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Optics Express

Optics Express

  • Editor: J. H. Eberly
  • Vol. 8, Iss. 6 — Mar. 12, 2001
  • pp: 296–301

Shapes and scattering properties of large irregular bodies from photometric data

Mikko Kaasalainen, Karri Muinonen, and Teemu Laakso  »View Author Affiliations

Optics Express, Vol. 8, Issue 6, pp. 296-301 (2001)

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The macroscopic shapes, rotational states, and scattering parameters of atmosphereless bodies can be deduced from photometric measurements of total brightnesses in different viewing/illumination geometries. The problem is solved with nonlinear optimization techniques; the use of positive definite quantities effectively removes the apparent ill-posedness of the problem. Since the parameters of scattering laws such as the Hapke model cannot be unambiguously determined from photometric data only, we propose a simple empirical scattering model for the purpose. Our methods can obtain convex hull-like shapes even for strongly nonconvex objects; a conception of the major concavities can also be formed.

© Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(120.5240) Instrumentation, measurement, and metrology : Photometry
(290.1350) Scattering : Backscattering
(290.5880) Scattering : Scattering, rough surfaces
(350.1270) Other areas of optics : Astronomy and astrophysics

ToC Category:
Focus Issue: Light scattering by non-spherical particles

Original Manuscript: January 17, 2001
Published: March 12, 2001

Mikko Kaasalainen, Karri Muinonen, and Teemu Laakso, "Shapes and scattering properties of large irregular bodies from photometric data," Opt. Express 8, 296-301 (2001)

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