Standing tree decay detection by using acoustic tomography images

Abstract : 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
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https://hal.umontpellier.fr/hal-02287091
Contributeur : Yannick Brohard <>
Soumis le : vendredi 13 septembre 2019 - 16:34:43
Dernière modification le : samedi 14 septembre 2019 - 01:26:57

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  • HAL Id : hal-02287091, version 1

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Luis Espinosa, Andrés Arciniegas, Flavio Prieto, Yolima Cortes, Loïc Brancheriau. Standing tree decay detection by using acoustic tomography images. The International Conference on Quality Control by Artificial Vision 2015, Jun 2015, Le Creusot, France. pp.953404. ⟨hal-02287091⟩

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