Improved accuracy phase retrieval in spatial phase-shifting interferometry
Authors: Vannoni M., Melozzi M., Barilli M., Sordini A., Molesini G.
Autors Affiliation: CNR-Istituto Nazionale di Ottica, Largo E. Fermi 6, Firenze 50125, Italy;
Selex Galileo S.p.A, Via A. Einstein 35, Campi Bisenzio 50013, Italy
Abstract: Algorithms for phase retrieval in spatial phase-shifting interferometry are examined. It is noticed that the classical Carre technique based on four neighbor pixels may introduce shaped phase residuals that affect the accuracy of the reconstruction. A variant of the technique is proposed, taking into consideration five pixels and steering the phase retrieval algorithm to the appropriate subset so that residuals are free of underlying errors. Computational results are presented illustrating the approach and demonstrating the accuracy improvement in a case study. (C) 2011 Elsevier B.V. All rights reserved.
Journal/Review: OPTICS COMMUNICATIONS (PRINT)
Volume: 285 (5) Pages from: 517 to: 520
KeyWords: Accuracy Improvement; Computational results; Phase retrieval; Phase retrieval algorithm; Spatial phase-shifting, Algorithms; Optical testing; Pixels, InterferometryDOI: 10.1016/j.optcom.2011.11.016Citations: 4data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-10-13References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here