Publication Date:
2024-01-19
Description:
The aim of this study is to analyse problems related to thermal mapping obtained from
thermal data acquired from unmanned aerial systems (UAS) equipped with thermal cameras. We
focused on an accurate analysis of uncertainties introduced by the PIX4D Mapper software version
4.4.12 used to obtain the surface temperature maps of thermal images acquired using the UAS. To
achieve this aim, we used artificial thermal references during the surveys, as well as natural hot
targets, i.e., thermal anomalies in the Pisciarelli hydrothermal system in Campi Flegrei caldera (CFc).
Artificial thermal targets, expressly created and designed for this goal, are a prototype here called
“developed thermal target” (DTT) created by the drone laboratory at Istituto Nazionale di Geofisica
e Vulcanologia—Osservatorio Vesuviano (INGV-OV).We show the results obtained through three
surveys, and during the last two, thermal targets were positioned on land at different flight heights of
the UAS. Different heights were also necessary to test the spatial resolution of the DTT with the used
thermal camera as well as possible temperature differences between the raw images acquired via UAS
with the thermal mapping obtained from the PIX4D Mapper software. In this work, we estimate the
uncertainty that may be introduced by the mosaic procedure, and furthermore we find an attenuation
of the measured temperatures introduced by the different distances between the thermal anomaly
and sensor. These results appear to be of great importance for the subsequent calibration phase of
the thermal maps, especially in cases where these methodologies are applied for the purposes of
monitoring volcanic/geothermal areas.
Description:
Published
Description:
4385
Description:
OSV3: Sviluppo di nuovi sistemi osservazionali e di analisi ad alta sensibilità
Description:
JCR Journal
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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