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Article Dans Une Revue Experimental Mechanics Année : 2013

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

Résumé

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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Dates et versions

hal-00834981 , version 1 (01-10-2013)

Identifiants

Citer

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, 2013, 53 (8), pp.1357-1370. ⟨10.1007/s11340-013-9741-6⟩. ⟨hal-00834981⟩
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