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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 5 — Mar. 1, 2013
  • pp: 619–621

Random resampling masks: a non-Bayesian one-shot strategy for noise reduction in digital holography

V. Bianco, M. Paturzo, P. Memmolo, A. Finizio, P. Ferraro, and B. Javidi  »View Author Affiliations


Optics Letters, Vol. 38, Issue 5, pp. 619-621 (2013)
http://dx.doi.org/10.1364/OL.38.000619


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Abstract

Holographic imaging may become severely degraded by a mixture of speckle and incoherent additive noise. Bayesian approaches reduce the incoherent noise, but prior information is needed on the noise statistics. With no prior knowledge, one-shot reduction of noise is a highly desirable goal, as the recording process is simplified and made faster. Indeed, neither multiple acquisitions nor a complex setup are needed. So far, this result has been achieved at the cost of a deterministic resolution loss. Here we propose a fast non-Bayesian denoising method that avoids this trade-off by means of a numerical synthesis of a moving diffuser. In this way, only one single hologram is required as multiple uncorrelated reconstructions are provided by random complementary resampling masks. Experiments show a significant incoherent noise reduction, close to the theoretical improvement bound, resulting in image-contrast improvement. At the same time, we preserve the resolution of the unprocessed image.

© 2013 Optical Society of America

OCIS Codes
(100.2980) Image processing : Image enhancement
(110.4280) Imaging systems : Noise in imaging systems
(090.1995) Holography : Digital holography

ToC Category:
Holography

History
Original Manuscript: December 6, 2012
Revised Manuscript: January 23, 2013
Manuscript Accepted: January 23, 2013
Published: February 21, 2013

Citation
V. Bianco, M. Paturzo, P. Memmolo, A. Finizio, P. Ferraro, and B. Javidi, "Random resampling masks: a non-Bayesian one-shot strategy for noise reduction in digital holography," Opt. Lett. 38, 619-621 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-5-619


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