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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 8 — Apr. 21, 2014
  • pp: 9048–9062

Measuring isotropic subsurface light transport

Kathrin Happel, Edgar Dörsam, and Philipp Urban  »View Author Affiliations


Optics Express, Vol. 22, Issue 8, pp. 9048-9062 (2014)
http://dx.doi.org/10.1364/OE.22.009048


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Abstract

Subsurface light transport can affect the visual appearance of materials significantly. Measuring and modeling this phenomenon is crucial for accurately reproducing colors in printing or for rendering translucent objects on displays. In this paper, we propose an apparatus to measure subsurface light transport employing a reference material to cancel out adverse signals that may bias the results. In contrast to other approaches, the setup enables improved focusing on rough surfaces (e.g. uncoated paper). We derive a measurement equation that may be used to deduce the point spread function (PSF) of subsurface light transport. Main contributions are the usage of spectrally-narrowband exchangeable LEDs allowing spectrally-resolved measurements and an approach based on quadratic programming for reconstructing PSFs in the case of isotropic light transport.

© 2014 Optical Society of America

OCIS Codes
(110.4850) Imaging systems : Optical transfer functions
(290.5820) Scattering : Scattering measurements
(290.7050) Scattering : Turbid media

ToC Category:
Scattering

History
Original Manuscript: February 17, 2014
Revised Manuscript: March 28, 2014
Manuscript Accepted: March 28, 2014
Published: April 7, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Kathrin Happel, Edgar Dörsam, and Philipp Urban, "Measuring isotropic subsurface light transport," Opt. Express 22, 9048-9062 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-8-9048


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