abstract

A simple image-subtraction technique for further enhancement of the visibility depth in polarized imaging of surfaces immersed in scattering media is proposed and assessed. The technique is based on active illumination with circular or linear polarization states and image detection in the original and the opposite, or orthogonal, states. Contrast enhancement is achieved by subtraction of a fraction of the image recorded in the original state from that recorded in the opposite state. Results demonstrating the effectiveness of this method, obtained with Monte Carlo techniques, show that the visibility depth can be increased by as much as a mean free path. The results obtained are compared with those obtained by use of two alternative methods.

© 2000 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(110.7050) Imaging systems : Turbid media
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry

History
Original Manuscript: November 18, 1999
Revised Manuscript: June 13, 2000
Published: September 20, 2000

Citation
John G. Walker, Peter C. Y. Chang, and Keith I. Hopcraft, "Visibility depth improvement in active polarization imaging in scattering media," Appl. Opt. 39, 4933-4941 (2000)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-39-27-4933

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