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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 tekniska universitet, Institutionen för teknikvetenskap och matematik, Strömningslära och experimentell mekanik.ORCID-id: 0000-0003-4879-8261
1999 (engelsk)Inngår i: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 38, nr 25, s. 5408-5412Artikkel i tidsskrift (Fagfellevurdert) 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

sted, utgiver, år, opplag, sider
1999. Vol. 38, nr 25, s. 5408-5412
HSV kategori
Forskningsprogram
Experimentell mekanik
Identifikatorer
URN: urn:nbn:se:ltu:diva-10439DOI: 10.1364/AO.38.005408ISI: 000082367900019Scopus ID: 2-s2.0-0032620568Lokal ID: 93d7ee80-ff20-11db-b19d-000ea68e967bOAI: oai:DiVA.org:ltu-10439DiVA, id: diva2:983384
Merknad

Godkänd; 1999; 20070510 (cira)

Tilgjengelig fra: 2016-09-29 Laget: 2016-09-29 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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