Publication Date:
2023-10-13
Description:
A field-integrated methodology using 3D ultrasonic tomography supported by close range
photogrammetry (CRP) has been developed and evaluated as a tool to detect the presence and
patterns of decay forms in a living adult holm oak (Quercus ilex L.) in an urban green area.
Description:
A field-integrated methodology using 3D ultrasonic tomography supported by close range
photogrammetry (CRP) has been developed and evaluated as a tool to detect the presence and
patterns of decay forms in a living adult holm oak (Quercus ilex L.) in an urban green area of the
city of Cagliari, Sardinia, Italy. Close range photogrammetry was used to compute a high resolution
3D model of the studied tree, texturized with natural colors. Moreover, following the implemented
workflow process it was possible to evaluate the deformation pattern of the studied tree over time.
In a second step of our integrated approach, and in order to diagnose the state of health of the
inner part of the studied tree in a non-invasive way, laboratory and in situ non-invasive ultrasonic
techniques were applied. The results of the close range photogrammetry analysis supported the
optimal design of the 3D ultrasonic tomography of the living adult holm oak. Ultrasonic tomography
is one of the most powerful non-destructive testing techniques for the full-volume inspection of a
structure. It produced physical information on the inner structure of the stem of the investigated
tree. The results of the study show that the integrated application of close range photogrammetry
and 3D ultrasonic tomography is a powerful tool for a highly accurate and objective evaluation of
the external and internal decay of trees and for monitoring their conservation states. With the fully
integrated approach, the diagnostic process aimed to prevent instability and the failure of trees can
be greatly improved.
Description:
Published
Description:
1199
Description:
7A. Geofisica per il monitoraggio ambientale
Description:
JCR Journal
Keywords:
wood decay
;
close range photogrammetry
;
3D ultrasonic tomography
;
risk failure
;
holm oak
;
05.04. Instrumentation and techniques of general interest
;
Monitoring of trees
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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