Quantitative parametric imaging by ultrasound computed tomography of trees under anisotropic conditions: Numerical case study
A method for the reconstruction of 2D tomographic images adapted to wood was presented, aiming to perform a nondestructive evaluation of standing trees. The proposed method takes into account the orthotropy property of wood material, performing an iterative process that approximated the curved rays. A slowness function was defined for every cell and a nonlinear regression allowed the mapping of the inner elastic constants. Four numerical configurations were tested representing real cases usually found in standing tree monitoring. These specific configurations allowed this work to focus on the analysis of the effect of anisotropy on image reconstruction. The reconstructed images using the proposed method were compared with a straight-ray reconstruction method (filtered back projection algorithm), highlighting a more detailed identification and quantification of the inner state of the anisotropic structure of the trunk.
Main Authors: | Espinosa, Luis, Prieto, Flavio, Brancheriau, Loïc, Lasaygues, Philippe |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | U30 - Méthodes de recherche, K01 - Foresterie - Considérations générales, imagerie, tomographie, bois, http://aims.fao.org/aos/agrovoc/c_36760, http://aims.fao.org/aos/agrovoc/c_16614, http://aims.fao.org/aos/agrovoc/c_8421, |
Online Access: | http://agritrop.cirad.fr/595848/ http://agritrop.cirad.fr/595848/1/595848.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Formation spécialisée des agents de l'Etat dans le cadre de la mise en place d'un Centre de Données Forestières en République Centrafricaine. Session C3 "Interprétation avancée d'images satellitales à l'aide du logiciel TNTmips" : compte-rendu de mission en RCA du 12/05/2006 au 28/05/2006
by: Brognoli, Christine -
Non-destructive diagnosis of the integrity of green wood using ultrasonic computed tomography
by: Lasaygues, Philippe, et al. -
Ultrasound computed tomography on standing trees: Accounting for wood anisotropy permits a more accurate detection of defects
by: Espinosa, Luis, et al. -
Tomography in standing trees: revisiting the determination of acoustic wave velocity
by: Arciniegas Mosquera, Andrès Felipe, et al. -
Device for ultrasound imaging of standing trees
by: Arciniegas, Andres, et al.