Self-calibration for lab-μCT using space-time regularized projection-based DVC and model reduction - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Measurement Science and Technology Année : 2018

Self-calibration for lab-μCT using space-time regularized projection-based DVC and model reduction

Résumé

An online calibration procedure for X-ray lab-CT is developed using projection-based digital volume correlation. An initial reconstruction of the sample is positioned in the 3D space for every angle so that its projection matches the initial one. This procedure allows a space-time displacement field to be estimated for the scanned sample, which is regularized with i) rigid body motions in space and ii) modal time shape functions computed using model reduction techniques (i.e., proper generalized decomposition). The result is an accurate identification of the position of the sample adapted for each angle, which may deviate from the desired perfect rotation required for standard reconstructions. An application of this procedure to a 4D in situ mechanical test is shown. The proposed correction leads to a much improved tomographic reconstruction quality.
Fichier principal
Vignette du fichier
MST_Calibration_accepted.pdf (1.46 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01633741 , version 1 (13-11-2017)

Identifiants

Citer

Clément Jailin, Ante F Buljac, Amine Bouterf, Martin Poncelet, François Hild, et al.. Self-calibration for lab-μCT using space-time regularized projection-based DVC and model reduction. Measurement Science and Technology, 2018, 29, 024003, 13 p. ⟨10.1088/1361-6501/aa9818⟩. ⟨hal-01633741⟩
172 Consultations
300 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More