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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 27 — Sep. 20, 2010
  • pp: 5087–5094

Quantization analysis of speckle intensity measurements for phase retrieval

Anne Margarette S. Maallo, Percival F. Almoro, and Steen G. Hanson  »View Author Affiliations


Applied Optics, Vol. 49, Issue 27, pp. 5087-5094 (2010)
http://dx.doi.org/10.1364/AO.49.005087


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Abstract

Speckle intensity measurements utilized for phase retrieval (PR) are sequentially taken with a digital camera, which introduces quantization error that diminishes the signal quality. Influences of quantization on the speckle intensity distribution and PR are investigated numerically and experimentally in the static wavefront sensing setup. Results show that 3 to 4 bits are adequate to represent the speckle intensities and yield acceptable reconstructions at relatively fast convergence rates. Computer memory requirements may be eased down by 2.4 times if a 4 bit instead of an 8 bit camera is used. This may facilitate rapid speckle data acquisition for dynamic wavefront sensing.

© 2010 Optical Society of America

OCIS Codes
(010.7350) Atmospheric and oceanic optics : Wave-front sensing
(030.6140) Coherence and statistical optics : Speckle
(100.3010) Image processing : Image reconstruction techniques
(100.5070) Image processing : Phase retrieval
(110.2970) Imaging systems : Image detection systems
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Image Processing

History
Original Manuscript: July 10, 2009
Revised Manuscript: August 14, 2010
Manuscript Accepted: August 16, 2010
Published: September 14, 2010

Citation
Anne Margarette S. Maallo, Percival F. Almoro, and Steen G. Hanson, "Quantization analysis of speckle intensity measurements for phase retrieval," Appl. Opt. 49, 5087-5094 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-27-5087

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