Comparative study of fringes generation in two-spacing phase-shifting profilometry

Jana Harizanova; Angel Kolev

doi:10.1117/12.677288

9 June 2006 Comparative study of fringes generation in two-spacing phase-shifting profilometry

Jana Harizanova, Angel Kolev

Proceedings Volume 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information; 625223 (2006) https://doi.org/10.1117/12.677288
Event: Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 2005, Varna, Bulgaria

Abstract

A two-spacing phase-shifting techniques for three-dimensional shape measurement based on digital fringe projection is presented. Combination of phase-shifting method with computer generated fringe patterns with a sinusoidal intensity profile allows precise measurement in real time operating mode. The two-spacing technique allows absolute coordinate estimation of the investigated specimen. The theoretical background, experimental results as well as comparison with traditional laser phase-shifting interferometry are discussed. The obtained outcomes successfully display the applicability of this technique for surface profile measurement. The proposed technique is especially useful for remote, non-destructive in-situ inspection of real objects.

Citation Download Citation

Jana Harizanova and Angel Kolev "Comparative study of fringes generation in two-spacing phase-shifting profilometry", Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 625223 (9 June 2006); https://doi.org/10.1117/12.677288

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