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Applied Optics

Applied Optics


  • Vol. 39, Iss. 4 — Feb. 1, 2000
  • pp: 502–508

Improved regularized phase-tracking technique for the processing of squared-grating deflectograms

Jesús Villa, Juan Antonio Quiroga, and Manuel Servín  »View Author Affiliations

Applied Optics, Vol. 39, Issue 4, pp. 502-508 (2000)

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We propose a robust procedure based on the regularized phase-tracking (RPT) technique to demodulate squared-grating deflectograms. The use of squared gratings, already reported, lets us multiplex the information of the deflections in two orthogonal directions in a single image, thus avoiding the necessity of rotating the gratings. The good noise-rejection characteristics of the RPT technique are improved by use of a quasi-Newton optimization algorithm and a quality-map-based algorithm for the crystal-growing process.

© 2000 Optical Society of America

OCIS Codes
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(120.2650) Instrumentation, measurement, and metrology : Fringe analysis
(120.4120) Instrumentation, measurement, and metrology : Moire' techniques
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices

Original Manuscript: May 7, 1999
Revised Manuscript: September 22, 1999
Published: February 1, 2000

Jesús Villa, Juan Antonio Quiroga, and Manuel Servín, "Improved regularized phase-tracking technique for the processing of squared-grating deflectograms," Appl. Opt. 39, 502-508 (2000)

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