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  • 1
    Publication Date: 2015-01-03
    Print ISSN: 1947-5705
    Electronic ISSN: 1947-5713
    Topics: Geosciences
    Published by Taylor & Francis
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  • 2
    Publication Date: 2015-01-03
    Print ISSN: 1947-5705
    Electronic ISSN: 1947-5713
    Topics: Geosciences
    Published by Taylor & Francis
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  • 3
    Publication Date: 2009-12-01
    Print ISSN: 0169-555X
    Electronic ISSN: 1872-695X
    Topics: Geography , Geosciences
    Published by Elsevier
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  • 4
    Publication Date: 2017-04-04
    Description: Over the years, MMS systems have demonstrated that accuracies suitable for all but the most demanding cadastral and engineering applications can be achieved. This result, combined with a reduction in both the time and cost of data collection, made MMS a very interesting technology potentially able to meet the demand of GIS operators for rapid spatial data updating. However, the high costs involved in the arrangement of such systems did not favoured their growth in the market, so that MMS are still today mainly operated by the companies or institutions that build them. To allow a wider community of spatial data user to benefit of mobile mapping applications - in particular the lower costs and greater efficiency of data collection – a portable systems, the Backpack MMS, was developed at the University of Calgary MMS in 2001. The research centre of CIRGEO re-implemented such system introducing a few significative changes due to the adoption of different hardware and software solutions with respect to the original project. Then, within a collaborative work with a research team of the Vesuvius Observatory, in summer 2006 this version of the Backpack MMS was tested in a real environment: the goal was to assess the effectiveness of the Backpack as a tool for mapping evacuation routes on areas subjected to natural hazards. In this paper we report a description of our system configuration and the results of performed test along with a few comments on practical issues that affected the final accuracy of mapped routes.
    Description: Published
    Description: Padova
    Description: 1.10. TTC - Telerilevamento
    Description: open
    Keywords: mobile mapping ; close range photogrammetry ; sensor integration ; 05. General::05.04. Instrumentation and techniques of general interest::05.04.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 5
    Publication Date: 2017-04-04
    Description: In the last years, unmanned aerial vehicle (UAV) systems have become very attractive for various commercial, industrial, public, scientific, and military operations. Potential tasks include pipeline inspection, dam surveillance, photogrammetric survey, infrastructure maintenance, inspection of flooded areas, fire fighting, terrain monitoring, volcano observations, and any utilization which requires land recognition with cameras or other sensors. The flying capabilities provided by UAVs require a welltrained pilot to be fully and effectively exploited; moreover the flight range of the piloted helicopter is limited to the line-of-sight or the skill of the pilot to detect and follow the orientation of the helicopter. Such issues are even more important considering that the vehicle will carry and operate automatically a camera used for a photogrammetric survey. All this has motivated research and design for autonomous guidance of the vehicle which could both stabilize and guide the helicopter precisely along a reference path. The constant growth of research programs and the technological progress in the field of navigation systems, as denoted by the production of more and more performing global positioning systems integrated with inertial navigation sensors, allowed a strong cost reduction and payload miniaturization, making the design of low-cost UAV platforms more feasible and attractive. In this paper, we present the results of a flight simulation system developed for the setup of the vehicle’s servos, which our autonomous guidance system, as well as the module for camera photogrammetric image acquisition and synchronization, will be based on. Building a simulated environment allows to evaluate in advance what the main issues of a complex control system are to avoid damage of fragile and expensive instruments as the ones mounted on a model helicopter and to test methods for synchronization of the camera with flight parameters.
    Description: Published
    Description: 85-95
    Description: 1.10. TTC - Telerilevamento
    Description: N/A or not JCR
    Description: reserved
    Keywords: UAV ; Model helicopter ; Kalman filter ; MEMS ; 04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
    Publication Date: 2017-04-04
    Description: RIASSUNTO Negli anni recenti, la possibilità offerta dal laser scanner terrestre di acquisire grandi quantità di dati in tempi relativamente brevi, con un grado di precisione e dettaglio elevati, ha spinto l’interesse di topografi, ingegneri, architetti e archeologi a considerare il laser a scansione come uno strumento di rilevamento fondamentale per la modellazione 3D di oggetti e ambienti facenti parte del Patrimonio Culturale di una nazione. Prova di tale fenomeno è costituito dall’ampia varietà di oggetti che sino ad oggi sono stati sottoposti a scansione: dal piccolo pezzo di ceramica alla statua di marmo, dall’edificio storico ad un intero sito archeologico. D’altra parte, nel panorama dei possibili impieghi del laser a scansione, la sua applicazione per il controllo di stabilità di una struttura o edificio di interesse storico appare tutt’ora un campo di ricerca poco indagato. Al fine di approfondire questa tematica di ricerca, è stato attivato un progetto triennale volto a verificare la possibilità di utilizzare in modo integrato una molteplicità di tecniche di rilevamento per il controllo della stabilità di una struttura storica caratterizzata da una geometria complessa. In particolare, tale progetto prevede di utilizzare strumentazione laser scanner terrestre, stazione totale, flessimetri, fotogrammetria e termografia per effettuare una serie di rilievi a cadenza semestrale del Teatro Anatomico dell’Università di Padova. Lo scopo del progetto in questione è quello di verificare la stabilità nel tempo di questo tipo di struttura, considerando in particolare gli effetti del decadimento organico delle parti in legno. In questa nota vengono quindi presentati i risultati ottenuti finora, ponendo particolare attenzione ai problemi e difficoltà insorte nel rilievo laser scanner e modellazione 3D di una struttura di interesse storico e culturale caratterizzata da una geometria inusuale e alquanto complessa. ABSTRACT The chance provided by terrestrial laser scanners to achieve, in short time, very dense, accurate and detailed 3D data drew in recent years the interest of surveyors, engineers, architects and archaeologists towards the laser scanning technique as an invaluable surveying mean for 3D modeling of sites and artifacts of cultural heritage. A wide variety of objects, e.g., small pieces of pottery, statues, buildings, and large areas of archaeological sites, have been scanned and modeled for various purposes like preservation, reconstruction, study, and museum exhibitions. However, the use of TLS systems for stability control is still a research field not much investigated. In the view of insight investigation on this topic, a three-years project has been established in order to evaluate the use of multiple surveying techniques for the stability control of a complex historical structure. To this aim, terrestrial laser scanning (TLS), total station (TS), deflectometers, photogrammetry and thermography are being employed to perform on a 6 month basis a set of surveys of the Anatomy Theatre, one of the oldest, most important and best-known historical “medical” buildings. Located inside the Palazzo del Bo’, the building seat of the University of Padua, Italy. The main goal of this work is to verify the stability over the time of this kind of structure, given the inherent organic decay of the wooden parts. In this paper we present the results obtained from the repeated surveys and highlight issues and difficulties related to the laser scanning of an unusual geometry such as the one provided by the Anatomy Theatre of the University of Padua.
    Description: Published
    Description: Sorrento
    Description: 5.4. TTC - Sistema Informativo Territoriale
    Description: open
    Keywords: Laser Scanner ; modellazione 3D ; Analisi Elementi Finiti ; controllo stabilità ; 04. Solid Earth::04.03. Geodesy::04.03.06. Measurements and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 7
    Publication Date: 2017-04-04
    Description: In the last years UAV (Unmanned Aerial Vehicle) systems are become very actractive for various commercial, industrial, public, scientific and military operations. The tasks include pipeline inspection, dam surveillance, photogrammetric survey, infrastructure maintenance, inspection of flooded areas, fire fighting, terrain monitoring, volcano observations and so on. The impressive flying capabilities provided by UAVs require a well trained pilot to be fully and effectively exploited; moreover the flight range of the piloted helicopter is limited to the line-of-sight or the skill of the pilot to detect and follow the orientation of the helicopter. Such issues have motivated the research and the design for autonomous system guidance which could both stabilize and also guide the helicopter precisely along a reference path. The constant growth of research programs and the technological progress in the field of navigation systems, as denoted by the production of more and more performing GPS/INS integrated units, allowed a strong cost reduction and payload miniaturization, making the design of low cost UAV platforms more feasible and actractive. Small autonomous helicopters have demonstrated to be a useful platform for a number of airborne-based applications such as aerial mapping and photography, surveillance (both military and civilian), powerline inspection and agricolture monitoring. In this paper we present the results of a flight simulation system developed for the setup of the servos which our autonomous guidance system will be based on. Building a simulated environment allows, indeed, to evaluate in advance what are the main issues of a complex control system, avoiding to damage fragile and expensive instruments as the ones mounted on a model helicopter.
    Description: Istituto Nazionale di Geofisica e Vulcanologia - Napoli CIRGEO – Interdepartment Research Center for Geomatics, University of Padova
    Description: Published
    Description: Beijing (CHINA)
    Description: 1.10. TTC - Telerilevamento
    Description: open
    Keywords: UAV ; model helicopter ; Kalman filter ; MEMS ; 04. Solid Earth::04.03. Geodesy::04.03.09. Instruments and techniques
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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