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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 17, Iss. 11 — Nov. 1, 2000
  • pp: 1962–1974

Noise-residue filtering of interferometric phase images

Giovanni Nico  »View Author Affiliations


JOSA A, Vol. 17, Issue 11, pp. 1962-1974 (2000)
http://dx.doi.org/10.1364/JOSAA.17.001962


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Abstract

The effect of noise-induced phase inconsistency on interferometric phase information content is studied. Phase inconsistencies, or residues, hinder a correct unwrapping of the phase signal. The probability of noise-induced phase inconsistencies is obtained as a function of the signal-to-noise ratio. Moreover, a two-dimensional noise-residue filter, intended to be applied as a preprocessing step before phase unwrapping, is proposed. The method is based on the observation that the noise creates adjacent phase inconsistencies mainly in interferometric phase images. A local analysis leads to a set of rules to be applied to reduce noise-induced phase inconsistencies. The filter performances are tested on noisy synthetic and real phase data.

© 2000 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.2980) Image processing : Image enhancement
(100.5070) Image processing : Phase retrieval

History
Original Manuscript: September 13, 1999
Revised Manuscript: July 5, 2000
Manuscript Accepted: July 5, 2000
Published: November 1, 2000

Citation
Giovanni Nico, "Noise-residue filtering of interferometric phase images," J. Opt. Soc. Am. A 17, 1962-1974 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-11-1962

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