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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 2 — Jan. 10, 2009
  • pp: 287–301

Cascaded adaptive-mask algorithm for twin-image removal and its application to digital holograms of ice crystals

Sebastian M. F. Raupach  »View Author Affiliations


Applied Optics, Vol. 48, Issue 2, pp. 287-301 (2009)
http://dx.doi.org/10.1364/AO.48.000287


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Abstract

An iterative Gerchberg–Saxton-type algorithm with a support constraint for twin-image removal from reconstructed Gabor inline holograms of single plane objects is described. It is applied to simulated holograms and to holograms of ice crystals recorded in the laboratory and in atmospheric clouds in situ. The algorithm is characterized by a distinction between object and background region and an iterative adaption of the object mask. Applying the algorithm to recorded inline holograms of atmospheric objects, the twin-image artifacts are removed successfully, for the first time allowing for a proper access to the in situ phase information on atmospheric ice crystals. It is also demonstrated that, after application of the algorithm, previously indiscernible internal object features can become visible for large Fresnel numbers.

© 2009 Optical Society of America

OCIS Codes
(010.2940) Atmospheric and oceanic optics : Ice crystal phenomena
(100.5070) Image processing : Phase retrieval
(010.1615) Atmospheric and oceanic optics : Clouds
(090.1995) Holography : Digital holography

ToC Category:
Holography

History
Original Manuscript: August 13, 2008
Revised Manuscript: November 4, 2008
Manuscript Accepted: November 5, 2008
Published: January 7, 2009

Citation
Sebastian M. F. Raupach, "Cascaded adaptive-mask algorithm for twin-image removal and its application to digital holograms of ice crystals," Appl. Opt. 48, 287-301 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-2-287

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