Fringe shifting and optical digital fringe multiplication in moire topography

Tomas Roessler; Miroslav Hrabovsky; Jiri Keprt; Ludek Bartonek

doi:10.1117/12.475878

22 July 2002 Fringe shifting and optical digital fringe multiplication in moire topography

Tomas Roessler, Miroslav Hrabovsky, Jiri Keprt, Ludek Bartonek

Proceedings Volume 4888, First International Workshop on Classical and Quantum Interference; (2002) https://doi.org/10.1117/12.475878
Event: First International Workshop of Research Center for Optics on Classical and Quantum Interference, 2001, Olomouc, Czech Republic

Abstract

The article is dealing with the measurement of three-dimensional shapes of objects. Such measurement is called the topography. The one of moire methods — the projection moire topography —is used. For improvement of measurement quality some methods are introduced. At first it is the washing-up method which deletes the linear background. At second the fringe-shifting method is described used for increasing of data quantity. And finally the optical/digital fringe multiplication is mentioned as a method for increasing the accuracy ofmeasurement. The topography is illustrated on the example ofmeasurement ofpump blade including its theory, experimental set-up and results.

Citation Download Citation

Tomas Roessler, Miroslav Hrabovsky, Jiri Keprt, and Ludek Bartonek "Fringe shifting and optical digital fringe multiplication in moire topography", Proc. SPIE 4888, First International Workshop on Classical and Quantum Interference, (22 July 2002); https://doi.org/10.1117/12.475878

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