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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 10 — Oct. 1, 2009
  • pp: 2235–2242

Shape recovery of anisotropic metal surfaces

G. McGunnigle  »View Author Affiliations

JOSA A, Vol. 26, Issue 10, pp. 2235-2242 (2009)

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A method to recover the shape of metallic surfaces that have a directional microstructure is demonstrated. A simple model that shows how surface radiance varies with the azimuth of the light source is described and verified on real surfaces. The model predicts that if a light source is revolved around a flat facet then two peaks in radiance will be observed: tilting the facet against the grain of the material will cause the amplitudes of the peaks to change relative to one another; titling the facet with the grain will change the angles at which the peaks occur. It is shown that by measuring these effects, it is possible to estimate the slope of the facet within a limited range.

© 2009 Optical Society of America

OCIS Codes
(150.0150) Machine vision : Machine vision
(150.2945) Machine vision : Illumination design
(150.3045) Machine vision : Industrial optical metrology

ToC Category:
Machine Vision

Original Manuscript: June 18, 2009
Manuscript Accepted: August 10, 2009
Published: September 25, 2009

G. McGunnigle, "Shape recovery of anisotropic metal surfaces," J. Opt. Soc. Am. A 26, 2235-2242 (2009)

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