Phase retrieval in digital holographic interferometry based on complex phasor and short time Fourier transform

Wen Chen, Quan Chenggen, Tay Cho Jui

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The determination of phase difference distributions is important in digital holographic interferometry. Many methods can be used to determine phase difference maps, such as Fourier transform, digital phase subtraction and phase-shifting. In recent years, some time-frequency analysis methods such as wavelet transform and short time Fourier transform (STFT) are developed to extract continuous phase maps without phase unwrapping in spatial and temporal domains. In this paper, STFT is investigated for the retrieval of phase difference in digital holographic interferometry. In addition, complex phasor (CP) method is employed in advance so as to make STFT available. An experiment is conducted to show the validity of the method based on STFT.
Original languageEnglish
Title of host publicationNinth International Symposium on Laser Metrology
Volume7155
DOIs
Publication statusPublished - 17 Dec 2008
Externally publishedYes
Event9th International Symposium on Laser Metrology - , Singapore
Duration: 30 Jun 20082 Jul 2008

Conference

Conference9th International Symposium on Laser Metrology
Country/TerritorySingapore
Period30/06/082/07/08

Keywords

  • Complex phasor
  • Digital holographic interferometry
  • Phase retrieval
  • Short time Fourier transform

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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