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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 18 — Jun. 20, 2005
  • pp: 3827–3832

Improvement in visibility of an in-focus reconstructed image in digital holography by reduction of the influence of out-of-focus objects

O. Monnom, F. Dubois, C. Yourassowsky, and J. C. Legros  »View Author Affiliations


Applied Optics, Vol. 44, Issue 18, pp. 3827-3832 (2005)
http://dx.doi.org/10.1364/AO.44.003827


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Abstract

When a reconstruction is performed on a digital holographic image that contains small objects at different depths, diffraction that is due to out-of-focus objects disrupts the visibility of the nearby focused objects. We propose a method to substitute for focused object amplitudes other amplitudes that will reduce propagation diffraction effects when other depths are investigated. The replacement amplitudes are computed by use of an algorithm that reduces the highest spatial frequencies of the resultant image. The theoretical aspects of the method are presented, and results for simulated and experimental examples are shown.

© 2005 Optical Society of America

OCIS Codes
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(090.0090) Holography : Holography
(090.1760) Holography : Computer holography
(100.0100) Image processing : Image processing
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(180.0180) Microscopy : Microscopy

History
Original Manuscript: June 16, 2004
Revised Manuscript: January 6, 2005
Manuscript Accepted: January 7, 2005
Published: June 20, 2005

Citation
O. Monnom, F. Dubois, C. Yourassowsky, and J. C. Legros, "Improvement in visibility of an in-focus reconstructed image in digital holography by reduction of the influence of out-of-focus objects," Appl. Opt. 44, 3827-3832 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-18-3827

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