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Literature review of acoustic and ultrasonic tomography in standing trees

Abstract : Wood is a biological growth medium, and given that standing trees adapt themselves in their growth to environmental conditions, their material properties vary with age. These changes result in variations that are far more complex than anisotropy. Wood quality and intraspecific variability can thus be studied to gain an understanding of the development mechanisms of trees, and this can be useful for clonal selection and the management of tree communities. A number of techniques are available to determine wood properties in standing trees, but the signal-processing approaches currently used are not always robust and do not always provide the image resolution needed in the particular cases of acoustic or ultrasonic tomography. This review paper thus aims to present important aspects that should be taken into account when using tomography techniques and addresses a number of open problems. A brief review of current non-destructive wood imaging techniques is initially presented followed by a comparison of the protocols, methods and models used in acoustic and ultrasonic tomography. The devices cited were studied in terms of measurement systems and signal processing. The analysis aimed to highlight and analyze the advantages and disadvantages of each device and describe challenges and trends. The effect of various parameters is discussed: frequency, signal-to-noise ratio, number of sensors and inversion algorithm. General conclusions are then drawn in relation to future signal-processing work in the acoustic and ultrasonic tomography of standing trees.
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Contributor : Philippe Lasaygues <>
Submitted on : Friday, April 1, 2016 - 4:40:46 PM
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Andrés Arciniegas, Flavio Prieto, Loïc Brancheriau, Philippe Lasaygues. Literature review of acoustic and ultrasonic tomography in standing trees. Trees - Structure and Function, Springer Verlag, 2014, 28 (6), pp.1559-1567. ⟨10.1007/s00468-014-1062-6⟩. ⟨hal-01296908⟩



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