Dynamic Tomographic Reconstruction of Deforming Volumes
AbstractThe motion of a sample while being scanned in a tomograph prevents its proper volume reconstruction. In the present study, a procedure is proposed that aims at estimating both the kinematics of the sample and its standard 3D imaging from a standard acquisition protocol (no more projection than for a rigid specimen). The proposed procedure is a staggered two-step algorithm where the volume is first reconstructed using a “Dynamic Reconstruction” technique, a variant of Algebraic Reconstruction Technique (ART) compensating for a “frozen” determination of the motion, followed by a Projection-based Digital Volume Correlation (P-DVC) algorithm that estimates the space/time displacement field, with a “frozen” microstructure and shape of the sample. Additionally, this procedure is combined with a multi-scale approach that is essential for a proper separation between motion and microstructure. A proof-of-concept of the validity and performance of this approach is proposed based on two virtual examples. The studied cases involve a small number of projections, large strains, up to 25%, and noise. View Full-Text
Share & Cite This Article
Jailin, C.; Roux, S. Dynamic Tomographic Reconstruction of Deforming Volumes. Materials 2018, 11, 1395.
Jailin C, Roux S. Dynamic Tomographic Reconstruction of Deforming Volumes. Materials. 2018; 11(8):1395.Chicago/Turabian Style
Jailin, Clément; Roux, Stéphane. 2018. "Dynamic Tomographic Reconstruction of Deforming Volumes." Materials 11, no. 8: 1395.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.