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High-accuracy off-axis wavefront reconstruction from noisy data: local least square with multiple adaptive windows

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Details

Original languageEnglish
Pages (from-to)25068-25083
Number of pages16
JournalOptics Express
Volume24
Issue number22
DOIs
Publication statusPublished - 31 Oct 2016
Publication typeA1 Journal article-refereed

Abstract

A variational algorithm to object wavefront reconstruction from noisy intensity observations is developed for the off-axis holography scenario with imaging in the acquisition plane. The algorithm is based on the local least square technique proposed in paper [J. Opt. Soc. Am. A, 21, 367 (2004)]. First, multiple reconstructions of the wavefront are produced for various size and various directional windows applied for localization of estimation. At the second stage, a special statistical rule is applied in order to select the best window size estimate for each pixel of the image and for each of the directional windows. At the third final stage the estimates of the different directions obtained for each pixel are aggregated in the final one. Simulation experiments and real data processing prove that the developed algorithm demonstrate the performance of the extraordinary quality and accuracy for both the phase and amplitude of the object wavefront. (C) 2016 Optical Society of America

Keywords

  • DIGITAL HOLOGRAPHY, PHASE, MICROSCOPY, TRANSFORM

Publication forum classification

Field of science, Statistics Finland