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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: Franco Gori
  • Vol. 27, Iss. 5 — May. 1, 2010
  • pp: 1040–1045

Anisotropic reflectance from turbid media. II. Measurements

Magnus Neuman and Per Edström  »View Author Affiliations


JOSA A, Vol. 27, Issue 5, pp. 1040-1045 (2010)
http://dx.doi.org/10.1364/JOSAA.27.001040


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Abstract

The anisotropic reflectance from turbid media predicted using the radiative transfer based DORT2002 model is experimentally verified through goniophotometric measurements. A set of paper samples with varying amounts of dye and thickness is prepared, and their angle resolved reflectance is measured. An alleged perfect diffusor is also included. The corresponding simulations are performed. A complete agreement between the measurements and model predictions is seen regarding the characteristics of the anisotropy. They show that relatively more light is reflected at large polar angles when the absorption or illumination angle is increased or when the medium thickness is decreased. This is due to the relative amount of near-surface bulk scattering increasing in these cases. This affects the application of the Kubelka–Munk model as well as standards for reflectance measurements and calibration routines.

© 2010 Optical Society of America

OCIS Codes
(290.4210) Scattering : Multiple scattering
(290.5820) Scattering : Scattering measurements
(290.7050) Scattering : Turbid media
(290.1483) Scattering : BSDF, BRDF, and BTDF

ToC Category:
Scattering

History
Original Manuscript: October 19, 2009
Revised Manuscript: February 16, 2010
Manuscript Accepted: February 22, 2010
Published: April 13, 2010

Virtual Issues
Vol. 5, Iss. 9 Virtual Journal for Biomedical Optics

Citation
Magnus Neuman and Per Edström, "Anisotropic reflectance from turbid media. II. Measurements," J. Opt. Soc. Am. A 27, 1040-1045 (2010)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-27-5-1040

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