Fast processing of quantitative phase profiles from off-axis interferograms for real-time applications

Pinhas Girshovitz, Natan T. Shaked

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We review new and efficient algorithms, lately presented by us, for rapid reconstruction of quantitative phase maps from off-axis digital interferograms. These algorithms improve the conventional Fourier-based algorithm by using the Fourier transforms and the phase unwrapping process more efficiently, and thus decrease the calculation complexity required for extracting the sample phase map from the recorded interferograms. Using the new algorithms, on a standard personal computer without using the graphic processing-unit programming or parallel computing, we were able to speed up the processing and reach frame rates of up to 45 frames per second for one megapixel off-axis interferograms. These capabilities allow real-time visualization, calculation and data extraction for dynamic samples and processes, inspected by off-axis digital holography. Specific applications include biological cell imaging without labeling and real-time nondestructive testing.

Original languageEnglish
Title of host publicationQuantitative Phase Imaging
EditorsYongKeun Park, Gabriel Popescu
PublisherSPIE
ISBN (Electronic)9781628414264
DOIs
StatePublished - 2015
Event1st Conference on Quantitative Phase Imaging, QPI 2015 - San Francisco, United States
Duration: 7 Feb 201510 Feb 2015

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume9336
ISSN (Print)1605-7422

Conference

Conference1st Conference on Quantitative Phase Imaging, QPI 2015
Country/TerritoryUnited States
CitySan Francisco
Period7/02/1510/02/15

Keywords

  • digital holography
  • interferometry
  • quantitative phase imaging
  • real-time imaging

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