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Wahbeh, W.
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Wahbeh, W.
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- PublicationOpen AccessEtna_NETVIS: A dedicated tool for automatically pre-processing high frequency data useful to extract geometrical parameters and track the evolution of the lava field(Geophysical Research Abstracts, 2016-04-17)
; ; ; ; ; ; ; ; ; ; ; ; ; ;Marsella, M.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;D'Aranno, P. J .V.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;De Bonis, R.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Nardinocchi, C.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Scifoni, S.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Scutti, M.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Sonnessa, A.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Wahbeh, W.; DICEA - Survey Lab Spinoff of Sapienza University, Roma, Italy (informazioni@surveylab.info) ;Biale, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Coltelli, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Pecora, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Prestifilippo, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Proietti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; ; ; ; ; ; ; ; ; ; ; ; In order to improve the observation capability in one of the most active volcanic areas in the world, Mt. Etna, we developed a processing method to use the surveillance cameras for a quasi real-time mapping of syn-eruptive processes. Following an evaluation of the current performance of the Etna permanent ground NEtwork of Thermal and Visible Sensors (Etna_NETVIS), its possible implementation and optimization was investigated to determine the locations of additional observation sites to be rapidly set up during emergencies. A tool was then devised to process time series of ground-acquired images and extract a coherent multi-temporal dataset of georeferenced map. The processed datasets can be used to extract 2D features such as evolution maps of active lava flows. The tool was validated on ad-hoc test fields and then adopted to map the evolution of two recent lava flows. The achievable accuracy (about three times the original pixel size) and the short processing time makes the tool suitable for rapidly assessing lava flow evolutions, especially in the case of recurrent eruptions, such as those of the 2011–2015 Etna activity. The tool can be used both in standard monitoring activities and during emergency phases (eventually improving the present network with additional mobile stations) when it is mandatory to carry out a quasi-real-time mapping to support civil protection actions. The developed tool could be integrated in the control room of the Osservatorio Etneo, thus enabling the Etna_NETVIS for mapping purposes and not only for video surveillance.107 100 - PublicationOpen AccessThe Use of Surveillance Cameras for the Rapid Mapping of Lava Flows: An Application to Mount Etna Volcano(2017-02-25)
; ; ; ; ; ; ; ; ; ; ; ;Coltelli, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;D'Aranno, P. J .V.; Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy ;De Bonis, R.; Survey Lab, Spinoff Sapienza University, Via Eudossiana 18, 00184 Rome, Italy ;Guerrero Tello, J. F.; Survey Lab, Spinoff Sapienza University, Via Eudossiana 18, 00184 Rome, Italy ;Marsella, M.; Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy ;Nardinocchi, C.; Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy ;Pecora, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Proietti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Scifoni, S.; Università di Roma La Sapienza, Via Eudossiana 18, 00184 Rome, Italy ;Scutti, M.; Survey Lab, Spinoff Sapienza University, Via Eudossiana 18, 00184 Rome, Italy ;Wahbeh, W.; University of Applied Sciences and Arts Northwestern Switzerland FHNW, Gründenstrasse 40, 4132 Muttenz, Switzerland; ; ; ; ; ; ; ; ; ; In order to improve the observation capability in one of the most active volcanic areas in the world, Mt. Etna, we developed a processing method to use the surveillance cameras for a quasi real-time mapping of syn-eruptive processes. Following an evaluation of the current performance of the Etna permanent ground NEtwork of Thermal and Visible Sensors (Etna_NETVIS), its possible implementation and optimization was investigated to determine the locations of additional observation sites to be rapidly set up during emergencies. A tool was then devised to process time series of ground-acquired images and extract a coherent multi-temporal dataset of georeferenced map. The processed datasets can be used to extract 2D features such as evolution maps of active lava flows. The tool was validated on ad-hoc test fields and then adopted to map the evolution of two recent lava flows. The achievable accuracy (about three times the original pixel size) and the short processing time makes the tool suitable for rapidly assessing lava flow evolutions, especially in the case of recurrent eruptions, such as those of the 2011–2015 Etna activity. The tool can be used both in standard monitoring activities and during emergency phases (eventually improving the present network with additional mobile stations) when it is mandatory to carry out a quasi-real-time mapping to support civil protection actions. The developed tool could be integrated in the control room of the Osservatorio Etneo, thus enabling the Etna_NETVIS for mapping purposes and not only for video surveillance.377 176 - PublicationOpen AccessA tool for mapping the evolution of a lava field through the Etna video-surveillance camera network(2016-04-06)
; ; ; ; ; ; ; ; ; ; ; ; ;Marsella, M.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;D'Aranno, P. J .V.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;De Bonis, R.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Nardinocchi, C.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Scifoni, S.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Scutti, M.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Sonnessa, A.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Wahbeh, W.; SurveyLab S.r.l. Spin Off of Sapienza - Università di Roma, Roma, Italy ;Biale, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Coltelli, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Pecora, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Proietti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Puglisi, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Spampinato, L.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Reitano, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; ; In active volcanic areas it is often difficult carry out direct surveys during an eruption, remote sensing techniques based on airborne/satellite platforms and ground-based sensors have remarkable monitoring potentialities in terms of safety and observation capability. In addition, the recent development of high resolution digital cameras, laser scanners and SAR instruments have improved the ability to obtain reliable measurements for modelling the evolution of effusive and explosive eruptions by following the rate of advancement of a lava flow or the dispersal of a volcanic plume. In order to collect data at an adequate level of accuracy and frequency it is not possible to exclusively rely on airborne or satellite methods and it is necessary to carry out measurements using also remote sensing instruments operating on the ground. Among the other techniques, the use of a simplified photogrammetric approach based a video-surveillance camera network represents a straightforward alternative for rapid mapping in active volcanic areas. Therefore a procedure for optimizing and extending the observational capability of the Etna NEtwork of Thermal and VIsible cameras (NETVIS) for systematically monitoring and quantifying surface sin-eruptive processes was implemented. The activity included also the extension of the permanent video-surveillance network by installing additional mobile stations. A dedicated tool for automatic processing of image datasets was developed and tested in both simulated and real scenarios to obtain a time series of digital orthophotos for tracking the evolution of a lava flow emplacement. The developed tool was tested by processing images acquired by the Etna_NETVIS sensors, in particular from Monte Cagliato thermal camera, during the 2011 paroxysmal episodes of the New South East Crater that poured lava flows in the Valle del Bove.138 111