Standing tree decay detection by using acoustic tomography images

Espinosa Morenon Luis Fernando, Arciniegas Andres, Prieto Flavio, Cortes Yolima, Brancheriau Loïc. 2015. Standing tree decay detection by using acoustic tomography images. In : Twelfth International Conference on Quality Control by Artificial Vision. Fabrice Meriaudeau (ed.), Olivier Aubreton (ed.). 2i, CNRS, Université de Bourgogne. Washington : SPIE, 6 p. (Proceedings of SPIE, 9534) ISBN 978-1-62841-699-2 International Conference on Quality Control by Artificial Vision. 12, Le Creusot, France, 3 Juin 2015/5 Juin 2015.

Résumé : The acoustic tomographic technique is used in the diagnosis process of standing trees. This paper presents a segmentation methodology to separate defective regions in cross-section tomographic images obtained with Arbotom® device. A set of experiments was proposed using two trunk samples obtained from a eucalyptus tree, simulating defects by drilling holes with known geometry, size and position and using different number of sensors. Also, tomographic images from trees presenting real defects were studied, by testing two different species with significant internal decay. Tomographic images and photographs from the trunk cross-section were processed to align the propagation velocity data with a corresponding region, healthy or defective. The segmentation was performed by finding a velocity threshold value to separate the defective region; a logistic regression model was fitted to obtain the value that maximizes a performance criterion, being selected the geometric mean. Accuracy segmentation values increased as the number of sensors augmented; also the position influenced the result, obtaining improved results in the case of centric defects.

Classification Agris : K50 - Technologie des produits forestiers
U30 - Méthodes de recherche
F50 - Anatomie et morphologie des plantes

Auteurs et affiliations

• Espinosa Morenon Luis Fernando, Universidad Nacional de Colombia (COL)
• Arciniegas Andres, CNRS (FRA)
• Prieto Flavio, Universidad Nacional de Colombia (COL)
• Cortes Yolima, District Environment Secretariat (COL)
• Brancheriau Loïc, CIRAD-PERSYST-UPR BioWooEB (FRA) ORCID: 0000-0002-9580-7696

Source : Cirad-Agritrop (https://agritrop.cirad.fr/576576/)

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