Vision-Based Georeferencing of GPR in Urban Areas

Barzaghi, Riccardo; Cazzaniga, N. E.; Pagliari, Diana; Pinto, Livio

doi:10.3390/s16010132

Cited by 10 publications

(7 citation statements)

References 25 publications

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“…From an operational point of view, we set up a first net, composed by two types of targets (rectangular B/W and circular 8 bit), for the facades; a second net, composed by PVC, rectangular (50x50 square centimeters), yellow-black colored, weatherproof targets, was positioned on the ground (Ground Control Points). The first net allowed us to link the point cloud from the photogrammetric survey (obtained from drone and SLR camera) with the point cloud from the laser scanner; the Ground Control Points allowed us to link the photogrammetric survey of roofs with the point cloud from laser scanner and the total point cloud with data from GPS (Barzaghi et al, 2018).…”

Section: The Architectural Surveymentioning

confidence: 99%

Architectural survey, realized with integrated methodology, of the complex of Walser houses in Alagna Valsesia, Italy

Garuglieri¹,

Paola²,

Vecchio³

et al. 2022

Proceedings HERITAGE 2022 - International Conference on Vernacular Heritage: Culture, People and Sustainability

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The subject of this paper is the architectural survey, realized with integrated methodology, of three Walser houses, located in Ronco Superiore, within the Alagna Valsesia (Vercelli, Italy) municipality. The task of surveying the complex was assigned to us by the Superintendence of Archeology, Fine Arts and Landscape for the provinces of Biella, Novara, Verbano-Cusio-Ossola and Vercelli in cooperation with the Regional Secretariat of Piemonte. The aim of the work was that of providing graphic and metric references for the houses, which are a typical example of the rural architecture at the foot of Monte Rosa, to be made available for subsequent interventions of restoration and enhancement. The Superintendence took over the safekeeping of the site from the Public Property in 1998 and, since then, has promoted a process of recovery of the buildings, winning the Europa Nostra Award in 2014. Granting access to visitors has given a larger audience the possibility of knowing the history, the constructive peculiarities and the works of conservation carried out in this area. Specifically, the complex of Walser houses is the most ancient settlement in Alagna, built between the end of XVI century and the beginning of XVII century. Walser houses have a stone basement and wooden roof and walls. The latter are built with the Blockbau technique, i.e. a superimposition of trunks and beams, juxtaposed to shape walls; interlocking connections ensure the rigidity of the structure. First, we have acquired the morphometric characteristics of the buildings; then, we have elaborated them graphically, by employing a georeferenced, 3D laser scanner. Photogrammetric data have, instead, been acquired using digital cameras and drones.

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Section: The Architectural Surveymentioning

confidence: 99%

Architectural survey, realized with integrated methodology, of the complex of Walser houses in Alagna Valsesia, Italy

Garuglieri¹,

Paola²,

Vecchio³

et al. 2022

Proceedings HERITAGE 2022 - International Conference on Vernacular Heritage: Culture, People and Sustainability

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“…These positioning strategies can provide acceptable accuracy in most applications; in some instances where very high precision is required -such as in landmine detection or in high-resolution archaeological studies, other technologies may also be employed. These could include the use of inertial measurement devices (Chicarella et al, 2016;Pasternak, 2014), photogrammetric methods (Barzaghi et al, 2016), and inclinometers (Prokhorenko et al, 2012).…”

Section: Data Acquisitionmentioning

confidence: 99%

The use of 3D ground penetrating radar to mitigate the risk associated with falls of ground in Bushveld Complex platinum mines

Schoor¹,

Nontso²

2019

J. S. Afr. Inst. Min. Metall.

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Some of the recent advances in ground penetrating radar (GPR) technology are discussed in this paper; in particular the move to, and potential value addition offered by, the 3D approach to surveying over the more conventional 2D approach. Case studies at two platinum mines in the Bushveld Complex are used to stress the fact that the niche role for GPR is that of immediate hangingwall assessment, aimed at identifying geological features that could potentially result in falls of ground (FOGs). The paper also highlights the obstacles that still need to be overcome to enable GPR to become a routine tool in local mining operations, and recommendations are offered on how to address these obstacles through ongoing research efforts.

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“…Small, manual construction georadars allow for the detection of installations located in the walls, covered by plaster, to improve the management of usable space in construction objects, also in terms of Building Information Modelling (BIM). Currently, such works are connected with virtual reality that enables the GPR operator to track the hidden infrastructure in real-time against the existing buildings or interior fittings [16].…”

Section: Introductionmentioning

confidence: 99%

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

Karsznia

Onyszko

Borkowska

2021

Sensors

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Applying georadar (GPR) technology for detecting underground utilities is an important element of the comprehensive assessment of the location and ground infrastructure status. These works are usually connected with the conducted investment processes or serialised inventory of underground fittings. The detection of infrastructure is also crucial in implementing the BIM technology, 3D cadastre, and planned network modernization works. GPR detection accuracy depends on the type of equipment used, the selected detection method, and external factors. The multitude of techniques used for localizing underground utilities and constantly growing accuracy demands resulting from the fact that it is often necessary to detect infrastructure under challenging conditions of dense urban development leads to the need to improve the existing technologies. The factor that motivated us to start research on assessing the precision and accuracy of ground penetrating radar detection was the need to ensure the appropriate accuracy, precision, and reliability of detecting underground utilities versus different methods and analyses. The results of the multi-variant GPR were subjected to statistical testing. Various analyses were also conducted, depending on the detection method and on the current soil parameters using a unique sensor probe. When planning detection routes, we took into account regular, established grids and tracked the trajectory of movement of the equipment using GNSS receivers (internal and external ones). Moreover, a specialist probe was used to evaluate the potential influence of the changing soil conditions on the obtained detection results. Our tests were conducted in a developed area for ten months. The results confirmed a strong correlation between the obtained accuracy and the measurement method used, while the correlation with the other factors discussed here was significantly weaker.

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Vision-Based Georeferencing of GPR in Urban Areas

Cited by 10 publications

References 25 publications

Architectural survey, realized with integrated methodology, of the complex of Walser houses in Alagna Valsesia, Italy

Architectural survey, realized with integrated methodology, of the complex of Walser houses in Alagna Valsesia, Italy

The use of 3D ground penetrating radar to mitigate the risk associated with falls of ground in Bushveld Complex platinum mines

Accuracy Tests and Precision Assessment of Localizing Underground Utilities Using GPR Detection

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