Publication Date:
2019-03-26
Description:
Abstract.
When combined, the three-dimensional imaging
of different physical properties of architectural monumen-
tal structures acquired through different methodologies can
highlight with efficiency the characteristics of the stone
building materials. In this work, we compound high res-
olution Digital Color Images (DCI) and Terrestrial Laser
Scanner (TLS) data for a dense 3-D reconstruction of an
ancient pillar in a nineteenth century building in the town
of Cagliari, Italy. The TLS technique was supported by a
digital photogrammetry survey in order to obtain a natural
color texturized 3-D model of the studied pillar. Geometri-
cal anomaly maps showing interesting analogies were com-
puted both from the 3-D model derived from the TLS ap-
plication and from the high resolution 3-D model detected
with the photogrammetry. Starting from the 3-D reconstruc-
tion from previous techniques, an acoustic tomography in a
sector of prior interest of the investigated architectural ele-
ment was planned and carried out. The ultrasonic tomogra-
phy proved to be an effective tool for detecting internal decay
or defects, locating the position of the anomalies and estimat-
ing their sizes, shapes, and characteristics in terms of elastic-
mechanical properties. Finally, the combination of geophysi-
cal and petrographical data sets represents a powerful method
for understanding the quality of the building stone materials
in the shallow and inner parts of the investigated architectural
structures.
Description:
Regione Autonoma della Sardegna (RAS) (Sardinian Autonomous Region), Regional Law 7th August 2007, no. 7, Promotion of scientific research and technological innovation in Sardinia (Italy).
Description:
Published
Description:
57-62
Description:
5T. Sismologia, geofisica e geologia per l'ingegneria sismica
Description:
JCR Journal
Keywords:
Architectural monumental structures
;
Structural Diagnosis
;
Digital Color Images
;
3D Terrestrial Laser Scanner
;
Acoustic tomography
;
Petrographical data
;
3D Modeling
;
Cultural Heritage
;
Architectural Elements ND Diagnosis
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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