Laser scanning methodology which has been used in different sectors, allow surveying an object by... more 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 applications. In this paper, the operations in order to develop the three-dimensional models of the medieval town-walls of Padua and Cittadella (Padua) are described and analyzed. The accurate geometric information extracted was used in the structural analysis with the aim of the restoration: has been considered the just weight of the walls and the wind action to evaluate the planimetric distribution of structural tensions and to characterize the more critical areas.
Laser scanning methodology allows to reconstruct the metric characteristics of objects at differe... more 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 used also for the "Cavallo ligneo" of the "Palazzo della Ragione" (Padua, Italy) survey providing useful data for the restoration of the wooden horse. Due to the morphologic complexity of the object, some lacunas were created during the points clouds acquisitions: different procedures to filling lacunas were considered and applied providing a complete D model of the wooden statue.
... L'applicazione di metodologie geomatiche, ormai consolidate, ha permesso di progettare i... more ... L'applicazione di metodologie geomatiche, ormai consolidate, ha permesso di progettare il rilievo integrando tecniche ... a disposizione sezioni o piante per le quali ricavare, mediante polilinea, tavole tecniche. ... L'andamento naturale del terreno ed il livello di fondazione portano a ...
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
ABSTRACT Three-dimensional methodologies as Terrestrial Laser Scanning (TLS) and digital photogra... more ABSTRACT 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 represents one of the most important document of the Minoan civilization. Leica HDS2500 Time of Flight laser scanner, Canon EOS 1 DS Mark II digital metric camera and Leica TC2003 total station were used. The aim is to evaluate if data with very different methodologies can be accurately co-registered, integrated and what are the limits of applicability. Results show the co-registration of data (average differences in the order of some centimetres) and a better capacity of laser scanning surfaces to describe the corrugated portions of the walls of Phaistos Palace.
Laser scanning methodology which has been used in different sectors, allow surveying an object by... more 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 applications. In this paper, the operations in order to develop the three-dimensional models of the medieval town-walls of Padua and Cittadella (Padua) are described and analyzed. The accurate geometric information extracted was used in the structural analysis with the aim of the restoration: has been considered the just weight of the walls and the wind action to evaluate the planimetric distribution of structural tensions and to characterize the more critical areas.
Laser scanning methodology allows to reconstruct the metric characteristics of objects at differe... more 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 used also for the "Cavallo ligneo" of the "Palazzo della Ragione" (Padua, Italy) survey providing useful data for the restoration of the wooden horse. Due to the morphologic complexity of the object, some lacunas were created during the points clouds acquisitions: different procedures to filling lacunas were considered and applied providing a complete D model of the wooden statue.
ABSTRACT: Terrestrial methodologies, as high resolution laser scanning and digital photogrammetry... more ABSTRACT: 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 geometrically simple and regular, were used in order to compare different methodologies.
Laser scanning methodology which has been used in different sectors, allow surveying an object by... more 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 applications. In this paper, the operations in order to develop the three-dimensional models of the medieval town-walls of Padua and Cittadella (Padua) are described and analyzed. The accurate geometric information extracted was used in the structural analysis with the aim of the restoration: has been considered the just weight of the walls and the wind action to evaluate the planimetric distribution of structural tensions and to characterize the more critical areas.
Laser scanning methodology allows to reconstruct the metric characteristics of objects at differe... more 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 used also for the "Cavallo ligneo" of the "Palazzo della Ragione" (Padua, Italy) survey providing useful data for the restoration of the wooden horse. Due to the morphologic complexity of the object, some lacunas were created during the points clouds acquisitions: different procedures to filling lacunas were considered and applied providing a complete D model of the wooden statue.
... L'applicazione di metodologie geomatiche, ormai consolidate, ha permesso di progettare i... more ... L'applicazione di metodologie geomatiche, ormai consolidate, ha permesso di progettare il rilievo integrando tecniche ... a disposizione sezioni o piante per le quali ricavare, mediante polilinea, tavole tecniche. ... L'andamento naturale del terreno ed il livello di fondazione portano a ...
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
ABSTRACT Three-dimensional methodologies as Terrestrial Laser Scanning (TLS) and digital photogra... more ABSTRACT 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 represents one of the most important document of the Minoan civilization. Leica HDS2500 Time of Flight laser scanner, Canon EOS 1 DS Mark II digital metric camera and Leica TC2003 total station were used. The aim is to evaluate if data with very different methodologies can be accurately co-registered, integrated and what are the limits of applicability. Results show the co-registration of data (average differences in the order of some centimetres) and a better capacity of laser scanning surfaces to describe the corrugated portions of the walls of Phaistos Palace.
Laser scanning methodology which has been used in different sectors, allow surveying an object by... more 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 applications. In this paper, the operations in order to develop the three-dimensional models of the medieval town-walls of Padua and Cittadella (Padua) are described and analyzed. The accurate geometric information extracted was used in the structural analysis with the aim of the restoration: has been considered the just weight of the walls and the wind action to evaluate the planimetric distribution of structural tensions and to characterize the more critical areas.
Laser scanning methodology allows to reconstruct the metric characteristics of objects at differe... more 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 used also for the "Cavallo ligneo" of the "Palazzo della Ragione" (Padua, Italy) survey providing useful data for the restoration of the wooden horse. Due to the morphologic complexity of the object, some lacunas were created during the points clouds acquisitions: different procedures to filling lacunas were considered and applied providing a complete D model of the wooden statue.
ABSTRACT: Terrestrial methodologies, as high resolution laser scanning and digital photogrammetry... more ABSTRACT: 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 geometrically simple and regular, were used in order to compare different methodologies.
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Papers by D. Bragagnolo