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Digital speckle pattern interferometry: fringe retrieval for large in-plane deformations with digital speckle photography
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0003-4879-8261
1999 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 38, no 25, p. 5408-5412Article in journal (Refereed) Published
Abstract [en]

The compensation of large in-plane motions in digital speckle-pattern interferometry (DSPI) with the use of digital speckle photography (DSP) is demonstrated. Ordinary recordings of DSPI are recombined and analyzed with DSP. The DSP result is used to compensate for the bulk speckle motion prior to calculation of the phase map. This results in a high fringe contrast even for deformations of several speckle diameters. In addition, for the case of an in-plane deformation, it is shown that the absolute phase change in each pixel may be unwrapped by use of the DSP result as an initial guess. The principles of this method and experiments showing the in-plane rotation of a plate and the encounter of two rounded plates are presented

Place, publisher, year, edition, pages
1999. Vol. 38, no 25, p. 5408-5412
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-10439DOI: 10.1364/AO.38.005408ISI: 000082367900019Scopus ID: 2-s2.0-0032620568Local ID: 93d7ee80-ff20-11db-b19d-000ea68e967bOAI: oai:DiVA.org:ltu-10439DiVA, id: diva2:983384
Note

Godkänd; 1999; 20070510 (cira)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Sjödahl, Mikael

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CiteExportLink to record
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  • apa
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  • de-DE
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  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
  • html
  • text
  • asciidoc
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