Open AccessPhase extraction from three and more interferograms registered with different unknown wavefront tilts
Author(s) -
Oleg Soloviev,
Gleb Vdovin
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.003743
Subject(s) - wavefront , optics , interferometry , phase retrieval , phase (matter) , computer science , computer vision , spatial frequency , image restoration , artificial intelligence , image processing , image (mathematics) , physics , fourier transform , quantum mechanics
We propose phase retrieval from three or more interferograms corresponding to different tilts of an object wavefront. The algorithm uses the information contained in the interferogram differences to reduce the problem to phase shifting. Three interferograms is the minimum for restoring the phase over most of the image. Four or more interferograms are needed to restore the phase over the whole image. The method works with images including open and closed fringes in any combination.