Vladimiro Achilli

Vladimiro Achilli
University of Padova | UNIPD · Department of Civil, Environmental and Architectural Engineering ICEA

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126
Publications
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Publications

Publications (126)
Article
The study of ancient buildings and architectural complexes starts necessarily from a detailed and geometrically correct graphic documentation of their state of conservation that allows a complete analysis and understanding of their planar and volumetric development, as well as of their structural, material and constructive features. This is the cas...
Article
Full-text available
Mass movements represent a serious threat to the stability of human structures and infrastructures, and cause loss of lives and severe damages to human properties every year worldwide. Built structures located on potentially unstable slopes are susceptible to deformations due to the displacement of the ground that at worst can lead to total destruc...
Chapter
The main aim of this study is to compare the two commonly used multi-temporal interferometric synthetic aperture radar (InSAR) techniques, i.e. permanent scatterers (PS) and small baseline subset (SBAS), in monitoring shallow landslides. PS and SBAS techniques have been applied to ascending and descending Sentinel-1 SAR data to measure the rate of...
Article
Full-text available
In the mountain environment, the presence of fractures or degradation in the rock mass could represent an important risk both for the safety of population and for the anthropic structures that have a productive, touristic and/or historical importance. For this reason, the monitoring is a primary action of control and risk mitigation. In this work a...
Article
Full-text available
3D survey methodologies are widely applied to the Cultural Heritage, employing both TLS and close-range photogrammetry with SfM techniques. Laser scanning produces models with high metric reliability and accuracy, whereas the main quality of the 3D photogrammetry is the result in term of photorealistic representation. Many studies have been conduct...
Article
Full-text available
Italy hosts a considerable part of the world's great art treasures. This great heritage must be protected from risks deriving from a territory characterized by hydrogeological problems and high seismicity. For these reasons, despite the preventive measures that can be foreseen, the need to face emergencies is recurrent. The main instrument to addre...
Article
The main aim of this work is to present the results of the geomatic survey, data collection and data processing that were conducted as part of the MACH project (MACH – Multidisciplinary methodological Approaches to the knowledge, conservation and valorization of Cultural Heritage) of the University of Padua. This wide research has regarded the stud...
Conference Paper
The Po is the largest river of Italy, it opens with a delta mouth in the Adriatic Sea and it is bounded by the Apennines to the South and by Alps to the North and West. The modern delta occupies a broad area of about 380 Km2, with a coastal extension of around 120 Km. Several industrial activities, intensive farming and important naturalistic areas...
Article
River deltas are very complex environments vulnerable to flooding. Most of the world’s deltas are facing the immediate threat of land subsidence that jeopardizes the safety of millions of people worldwide. In Italy, the Po River Delta (PRD) (Northeast Italy) is an area historically affected by high rate of subsidence due to natural and anthropic fa...
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Deck inclination and vertical displacements are among the most important technical parameters to evaluate the health status of a bridge and to verify its bearing capacity. Several methods, both conventional and innovative, are used for structural rotations and displacement monitoring; however, none of these allow, at the same time, precision, autom...
Preprint
Deck inclination and vertical displacements are among the most important technical parameters to evaluate the health status of a bridge and to verify its bearing capacity. Several methods, both conventional and innovative, are used for structural rotations and displacement monitoring; no one of these does allow, at the same time, precision, automat...
Preprint
Vertical displacements are among the most important technical parameters to evaluate the health status of a bridge structure and to verify its bearing capacity. Several methods, both conventional and innovative, are used for structural displacement monitoring; no one of these does allow, at the same time, precision, automation, long term and dynami...
Conference Paper
Open image in new windowThe main aim of this study is to test the effectiveness of Sentinel-1A Synthetic Aperture Radar (SAR) data in monitoring scarcely urbanized slopes affected by slow-moving instabilities. To this end, geological and geomorphological surveys were carried out, satellite SAR data were processed and a GPS network system was instal...
Article
Full-text available
This work describes the three-dimensional survey of “Ex Stazione Frigorifera Specializzata”: initially used for agricultural storage, during the years it was allocated to different uses until the complete neglect. The historical relevance and the architectural heritage that this building represents has brought the start of a recent renovation proje...
Article
Land subsidence due to underground resources exploitation is a well-known problem that affects many cities in the world, especially the ones located along the coastal areas where the combined effect of subsidence and sea level rise increases the flooding risk. In this study, 25 years of land subsidence affecting the Municipality of Ravenna (Italy)...
Conference Paper
Full-text available
L'andamento della subsidenza recente nell'area del delta del Po, storicamente affetta da questa problematica, viene studiata utilizzando dati SAR dei satelliti ERS-1/2 (dal 17 luglio 1995 al 10 agosto 1998), ENVISAT (dal 30 giugno 2003 al 31 marzo 2010) e Sentinel-1A (dal 12 ottobre 2014 al 7 settembre 2016) integrati con i dati di livellazione geo...
Article
Full-text available
The main aim of this study is to comprehend landslide phenomena that affect the area of Rovegliana (North-Eastern Italian pre-Alps), quantifying soil displacements and investigating conditions that influence slope dynamics. Geological surveying turns out to be useful as support to the satellite radar interferometry technique, whose results allowed...
Article
Phaistos is one of the main Minoan palatial sites in the Aegean context. The ancient sources and the scarce archaeological records indicate that the city, destroyed by the nearby town of Gorthina during second century bc, underwent also an important post-palatine phase from alto-archaic and archaic age to Hellenistic age, still scarcely excavated....
Article
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The Emilia Romagna Region (N-E Italy) and in particular the Adriatic Sea coastline of Ravenna, is affected by a noticeable subsidence that started in the 1950s, when the exploitation of on and off-shore methane reservoirs began, along with the pumping of groundwater for industrial uses. In such area the current subsidence rate, even if lower than i...
Article
Full-text available
The Emilia Romagna Region (N-E Italy) and in particular the Adriatic Sea coastline of Ravenna, is affected by a noticeable subsidence that started in the 1950s, when the exploitation of on and off-shore methane reservoirs began, along with the pumping of groundwater for industrial uses. In such area the current subsidence rate, even if lower than i...
Chapter
Nell’ambito del progetto ‘Κιμωλία Γή’ - KERP (Kimolian Earth Research Project) è stato eseguito il primo rilievo del sito archeologico della baia di Ellinika. Contestualmente allo studio e approfondimento degli aspetti storico-archeologici, è fondamentale e organico all’analisi globale condurre delle campagne di rilievo che permettano di ottenere l...
Conference Paper
Full-text available
Land subsidence affecting the Ravenna Municipality (Emilia Romagna Region, NE Italy) is one of the best example on how the exploitation of natural resources can affect the environment and the territory. In fact, the pumping of groundwater and the extraction of gas from both on and offshore reservoirs, started in the 1950s, have caused a strong land...
Article
Full-text available
Geomatic approaches were used to investigate a landslide in the Emilian Apennines in northern Italy which occurred during excavation works for high-speed railway tunnels between 2002 and 2007. The landslide damaged three buildings located on the upper part of a hillside. At the site of interest, the high-speed railway system included three contiguo...
Conference Paper
Full-text available
In this work, the subsidence in the Ravenna area is estimated by means of the integration between the classical geometric leveling techniques with the more recent SAR (Synthetic Aperture Radar) methodology: Small Baseline Subset (SBAS). This is an interesting area due to the presence of methane reservoirs the exploitation of which has caused in the...
Article
Full-text available
Subsidence in a deformation area can be measured in various ways, examples being conventional high-precision leveling, differential InSAR and multi-temporal GPS surveys. Integration of methods can improve results, and is crucial to extract high-precision data. In particular, orthometric and ellipsoid elevations, surveyed at different moments in tim...
Article
The safeguarding of Venice and the Venetian lagoon (Italy) from rising water is of great national interest. Besides the normal tidal regime, the effects of an increase in the frequency and intensity of floods in the lagoon have been accentuated by a reduction in the elevation of the land in respect to the actual average sea level. With the aim of r...
Conference Paper
La fotogrammetria digitale è una metodologia di rilievo che permette di ottenere informazioni metriche tridimensionali di oggetti dall’analisi di immagini acquisite da differenti punti di presa. L’aerofotogrammetria utilizza fotografie acquisite da aerei per il rilievo del territorio. La disponibilità di voli d’archivio, effettuati negli ultimi 70-...
Article
Full-text available
In the framework of the development of a web site devoted to the documentation and monitoring of the cultural heritage (above all monumental buildings), a semiautomatic method for anomalous change detection has been set up. The method uses the grouping of the image difference values, to detect both small and diffused changes. Three tests are descri...
Article
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Three-dimensional methodologies as Terrestrial Laser Scanning (TLS) and digital photogrammetry, are used to extract digital models of surfaces. In this paper, the two different approaches, integrated with classical topographic methodologies, were applied in the 3D survey of a portion of Phaistos Palace in Crete island. The archaeological site repre...
Article
Laser scanning methodology which has been used in different sectors, allow surveying an object by means of very dense and accurate point clouds acquisitions. The alignment and co-registration in a defined reference system allow generating a D model of the object, with the possibility to associate the radiometric information useful in many applicati...
Article
Full-text available
L’integrazione di metodologie geomatiche di rilievo 3D terrestre ad alta risoluzione, come la fotogrammetria digitale, il laser scanning e le misure topografiche classiche, permette l’acquisizione di grandi quantità di informazioni con precisioni elevate. In questo lavoro il laser scanning e la fotogrammetria digitale sono state utilizzate per il r...
Conference Paper
Nel lavoro vengono analizzate le variazioni planimetriche della fascia costiera del delta del Po da Porto Caleri (Rovigo) al Lido di Volano (Ferrara); lo studio è stato effettuato mediante rilievi aero-fotogrammetrici multi-temporali realizzati nel 1933, 1944, 1955, 1977, 1999 e 2008, alcuni dei quali con copertura parziale. Tale lavoro è stato rea...
Chapter
Nell’ambito della mostra Metamorfosi, l’approccio fotogrammetrico è stato particolarmente utile per “trasferire” virtualmente, mediante riproduzione, elementi archeologici non trasportabili (si pensi, ad esempio, ad una casa pompeiana oppure a monumenti come l’Ara Pacis) o difficilmente trasportabili (come affreschi) per la fruizione del bene da pa...
Article
Archival multi-temporal aerial photogrammetry allows to measure displacements of a landslide area when images are co-registered in the same reference system. In this paper we investigated three photogrammetric surveys performed in 1998, 2004 and 2007 in an area of the northern Apennine (Bologna). The study of morphological changes was carried out m...
Article
L’esigenza di ampliare la conoscenza dell’abitato di Festòs attraverso l’indagine, in senso diacronico, delle forme di occupazione e dello sviluppo urbano, ha indotto la Scuola Archeologica Italiana di Atene ad avviare, nell’estate del 2007, una synergasia italo-greca nella consapevolezza che solo un reciproco scambio di informazioni e una stretta...
Chapter
In questo lavoro le differenti metodologie di rilievo, laser scanning, fotogrammetriche, topografiche classiche e termografiche, vengono integrate allo scopo di ottenere informazioni geometriche, radiometriche e termiche dell’edificio Donghi oggetto del rilievo.
Article
In questo articolo vengono presentati i risultati del rilievo tridimensionale dell’Arca Scaligera di Cansignorio, effettuato integrando differenti metodologie di rilievo: quella topografica classica, la scansione laser, la fotogrammetria digitale metrica e la tecnica della fotografia panoramica. In questo modo è possibile ottenere informazioni ad a...
Chapter
In questo lavoro vengono presentate due applicazioni che si riferiscono al rilievo 3D di altrettanti edifici residenziali medievali a Padova: l’edificio sito tra via S. Lucia, via Boccalerie e via Pietro D’Abano e la Torre degli Anziani per i quali sono state utilizzate le metodologie laser scanning terrestri; un’altra applicazione, effettuata util...
Article
Full-text available
The results of a comparison of the spirit levelling data made by I.G.M. in 1967 and in 1970, are presented. An analysis of these data shows that the altitude variations of bench marks in the considered triennial period seem to originate from the collective rotation of an inclined plane, which intersects the geoid surface with an azimuth of 43° to t...
Chapter
3D high resolution survey is now performed mainly with photogrammetry and laser scanning methodologies providing very dense and accurate point clouds. Alignment of all acquired points in a defined reference system generates a metrically correct 3D model of the objects. Photographic information can be associated to the model too. Terrestrial applica...
Article
The proposed injection of seawater in a brackish, sandy aquifer lying 600–800 m under the lagoon of Venice to lift Venice itself uniformly up to 30 cm in 10 years raises many problems. We discuss here whether a smooth uplift can be obtained as claimed by the proponents. We first underline the similarities between the Ravenna and Venice case. We the...
Article
Full-text available
Laser scanning methodology allows to reconstruct the metric characteristics of objects at different LOD (Level Of Detail) providing spatially dense points clouds. In particular, the terrestrial application carried out in the last years have demonstrated the potentialities of the methodology useful in many different sectors. This tecnique has been u...
Article
Terrestrial methodologies, as high resolution laser scanning and digital photogrammetry, are used in many applications in the field of architectural and cultural heritage surveys: they are characterized by different operative procedures and precisions. Data deriving from acquisition of an architectural surface, “morphologically complex” but geometr...
Article
Full-text available
This paper concerns computer applications for the management of archaeological data through GIS software, as related to the 2008 excavation campaign at “Mura Bastia”, Onigo (Treviso), Italy. The approach allows for the correlation of data previously acquired with those collected more recently using newer technologies. The shift from the traditional...
Article
Full-text available
Actually scientific research in the human disciplines has been looking with growing interest towards virtual reconstruction of cultural heritage objects and handiworks, and in particular towards those which are dismembered or broken, with the specific aim of virtual anastylosis and virtual conservation of them. In this paper, we present the virtual...
Article
The paper presents the results of the ongoing research coordinated by the Chair of Ancient Topography, University of Padova. The work concerns the medieval site of “Mura della Bastia” in Onigo di Pederobba (Treviso), in the North-Eastern part of Italy. Historical information from written documents and results obtained from the archaeological invest...
Article
Full-text available
RIASSUNTO Problemi attuali nello studio della dinamica del suolo in Alto Adriatico Tra i numerosi problemi legati allo studio della simulazione del movimento del suolo nelle zone costiere dell'Alto Adriatico, nel presente lavoro si trattano, in particolare, due aspetti: il primo riguarda l'acquisizione di dati attendibili riguardanti le variazioni...
Article
The tectonics of the region at the convergence of the Tyrrhenian and Ionian basins is very complicated. The seismicity is particularly interesting in the area 38°–39° 30′N, 14° 30′–16° 30′E, where both deep events occur with compressive mechanism and crustal events with predominant normal faulting in excess of magnitude 7.0. The tectonic origin of...
Article
The aim of this study was to assess, by a digital photogrammetric technique, the relative dimensional changes before and after rapid maxillary expansion (RME). The transverse diameters and volumetric variations of the palate were measured by photogrammetry on study casts taken at three different phases of therapy: at the beginning of treatment (T1)...
Article
Full-text available
Three-dimensional reconstruction of the ground surface (Digital Terrain Model, DTM), derived by airborne GPS photogrammetric surveys, is a powerful tool for implementing morphological analysis in remote areas. High accurate 3D models, with submeter elevation accuracy, can be obtained by images acquired at photo scales between 1:5000-1:20000. Multit...
Article
The paper deals with the behaviour of slopes subjected to increasing loads applied to the soil surface just behind the crest. To this end a new fully-automatic small scale 1 g physical model has been recently built to reproduce a plain-strain state within a granular soil slope. Two relatively new measurement technologies, namely particle image velo...
Conference Paper
Full-text available
In this paper some experiences about the integration of panoramic imaging and terrestrial laser scanning surveys are presented. The main goal is to produce documentation with metric information for the cultural heritage panoramic navigation; furthermore, a subordinate result is to use cheap and user-friendly 3-dimensional images for a wide range of...
Article
MEMORIS (MErcury Moderate Resolution Imaging System) is a wide angle camera (WAC) concept for the ESA mission BepiColombo. The main scientific objectives consist of observing the whole surface of Mercury in the spectral range of 400–1000 nm, with a spatial resolution of 50 m per pixel at peri-Herm (400 km) and 190 m at apo-Herm (1500 km). It will o...
Article
In this paper, the authors present an experiment performed in Padua, Italy to model a cultural heritage object from multiple range views. This object is Porta Portello, an old monumental door near the University, and has been scanned using the laser scanner Cyrax 2500 from Cyra Technologies. A multi-resolution approach was carried out: 1 cm and 2 c...
Article
The use of volumetric targets for the automatic merging and orientation of laser scanner acquisitions has been experimented. The used procedure is fully automatic.
Article
Full-text available
In this paper, the authors present an experiment performed in Padua, Italy to model a cultural heritage object from multiple range views. This object is Porta Portello, an old monumental door near the University, and has been scanned using the laser scanner Cyrax 2500 from Cyra Technologies. A multi-resolution approach was carried out: 1 cm and 2 c...
Article
Full-text available
The use of volumetric targets for the automatic merging and orientation of laser scanner acquisitions has been experimented. The used procedure is fully automatic. The targets can also be used for the orientation of photogrammetric acquisitions, and allow to have a synergic coupling of different kinds of surveying. If a calibration grid is used, th...
Article
Large scale maps and 3D data derived by digital photogrammetric processing have recently demonstrated remarkable potentialities for studies of tectonically and volcanically active regions. By using photogrammetric derived data it is possible to precisely define the geometry and the changes of morphological features of ground surfaces, to identify t...
Article
Full-text available
The terrain deformations in the Neapolitan area of the Phlegrean Fields have been studied by means of SAR interferometry (INSAR). The area, located near Mt.Vesuvius, is subject to strong volcanic ac- tivity, as testified by the continuous alternation of phases of strong uplift with periods of slow sub- sidence. Since 1985 the area is undergoing sub...