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Spatiotemporal approach for real-time absolute shape measurements by use of projected fringes
Luleå tekniska universitet.
2004 (English)In: Applied Optics, ISSN 1559-128X, E-ISSN 2155-3165, Vol. 43, no 15, p. 3018-3027Article in journal (Refereed) Published
Abstract [en]

A spatiotemporal approach for fast absolute shape measurements is formulated. In principle, the Takeda method is used in combination with the reduced temporal phase-unwrapping scheme to calculate the absolute phase. Three different measurements are performed: a flat surface, steps, and a curved beam with varying cross sections. The performance in standard deviation is improved, and the success rate is approximately the same as that obtained with a strict temporal solution for which a four-bucket phase algorithm is used. The multichannel approach is also used. Then only one static image is needed. It should therefore be possible to measure objects in motion

Place, publisher, year, edition, pages
2004. Vol. 43, no 15, p. 3018-3027
National Category
Applied Mechanics
Research subject
Experimental Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-6613DOI: 10.1364/AO.43.003018ISI: 000221528200003Scopus ID: 2-s2.0-2542640999Local ID: 4dbffb10-02ac-11dc-ad0a-000ea68e967bOAI: oai:DiVA.org:ltu-6613DiVA, id: diva2:979499
Note
Validerad; 2004; 20070515 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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