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Demodulation of spatial carrier images: Performance analysis of several algorithms using a single image

Abstract : Optical full-field techniques have a great importance in modern experimental mechanics. Even if they are reasonably spread among the university laboratories, their diffusion in industrial companies remains very narrow for several reasons, especially a lack of metrological performance assessment. A full-field measurement can be characterized by its resolution, bias, measuring range, and by a specific quantity, the spatial resolution. The present paper proposes an original procedure to estimate in one single step the resolution, bias and spatial resolution for a given operator (decoding algorithms such as image correlation, low-pass filters, derivation tools ...). This procedure is based on the construction of a particular multi-frequential field, and a Bode diagram representation of the results. This analysis is applied to various phase demodulating algorithms suited to estimate in-plane displacements
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https://hal.archives-ouvertes.fr/hal-00834981
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Soumis le : mardi 1 octobre 2013 - 14:09:02
Dernière modification le : mercredi 24 février 2021 - 16:16:06
Archivage à long terme le : : mardi 4 avril 2017 - 23:35:32

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Claudiu Badulescu, Michel Bornert, J.C. Dupré, P. Esquis, Michel Grediac, et al.. Demodulation of spatial carrier images: Performance analysis of several algorithms using a single image. Experimental Mechanics, Society for Experimental Mechanics, 2013, 53 (8), pp.1357-1370. ⟨10.1007/s11340-013-9741-6⟩. ⟨hal-00834981⟩

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