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Nardinocchi, C.
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Nardinocchi, C.
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- PublicationOpen AccessAssessing and improving the measuring capability of the Etna_NETVIS camera network for lava flow rapid mapping(2014-04-27)
; ; ; ; ; ; ; ; ; ; ; ; ;Marsella, M.; DICEA, Sapienza - Università di Roma, Roma, Italy ;D’Aranno, P. J. V.; DICEA, Sapienza - Università di Roma, Roma, Italy ;Nardinocchi, C.; DICEA, Sapienza - Università di Roma, Roma, Italy ;Scifoni, S.; DICEA, Sapienza - Università di Roma, Roma, Italy ;Scutti, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Sonnessa, A.; DICEA, Sapienza - Università di Roma, Roma, Italy ;Biale, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Ciancitto, F.; 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; ; ; ; ; ; ; ; ; ; ; This work is aimed at improving the performance of the ground NEtwork of Thermal and VIsible and cameras located on Mt. Etna volcano (Etna_NETVIS) by optimizing its observational capability on lava flows evolution and by developing dedicated tools for systematically measuring quantitative parameters of known accuracy. The first goal will be achieved through the analysis of the geometrical configuration and its improvement by means of the establishment of additional observation sites to be equipped with mobile stations, depending on the area of interest. This will increment the spatial coverage and improve the observation of the most active areas for surface sin-eruptive processes. For the second objective we will implement new processing tools to permit a reliable quantitative use of the data collected by the surveillance sensors of NETVIS, extending their capability in monitor the lava flow thermal and spatial evolution and by providing georeferenced data for rapid mapping scope. The tool will be used to automatically pre-process multitemporal datasets and will be tested on both simulated and real scenarios. Thanks to data collected and archive by the NETVIS INGV team, we will have the opportunity to develop and test the procedure in different operational conditions selected among the large number of lava flows coupled to lava fountan events occurred between 2011 and 2013. Additionally, Etna_NETVIS data can be used to downscale the information derived from satellite data and/or to integrate the satellite datasets in case of incomplete coverage or missing acquisitions (both due to low revisiting time or bad geometrical conditions). Therefore an additional goal is that of comparing/integrating quantitative data derived from visible and radar satellite sensors with the maps obtained using Etna_NETVIS. The procedure will take into account the discrepancy among the different datasets in terms of accuracy and resolution and will attempt to provide a combined approach (based on error analysis and data weighting) to evaluate the final results reliability. Preliminary results on the procedure and algorithm adopted for geometric and radiometric sensor calibration, definition of optimized configurations through simulation and for extracting updated mapping data from multi-temporal dataset will be presented. This work is developed in the framework of the EU-FP7 project “MED-SUV” (MEDiterranean SUpersite Volcanoes).177 182 - 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 - PublicationOpen AccessMonitoring Active Volcanos Using Aerial Images and the Orthoview Tool(2014-12-05)
; ; ; ; ; ;Marsella, M.; Università di Roma La Sapienza ;Nardinocchi, C.; Università di Roma La Sapienza ;Proietti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia ;Daga, L.; SurveyLab, Spinoff of La Sapienza ;Coltelli, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Catania, Catania, Italia; ; ; ; In volcanic areas, where it can be difficult to perform direct surveys, digital photogrammetry techniques are rarely adopted for routine volcano monitoring. Nevertheless, they have remarkable potentialities for observing active volcanic features (e.g., fissures, lava flows) and the connected deformation processes. The ability to obtain accurate quantitative data of definite accuracy in short time spans makes digital photogrammetry a suitable method for controlling the evolution of rapidly changing large-area volcanic phenomena. The systematic acquisition of airborne photogrammetric datasets can be adopted for implementing a more effective procedure aimed at long-term volcano monitoring and hazard assessment. In addition, during the volcanic crisis, the frequent acquisition of oblique digital images from helicopter allows for quasi-real-time monitoring to support mitigation actions by civil protection. These images are commonly used to update existing maps through a photo-interpretation approach that provide data of unknown accuracy. This work presents a scientific tool (Orthoview) that implements a straightforward photogrammetric approach to generate digital orthophotos from single-view oblique images provided that at least four Ground Control Points (GCP) and current Digital Elevation Models (DEM) are available. The influence of the view geometry, of sparse and not-signalized GCP and DEM inaccuracies is analyzed for evaluating the performance of the developed tool in comparison with other remote sensing techniques. Results obtained with datasets from Etna and Stromboli volcanoes demonstrate that 2D features measured on the produced orthophotos can reach sub-meter-level accuracy.295 347