The 3d Survey of the Roman Bridge of San Lorenzo in Padova (Italy): A Comparison Between SFM and TLS Methodologies Applied to the Arch Structure

Carraro, Filippo; Monego, Michele; Callegaro, Chiara; Mazzariol, Alessandro; Perticarini, Maurizio; Menin, Andrea; Achilli, Vladimiro; Bonetto, Jacopo; Giordano, Andrea

doi:10.5194/isprs-archives-xlii-2-w15-255-2019

Cited by 17 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the comparisons between models acquired at different times, to reduce the influence of the georeferencing The first and the last scans were compared to detect displacements of cracks affecting the structures (Figure 11). The M3C2 plugin tool of the software Cloud Compare allowed to perform the computation of distances between two point clouds, considering some input parameters about the density of core points and volume in which the homolog points for the distance calculation are identified [45]. The results, highlighted by the color scale, show that the fractures seem to remain stable or the deformation is too small to be observed with the TLS approach.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Combining Sentinel-1 Interferometry and Ground-Based Geomatics Techniques for Monitoring Buildings Affected by Mass Movements

et al. 2021

View full text Add to dashboard Cite

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 destruction. Synthetic aperture radar (SAR) data acquired by Sentinel-1 satellites and processed by multi-temporal interferometric SAR (MT-InSAR) techniques can measure centimeter to millimeter-level displacement with weekly to monthly updates, characterizing long-term large-scale behavior of the buildings and slopes. However, the spatial resolution and short wavelength weaken the performance of Sentinel-1 in recognizing features (i.e., single buildings) inside image pixels and maintaining the coherence in mountainous vegetated areas. We have proposed and applied a methodology that combines Sentinel-1 interferometry with ground-based geomatics techniques, i.e., global navigation satellite system (GNSS), terrestrial laser scanning (TLS) and terrestrial structure from motion photogrammetry (SfM), for fully assessing building deformations on a slope located in the north-eastern Italian pre-Alps. GNSS allows verifying the ground deformation estimated by MT-InSAR and provides a reference system for the TLS and SfM measurements, while TLS and SfM allow the behavior of buildings located in the investigated slope to be monitored in great detail. The obtained results show that damaged buildings are located in the most unstable sectors of the slope, but there is no direct relationship between the rate of ground deformation of these sectors and the temporal evolution of damages to a single building, indicating that mass movements cause the displacement of blocks of buildings and each of them reacts differently according to its structural properties. This work shows the capability of MT-InSAR, GNSS, TLS and SfM in monitoring both buildings and geological processes that affect their stability, which plays a key role in geohazard analysis and assessment.

show abstract

Section: Resultsmentioning

confidence: 99%

“…danielgm.net/cc/). This is a specific tool that allows to calculate the distance between two 3D entities (cloud-to-cloud, cloud-to-mesh and mesh-to-mesh) [45,46]. To this end, a subset of points (core points) of one of the two point clouds (reference cloud) is considered.…”

Section: Terrestrial Laser Scanning (Tls) and Structure From Motion (Sfm)mentioning

confidence: 99%

Combining Sentinel-1 Interferometry and Ground-Based Geomatics Techniques for Monitoring Buildings Affected by Mass Movements

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A matching distance map (bottom right‐hand image) is a visual representation of the distances between two objects measured in 3D. It can be performed between point clouds, meshes or both on 3D software such as CloudCompare M3C2 plugin (James et al, 2017) or 3DReshaper inspect tool (Carraro et al, 2019). Such matching distance maps can be compared with RMSE measures that help check the quality of fit between surfaces.…”

Section: Methodsmentioning

confidence: 99%

Determining the origin and changing shape of landscape‐scale rock formations with three‐dimensional modelling: The Borologa rock shelters, Kimberley region, Australia

et al. 2021

View full text Add to dashboard Cite

Archaeologists often wonder how and when rock shelters formed, yet their origins and antiquity are almost never systematically investigated. Here we present a new method to determine how and when individual boulders and rock shelters came to lie in their present landscape settings. We do so through 3D laser (LiDAR) mapping, illustrating the method by example of the Borologa Aboriginal site complex in the Kimberley region of northwestern Australia. Through a combination of geomorphological study and high‐resolution 3D modelling, individual blocks of rock are refitted and repositioned t680their originating cliff‐line. Preliminary cosmogenic nuclide ages on exposed vertical cliff faces and associated detached boulders above the Borologa archaeological sites signal very slow detachment rates for the mass movements of large blocks down the Drysdale Valley slopes, suggesting relative landscape stability over hundreds of thousands of years (predating the arrival of people). These findings offer hitherto unknown details of the pace of regional landscape evolution and move us toward a better understanding of patterns of human occupation in a context of relatively stable rock outcrops both within the sites and across the region.

show abstract

“…In this case, the choice of a "light" approach seemed to be an adequate solution in an optic of non-invasive presence in a particular protected site and considering the relation between time of surveying and obtained results (Carraro et al, 2019). An aerial photogrammetric survey with a lightweight drone (Fig.…”

Section: Geomatic Surveymentioning

confidence: 99%

An Integrated Approach Aimed at the Protection of Cultural Heritage: From the Geomatic Survey to Hbim and Ar Representation of Villa Pisani (Stra, Italy)

Salvalaggio

Monego

Maioli

2021

Proceedings ARQUEOLÓGICA 2.0 - 9th International Congress &Amp; 3rd GEORES - GEOmatics and pREServation

View full text Add to dashboard Cite

The topic of Cultural Heritage preservation has gained an increasing attention during last decades. The protection of such complex and delicate manufacts require the intervention of experts from different field (e.g. archaeology, restoration, survey, 3D modeler, structural engineering, architecture), addressed towards an integrated and multidisciplinary scientific approach. Recently, technology advancements have involved many scientific disciplines, affecting both the investigation tools and the data computing. In this paper, an approach aimed at assessing the health status and preserving a heritage building is presented and applied to a case study, exploiting the most effective tools nowadays available. Based on the so-called knowledge path, the study started from the analysis of historical data, through the collection of in-situ measures and towards the construction of a 3D digital model where the information is stored. In particular, a set of images taken by drone and processed by the photogrammetric technique of Structure from Motion, were used to produce detailed point clouds, mesh model, DEM and orthophotos that collect an accurate geometrical documentation, useful to analyse the conservation status and the crack pattern. Based on the detailed model from geomatic survey and drawings, a Heritage Building Information Modelling (HBIM) database was collected with the possibility of managing historical, geometric, structural and health status information. In the end, the study focused on the availability of the information collected for non-professional users or professionals from different fields, who do not have access to data kept in commercial database. Partly, this resulted in the elaboration of an augmented reality (AR) model, accessible by common mobile applications. The case study is Villa Pisani in Stra (Venice, Italy), a well-known example of venetian villa built in the XVIII century which hosted many protagonists of the European contemporary history.

show abstract

The 3d Survey of the Roman Bridge of San Lorenzo in Padova (Italy): A Comparison Between SFM and TLS Methodologies Applied to the Arch Structure

Cited by 17 publications

References 9 publications

Combining Sentinel-1 Interferometry and Ground-Based Geomatics Techniques for Monitoring Buildings Affected by Mass Movements

Combining Sentinel-1 Interferometry and Ground-Based Geomatics Techniques for Monitoring Buildings Affected by Mass Movements

Determining the origin and changing shape of landscape‐scale rock formations with three‐dimensional modelling: The Borologa rock shelters, Kimberley region, Australia

An Integrated Approach Aimed at the Protection of Cultural Heritage: From the Geomatic Survey to Hbim and Ar Representation of Villa Pisani (Stra, Italy)

Contact Info

Product

Resources

About