2018
Journal article
Restricted
Foreword to the Special Section on Smart Tools and Applications in Computer Graphics 2017
Giachetti A, Pingi P, Stanco F
Source: COMPUTERS & GRAPHICS, vol. 74, pp. A6-A7
DOI: 10.1016/j.cag.2018.05.009
Metrics:
Giachetti A, Pingi P, Stanco F
Source: COMPUTERS & GRAPHICS, vol. 74, pp. A6-A7
DOI: 10.1016/j.cag.2018.05.009
Metrics:
See at:
Computers & Graphics 
| Computers & Graphics | CNR IRIS | CNR IRIS | www.sciencedirect.com
2007
Conference article
Restricted
Using 3D scanning to monitor wood deformations and to evaluate preservation strategies
Brunetti M, Callieri M, Pizzo B, Montani C, Pingi P, Scopigno R
We present a methodology, based on 3D scanned digital models, for measurement and monitoring wood deformations, caused by weather changes, in the trees of the fossilized Dunarobba forest. The Dunarobba forest, located in the central part of Italy, was discovered recently after some excavations to dig clay for bricks manufacturing. The removal of the clay mass exposed the wood to the weather conditions, initiating a process of degradation. Different conservation methodologies have been proposed and the choice of the best fitting one has to be validated by means of an objective and measurable methodology. Monitoring the geometric variation of the wood trunks trough comparison of periodic 3D scanning campaign will be used to evaluate the current degradation rate and assess the effectiveness of the proposed conservation techniques.Source: PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, vol. O3A. Munich, Germany, 20-22 June 2007
DOI: 10.1117/12.726169
Metrics:
Brunetti M, Callieri M, Pizzo B, Montani C, Pingi P, Scopigno R
We present a methodology, based on 3D scanned digital models, for measurement and monitoring wood deformations, caused by weather changes, in the trees of the fossilized Dunarobba forest. The Dunarobba forest, located in the central part of Italy, was discovered recently after some excavations to dig clay for bricks manufacturing. The removal of the clay mass exposed the wood to the weather conditions, initiating a process of degradation. Different conservation methodologies have been proposed and the choice of the best fitting one has to be validated by means of an objective and measurable methodology. Monitoring the geometric variation of the wood trunks trough comparison of periodic 3D scanning campaign will be used to evaluate the current degradation rate and assess the effectiveness of the proposed conservation techniques.Source: PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING, vol. O3A. Munich, Germany, 20-22 June 2007
DOI: 10.1117/12.726169
Metrics:
2023
Journal article
Restricted
La grotta della Villa medicea dell'Ambrogiana: la documentazione digitale come strumento di conoscenza e accessibilità
Siotto E, Pingi P
This work presents previously unpublished geometric and metric information about the 'cave' at L'Ambrogiana Medici Villa in Montelupo F.no, close to Florence, Italy. This data was obtained through three-dimensional (3D) survey technology and was cross-referenced with acquired images and graphical archival documentation to contextualise and document the original 'cave'. This cave is the sole artificial structure within the Medici gardens, with direct access from the Arno River. Despite its historical significance, it remains inaccessible and has not been comprehensively studied due to modifications made to the Villa over time. In the latter half of the 19th century, the Villa transformed, first into a mental hospital and subsequently into a judicial psychiatric hospital. This designation was discontinued in June 2017. Unfortunately, the reconfiguration into a judicial psychiatric hospital resulted in inappropriate and degrading use of the building, gardens, and the artificial cave. Consequently, they are currently in a state of severe decay and are now at the heart of a significant national redevelopment project.Source: RICERCHE DI STORIA DELL'ARTE, vol. 140 (issue 2), pp. 67-78
DOI: 10.7374/108038
Metrics:
Siotto E, Pingi P
This work presents previously unpublished geometric and metric information about the 'cave' at L'Ambrogiana Medici Villa in Montelupo F.no, close to Florence, Italy. This data was obtained through three-dimensional (3D) survey technology and was cross-referenced with acquired images and graphical archival documentation to contextualise and document the original 'cave'. This cave is the sole artificial structure within the Medici gardens, with direct access from the Arno River. Despite its historical significance, it remains inaccessible and has not been comprehensively studied due to modifications made to the Villa over time. In the latter half of the 19th century, the Villa transformed, first into a mental hospital and subsequently into a judicial psychiatric hospital. This designation was discontinued in June 2017. Unfortunately, the reconfiguration into a judicial psychiatric hospital resulted in inappropriate and degrading use of the building, gardens, and the artificial cave. Consequently, they are currently in a state of severe decay and are now at the heart of a significant national redevelopment project.Source: RICERCHE DI STORIA DELL'ARTE, vol. 140 (issue 2), pp. 67-78
DOI: 10.7374/108038
Metrics:
See at:
CNR IRIS | CNR IRIS | www.rivisteweb.it
2022
Contribution to book
Restricted
Un modello 3D per lo studio ed il monitoraggio
Pingi P., Siotto E.
Il volume presenta le analisi, gli studi e i risultati dell'intervento di conservazione eseguito su La Resurrezione di Piero della Francesca, in particolare il capitolo descrive come attraverso l'analisi di un modello tridimensionale è possibile ottenere informazioni utili per lo studio ed il monitoraggio di un affresco.Source: PROBLEMI DI CONSERVAZIONE E RESTAURO, pp. 243-245
Pingi P., Siotto E.
Il volume presenta le analisi, gli studi e i risultati dell'intervento di conservazione eseguito su La Resurrezione di Piero della Francesca, in particolare il capitolo descrive come attraverso l'analisi di un modello tridimensionale è possibile ottenere informazioni utili per lo studio ed il monitoraggio di un affresco.Source: PROBLEMI DI CONSERVAZIONE E RESTAURO, pp. 243-245
2001
Journal article
Restricted
A low cost 3D scanner based on structured light
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
Automatic 3D acquisition devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. We have experimented this technology in a particular application context: the acquisition of Cultural Heritage artefacts. Specific needs of this domain are: medium-high accuracy, easy of use, affordable cost of the scanning device, self-registered acquisition of shape and color data, and finally operational safety for both the operator and the scanned artefacts. According to these requirements, we designed a low-cost 3D scanner based on structured light which adopts a new, versatile colored stripe pattern approach. We present the scanner architecture, the software technologies adopted, and the first results of its use in a project regarding the 3D acquisition of an archeological statueSource: COMPUTER GRAPHICS FORUM (PRINT), vol. 20 (issue 3), pp. 299-308
DOI: 10.1111/1467-8659.00522
Metrics:
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
Automatic 3D acquisition devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. We have experimented this technology in a particular application context: the acquisition of Cultural Heritage artefacts. Specific needs of this domain are: medium-high accuracy, easy of use, affordable cost of the scanning device, self-registered acquisition of shape and color data, and finally operational safety for both the operator and the scanned artefacts. According to these requirements, we designed a low-cost 3D scanner based on structured light which adopts a new, versatile colored stripe pattern approach. We present the scanner architecture, the software technologies adopted, and the first results of its use in a project regarding the 3D acquisition of an archeological statueSource: COMPUTER GRAPHICS FORUM (PRINT), vol. 20 (issue 3), pp. 299-308
DOI: 10.1111/1467-8659.00522
Metrics:
See at:
Computer Graphics Forum | CNR IRIS | CNR IRIS | www.scopus.com
2002
Journal article
Open Access
An end-to-end software suite for 3D scanning
Callieri M, Cignoni P, Pingi P
The Visual Computing Group of IEI-CNR, Pisa, has developed a suite of software procedures for the processing of 3D scanning data. The software package can be used for the automatic acquisition of 3D Cultural Heritage and for the creation of realistic 3D digital models.Source: ERCIM NEWS, vol. 50, pp. 46-47
Callieri M, Cignoni P, Pingi P
The Visual Computing Group of IEI-CNR, Pisa, has developed a suite of software procedures for the processing of 3D scanning data. The software package can be used for the automatic acquisition of 3D Cultural Heritage and for the creation of realistic 3D digital models.Source: ERCIM NEWS, vol. 50, pp. 46-47
2003
Journal article
Open Access
A machine vision system controlling the cutting of animal hide
Fantini E, Ganovelli F, Pingi P
Based on the integration of image acquisition techniques and real-time systems, an innovative system for cutting raw hides has been developed at ISTI-CNR. The aim is to partly automate the cutting process, so that minimal human intervention is needed. The current procedure for cutting animal hide is completely manual. The hide is spread out on a bench and expert operators decide the best cutting lines on the basis of the location of specific features. The hide is then manually cut using ad hoc knives and the parts are removed from the bench. The work of cutting the hide is the most time consuming step, and requires three or four workers.Source: ERCIM NEWS, vol. 55, pp. 32-33
Fantini E, Ganovelli F, Pingi P
Based on the integration of image acquisition techniques and real-time systems, an innovative system for cutting raw hides has been developed at ISTI-CNR. The aim is to partly automate the cutting process, so that minimal human intervention is needed. The current procedure for cutting animal hide is completely manual. The hide is spread out on a bench and expert operators decide the best cutting lines on the basis of the location of specific features. The hide is then manually cut using ad hoc knives and the parts are removed from the bench. The work of cutting the hide is the most time consuming step, and requires three or four workers.Source: ERCIM NEWS, vol. 55, pp. 32-33
2003
Conference article
Restricted
Derma: monitoring the evolution of skin lesions with a 3D system
Callieri M, Cignoni P, Pingi P, Scopigno R, Coluccia M, Gaggio G, Romanelli M
We present a new integrated tool, DERMA, which allows to measure and assess the time evolution of chronic wounds. A laser triangulation 3D scanner is used to acquire the wound geometry with high precision and to capture an RGB image aligned to the geometry. DERMA provides a single and uniform interface to: manage patient data, 3D scanning of the lesion region, and to perform different kinds of measurements and comparisons: geometric (on the 3D model) and colorimetric (on the image). All acquired data (3D geometries and images) as well as the measures calculated are stored in a database for monitoring the evolution of the skin lesion over time. The tool, developed in collaboration with dermatologists, is now under field evaluation in two dermatological clinics monitoring the evolution of wounds due to different types of skin diseases.
Callieri M, Cignoni P, Pingi P, Scopigno R, Coluccia M, Gaggio G, Romanelli M
We present a new integrated tool, DERMA, which allows to measure and assess the time evolution of chronic wounds. A laser triangulation 3D scanner is used to acquire the wound geometry with high precision and to capture an RGB image aligned to the geometry. DERMA provides a single and uniform interface to: manage patient data, 3D scanning of the lesion region, and to perform different kinds of measurements and comparisons: geometric (on the 3D model) and colorimetric (on the image). All acquired data (3D geometries and images) as well as the measures calculated are stored in a database for monitoring the evolution of the skin lesion over time. The tool, developed in collaboration with dermatologists, is now under field evaluation in two dermatological clinics monitoring the evolution of wounds due to different types of skin diseases.
See at:
CNR IRIS | CNR IRIS | vcg.isti.cnr.it
2001
Conference article
Open Access
Oggetti artistici tridimensionali e range scanning
Cignoni P, Montani C, Pingi P, Rocchini C, Scopigno R
Il contributo presenta sinteticamente le potenzialità delle tecnologie di acquisizione automatica delle caratteristiche di forma e colore di oggetti tridimensionali (altrimenti dette 3D scanning). Si introducono quindi le specifiche e le funzionalità di alcuni strumenti sviluppati: uno scanner ottico a basso costo e discreta qualità, un insieme di moduli software che permettono di gestire in modo completo e integrato le varie fasi del processo di acquisizione. Tali strumenti sono stati progettati con un preciso orientamento alla loro applicazione nel settore della rappresentazione digitale di Beni Culturali tridimensionali.
Cignoni P, Montani C, Pingi P, Rocchini C, Scopigno R
Il contributo presenta sinteticamente le potenzialità delle tecnologie di acquisizione automatica delle caratteristiche di forma e colore di oggetti tridimensionali (altrimenti dette 3D scanning). Si introducono quindi le specifiche e le funzionalità di alcuni strumenti sviluppati: uno scanner ottico a basso costo e discreta qualità, un insieme di moduli software che permettono di gestire in modo completo e integrato le varie fasi del processo di acquisizione. Tali strumenti sono stati progettati con un preciso orientamento alla loro applicazione nel settore della rappresentazione digitale di Beni Culturali tridimensionali.
2001
Other
Open Access
A low cost optical 3D scanner
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
Automatic 3D acquisition devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. We have experimented this technology in a particular application context: the acquisition of Cultural Heritage artifacts. Specific needs of this domain are: medium-high accuracy, easy of use, affordable cost of the scanning device, self-registered acquisition of shape and color data, and finally operational safety for both the operator and the scanned artifacts. According to these requirements, we designed a low-cost 3D scanner based on structured light which adopts a new, versatile colored stripe pattern approach. We present the scanner architecture, the software technologies adopted, and the first results of its use in a project regarding the 3D acquisition of an archeological statue.
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
Automatic 3D acquisition devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. We have experimented this technology in a particular application context: the acquisition of Cultural Heritage artifacts. Specific needs of this domain are: medium-high accuracy, easy of use, affordable cost of the scanning device, self-registered acquisition of shape and color data, and finally operational safety for both the operator and the scanned artifacts. According to these requirements, we designed a low-cost 3D scanner based on structured light which adopts a new, versatile colored stripe pattern approach. We present the scanner architecture, the software technologies adopted, and the first results of its use in a project regarding the 3D acquisition of an archeological statue.
2004
Other
Open Access
Automatic coarse registration of range maps
Fasano A., Pingi P., Cignoni P., Montani C., Scopigno R.
Range map registration is still the most time consuming phase in 3D scanning. This is because real scanning set are composed of hundreds of range maps and their registration is still partially manual. We propose a new method which allows to manage complex scan sets acquired by following a regular scanner pose pattern. The method makes proficient use of some initial considerations and auxiliary data structures, which allow to simplify the range map registration problem. It is designed as an iterative solution, where pairs of correspondent vertices are selected through the computation of a regular n * n kernel which takes into account vertex normals and is defined in the 2D space of the range map (represented in implicit 2D format rather than as a triangle mesh in 3D space). The shape-characterization kernel and the metrics defined give a sufficiently accurate shape matching, which has been proven to fit well the requirements of automatic registration. The solution proposed has been tested on a number of complex scanning set and results are impressively better than previous solutions.
Fasano A., Pingi P., Cignoni P., Montani C., Scopigno R.
Range map registration is still the most time consuming phase in 3D scanning. This is because real scanning set are composed of hundreds of range maps and their registration is still partially manual. We propose a new method which allows to manage complex scan sets acquired by following a regular scanner pose pattern. The method makes proficient use of some initial considerations and auxiliary data structures, which allow to simplify the range map registration problem. It is designed as an iterative solution, where pairs of correspondent vertices are selected through the computation of a regular n * n kernel which takes into account vertex normals and is defined in the 2D space of the range map (represented in implicit 2D format rather than as a triangle mesh in 3D space). The shape-characterization kernel and the metrics defined give a sufficiently accurate shape matching, which has been proven to fit well the requirements of automatic registration. The solution proposed has been tested on a number of complex scanning set and results are impressively better than previous solutions.
See at:
CNR IRIS 
| ISTI Repository | CNR IRIS
2005
Journal article
Restricted
Exploiting the scanning sequence for automatic registration of large sets of range maps
Pingi P, Fasano A, Cignoni P, Montani C, Scopigno R
Range map registration is still the most time consuming phase in the processing of 3D scanning data. This is because real scanning sets are composed of hundreds of range maps and their registration is still partially manual. We propose a new method to manage complex scan sets acquired by following a regular scanner pose pattern. Our goal is to define an initial adjacency graph by coarsely aligning couples of range maps that we know are partially overlapping thanks to the adopted scanning strategy. For a pair of partially overlapping range maps, our iterative solution locates pairs of correspondent vertices through the computation of a regular n×n kernel which takes into account vertex normals and is defined in the 2D space of the range map (represented in implicit 2D format rather than as a triangle mesh in 3D space). The shape-characterization kernel and the metrics defined give a sufficiently accurate shape matching, which has been proven to fit well the requirements of automatic registration. This initial set of adjacency arcs can then be augmented by the automatic identification of the other significant arcs, by adopting a criterion based on approximate range map overlap computation. With respect to the solutions present in literature, the simplifications and assumptions adopted make our solution specifically oriented to complex 3D scanning campaigns (hundreds of range maps). The proposed method can coarsely register range maps in parallel with the acquisition activity and this is a valuable help in assessing on site the completeness of the sampling of large objects.Source: COMPUTER GRAPHICS FORUM (PRINT), vol. 24 (issue 3), pp. 517-526
DOI: 10.1111/j.1467-8659.2005.00877.x
Metrics:
Pingi P, Fasano A, Cignoni P, Montani C, Scopigno R
Range map registration is still the most time consuming phase in the processing of 3D scanning data. This is because real scanning sets are composed of hundreds of range maps and their registration is still partially manual. We propose a new method to manage complex scan sets acquired by following a regular scanner pose pattern. Our goal is to define an initial adjacency graph by coarsely aligning couples of range maps that we know are partially overlapping thanks to the adopted scanning strategy. For a pair of partially overlapping range maps, our iterative solution locates pairs of correspondent vertices through the computation of a regular n×n kernel which takes into account vertex normals and is defined in the 2D space of the range map (represented in implicit 2D format rather than as a triangle mesh in 3D space). The shape-characterization kernel and the metrics defined give a sufficiently accurate shape matching, which has been proven to fit well the requirements of automatic registration. This initial set of adjacency arcs can then be augmented by the automatic identification of the other significant arcs, by adopting a criterion based on approximate range map overlap computation. With respect to the solutions present in literature, the simplifications and assumptions adopted make our solution specifically oriented to complex 3D scanning campaigns (hundreds of range maps). The proposed method can coarsely register range maps in parallel with the acquisition activity and this is a valuable help in assessing on site the completeness of the sampling of large objects.Source: COMPUTER GRAPHICS FORUM (PRINT), vol. 24 (issue 3), pp. 517-526
DOI: 10.1111/j.1467-8659.2005.00877.x
Metrics:
See at:
Computer Graphics Forum | CNR IRIS | CNR IRIS
2001
Conference article
Restricted
A suite of tools for the management of 3D scanned data
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
In this paper we describe a 3D scanning software suite which gives support to most of the processing phases of a complex 3D scanning project. In particular, our tools support: range maps alignment, range maps merge, mesh editing and mesh simplification. The software suite has been implemented by scratch and encompasses both up-to-date solutions (alignment, editing) and some original methods (merging, simplification, and, in part, alignment). The architecture of the software suite is described and an evaluation of its use in the framework of a complex acquisition in the Cultural Heritage domain (3D scanning of a bronze statue) is reported
Rocchini C, Cignoni P, Montani C, Pingi P, Scopigno R
In this paper we describe a 3D scanning software suite which gives support to most of the processing phases of a complex 3D scanning project. In particular, our tools support: range maps alignment, range maps merge, mesh editing and mesh simplification. The software suite has been implemented by scratch and encompasses both up-to-date solutions (alignment, editing) and some original methods (merging, simplification, and, in part, alignment). The architecture of the software suite is described and an evaluation of its use in the framework of a complex acquisition in the Cultural Heritage domain (3D scanning of a bronze statue) is reported
2014
Contribution to book
Restricted
Dallo stato di rudere alla realtà virtuale
Pingi P, Siotto E, Callieri M, Ferrara A, Scopigno R
The chapter of the book "La Badia Camaldolese Volterra" reports the results obtained to the knowledge of preservation history of the Abbey church, through a deepening and integration of different knowledge fields. For this purpose, we have been used different data acquisition procedures, which have been specifically chosen to the investigated ancient building. They are supported through the study of historical and architectural features of the structure. This knowledge process was followed by a data processing step in order to manage and visualize the achieved results.DOI: 10.4399/97888548795537
Metrics:
Pingi P, Siotto E, Callieri M, Ferrara A, Scopigno R
The chapter of the book "La Badia Camaldolese Volterra" reports the results obtained to the knowledge of preservation history of the Abbey church, through a deepening and integration of different knowledge fields. For this purpose, we have been used different data acquisition procedures, which have been specifically chosen to the investigated ancient building. They are supported through the study of historical and architectural features of the structure. This knowledge process was followed by a data processing step in order to manage and visualize the achieved results.DOI: 10.4399/97888548795537
Metrics:
See at:
bozze.aracneeditrice.it | CNR IRIS | CNR IRIS
2015
Journal article
Restricted
Fast and simple automatic alignment of large sets of range maps
Pingi P, Corsini M, Ganovelli F, Scopigno R
We present a very fast and simple-to-implement algorithm for the automatic registration of a large number of range maps. The proposed algorithm exploits a compact and GPU-friendly descriptor specifically designed for the alignment of this type of data. This pairwise registration algorithm, which also includes a simple mechanism to avoid to get false positives, is part of a system capable to align a sequence of up to hundreds of range maps in few minutes. In order to reduce the number of pairs to align in the case of unordered range maps we use a prioritization strategy based on the fast computation of the correlation between range maps through FFT. The proposed system does not need any user input and it was tested successfully on a large variety of datasets coming from real acquisition campaigns.Source: COMPUTERS & GRAPHICS, vol. 47, pp. 78-88
DOI: 10.1016/j.cag.2014.12.002
Project(s): HARVEST4D
Metrics:
Pingi P, Corsini M, Ganovelli F, Scopigno R
We present a very fast and simple-to-implement algorithm for the automatic registration of a large number of range maps. The proposed algorithm exploits a compact and GPU-friendly descriptor specifically designed for the alignment of this type of data. This pairwise registration algorithm, which also includes a simple mechanism to avoid to get false positives, is part of a system capable to align a sequence of up to hundreds of range maps in few minutes. In order to reduce the number of pairs to align in the case of unordered range maps we use a prioritization strategy based on the fast computation of the correlation between range maps through FFT. The proposed system does not need any user input and it was tested successfully on a large variety of datasets coming from real acquisition campaigns.Source: COMPUTERS & GRAPHICS, vol. 47, pp. 78-88
DOI: 10.1016/j.cag.2014.12.002
Project(s): HARVEST4D
Metrics:
See at:
Computers & Graphics | CNR IRIS | CNR IRIS | CNR IRIS | www.sciencedirect.com
2014
Conference article
Open Access
From the archival documentation to standardised web database and 3D models: the case study of the Camaldolese Abbey in Volterra (Italy)
Siotto E, Callieri M, Pingi P, Scopigno R, Benassi L, Parri A, La Monica D, Ferrara A
Our age is characterized by the ease of communication and fast and free exchange of data. The use of standards and a common approach to recollect, organize and present the documentation gives a great advantage for the knowledge and dissemination of the archaeological, artistic, historical and conservation information of Cultural Heritage. Establishing a "correct" documentation policy is the main goal that guided our initiative for the documentation, preservation and valorisation of the monumental complex of the Camaldolese Abbey in Tuscany. In this project we retrieved the paper documentation in the Historical Archives of the Tuscany Region, to study the historical and conservation data of the monumental complex. Digital technologies have been used to support storing and access to this important information, including also data to monitor the current state of its preservation. The documentation has been digitized and is accessible through a web database; this resource was designed by following the Italian National standards proposed by Central Institute for Cataloguing and Documentation (ICCD). The current state of conservation of some parts of the building has been documented by taking panoramic images or panoramas (360o images) and by the acquiring 3D digital models. In particular, panoramas are used to document the state of preservation of frescoed rooms, while geometric 3D models are produced to document the degraded areas of the church, which require a constant monitoring. Moreover, an analytical virtual reconstruction of the church was modeled to depict its status before the building's collapse. The main goals of this work are to provide a good-practice example on how to document and disseminate on the web the knowledge available on an endangered monument, following national and international standards, in order to make the knowledge widely accessible. In this way, it is possible to disseminate and enhance the old results with new analysis and interpretations of documents that can be easily shared with other researches, conservation experts and the ordinary public.
Siotto E, Callieri M, Pingi P, Scopigno R, Benassi L, Parri A, La Monica D, Ferrara A
Our age is characterized by the ease of communication and fast and free exchange of data. The use of standards and a common approach to recollect, organize and present the documentation gives a great advantage for the knowledge and dissemination of the archaeological, artistic, historical and conservation information of Cultural Heritage. Establishing a "correct" documentation policy is the main goal that guided our initiative for the documentation, preservation and valorisation of the monumental complex of the Camaldolese Abbey in Tuscany. In this project we retrieved the paper documentation in the Historical Archives of the Tuscany Region, to study the historical and conservation data of the monumental complex. Digital technologies have been used to support storing and access to this important information, including also data to monitor the current state of its preservation. The documentation has been digitized and is accessible through a web database; this resource was designed by following the Italian National standards proposed by Central Institute for Cataloguing and Documentation (ICCD). The current state of conservation of some parts of the building has been documented by taking panoramic images or panoramas (360o images) and by the acquiring 3D digital models. In particular, panoramas are used to document the state of preservation of frescoed rooms, while geometric 3D models are produced to document the degraded areas of the church, which require a constant monitoring. Moreover, an analytical virtual reconstruction of the church was modeled to depict its status before the building's collapse. The main goals of this work are to provide a good-practice example on how to document and disseminate on the web the knowledge available on an endangered monument, following national and international standards, in order to make the knowledge widely accessible. In this way, it is possible to disseminate and enhance the old results with new analysis and interpretations of documents that can be easily shared with other researches, conservation experts and the ordinary public.
See at:
CNR IRIS | www.chnt.at | CNR IRIS
2015
Conference article
Open Access
VirtualTour: a system for exploring cultural heritage sites in an immersive way
Malomo L, Banterle F, Pingi P, Gabellone F, Scopigno R
In the last few years, mobile or wearable virtual reality has gained new interest amongst the industry and researchers. The rapid development of new technologies such as high quality head mounted displays, accurate and cheap motion sensors (e.g. accelerometers, gyroscopes, depth cameras, etc.), localization sensors (e.g. GPS, compass, etc.) etc. have led to new opportunities that just a few years ago were not possible to achieve with off-the-shelf components. This renaissance of virtual reality is happening in both research and practical applications, such as computer games, movies, documentaries, learning, urban planning, etc. In this work we propose a system, VirtualTour, offering virtual exploration of Cultural Heritage (CH) sites on mobile devices based on a natural interaction approach; a few easy to understand (and to be tracked) actions performed by the user in the real world are translated into navigation instructions in the virtual world. To achieve this goal, we have exploited embedded sensors and the fast hardware of modern mobile devices.DOI: 10.1109/digitalheritage.2015.7413889
Project(s): VASCO
Metrics:
Malomo L, Banterle F, Pingi P, Gabellone F, Scopigno R
In the last few years, mobile or wearable virtual reality has gained new interest amongst the industry and researchers. The rapid development of new technologies such as high quality head mounted displays, accurate and cheap motion sensors (e.g. accelerometers, gyroscopes, depth cameras, etc.), localization sensors (e.g. GPS, compass, etc.) etc. have led to new opportunities that just a few years ago were not possible to achieve with off-the-shelf components. This renaissance of virtual reality is happening in both research and practical applications, such as computer games, movies, documentaries, learning, urban planning, etc. In this work we propose a system, VirtualTour, offering virtual exploration of Cultural Heritage (CH) sites on mobile devices based on a natural interaction approach; a few easy to understand (and to be tracked) actions performed by the user in the real world are translated into navigation instructions in the virtual world. To achieve this goal, we have exploited embedded sensors and the fast hardware of modern mobile devices.DOI: 10.1109/digitalheritage.2015.7413889
Project(s): VASCO
Metrics:
See at:
CNR IRIS | ieeexplore.ieee.org | doi.org | CNR IRIS
2017
Contribution to book
Restricted
Documentazione e analisi delle deformazioni del supporto ligneo e della superficie pittorica mediante rilievo 3D
Pingi P, Siotto E, Palma G, Scopigno R
Un dipinto su tela o su tavola, contrariamente a quanto si potrebbe pensare, non è un oggetto con una superficie perfettamente planare, ma è caratterizzato da una complessa tridimensionalità. Il colore che l'artista pone sul supporto ha una propria corposità materica, uno spessore, che, seppur millimetrico o sub-millimetrico, può essere rilevato con strumenti e applicativi di misurazione tridimensionale (3D). Allo stesso tempo, il supporto ligneo può presentare deformazioni legate a vicissitudini storiche e conservative, che possono essere facilmente rilevate e documentate. Nella fase di analisi di un'opera soggetta ad un importante intervento di restauro, come è avvenuto per l'Adorazione dei Magi di Leonardo da Vinci, un'accurata documentazione 3D della superficie pittorica è pertanto strettamente legata a quella del suo supporto ligneo. Pertanto, una scrupolosa acquisizione geometrica 3D del tavolato e dei suoi elementi di collegamento (farfalle e cavicchi) e di sostegno (traverse) può fornire elementi utili non solo per una maggiore conoscenza della fattura dell'opera e del suo stato di conservazione, ma anche per un suo monitoraggio nel corso del tempo o in fase di restauro. Inoltre, un uso appropriato delle moderne tecnologie di Computer Grafica 3D non rappresenta soltanto un valido ausilio diagnostico per la conoscenza dell'opera, ma anche un mezzo per raccogliere informazioni di carattere scientifico-divulgativo (ad esempio dati storico-artistici, tecnici, risultati di analisi chimico-fisiche) e renderle facilmente fruibili on-line agli addetti del settore e ad un pubblico più vasto, grazie a sistemi multimediali appositamente sviluppati. Nel caso del capolavoro non concluso di Leonardo, una sua completa acquisizione 3D ad alta risoluzione è stata eseguita con lo scopo di evidenziare e misurare - in fase di restauro pittorico - una mappa di deviazioni della planarità causata dalla curvatura e deformazione delle tavole lignee, consentendo di documentare la deformazione spaziale subìta dalla pittura e monitorare il suo stato di conservazione.
Pingi P, Siotto E, Palma G, Scopigno R
Un dipinto su tela o su tavola, contrariamente a quanto si potrebbe pensare, non è un oggetto con una superficie perfettamente planare, ma è caratterizzato da una complessa tridimensionalità. Il colore che l'artista pone sul supporto ha una propria corposità materica, uno spessore, che, seppur millimetrico o sub-millimetrico, può essere rilevato con strumenti e applicativi di misurazione tridimensionale (3D). Allo stesso tempo, il supporto ligneo può presentare deformazioni legate a vicissitudini storiche e conservative, che possono essere facilmente rilevate e documentate. Nella fase di analisi di un'opera soggetta ad un importante intervento di restauro, come è avvenuto per l'Adorazione dei Magi di Leonardo da Vinci, un'accurata documentazione 3D della superficie pittorica è pertanto strettamente legata a quella del suo supporto ligneo. Pertanto, una scrupolosa acquisizione geometrica 3D del tavolato e dei suoi elementi di collegamento (farfalle e cavicchi) e di sostegno (traverse) può fornire elementi utili non solo per una maggiore conoscenza della fattura dell'opera e del suo stato di conservazione, ma anche per un suo monitoraggio nel corso del tempo o in fase di restauro. Inoltre, un uso appropriato delle moderne tecnologie di Computer Grafica 3D non rappresenta soltanto un valido ausilio diagnostico per la conoscenza dell'opera, ma anche un mezzo per raccogliere informazioni di carattere scientifico-divulgativo (ad esempio dati storico-artistici, tecnici, risultati di analisi chimico-fisiche) e renderle facilmente fruibili on-line agli addetti del settore e ad un pubblico più vasto, grazie a sistemi multimediali appositamente sviluppati. Nel caso del capolavoro non concluso di Leonardo, una sua completa acquisizione 3D ad alta risoluzione è stata eseguita con lo scopo di evidenziare e misurare - in fase di restauro pittorico - una mappa di deviazioni della planarità causata dalla curvatura e deformazione delle tavole lignee, consentendo di documentare la deformazione spaziale subìta dalla pittura e monitorare il suo stato di conservazione.
2000
Conference article
Open Access
3d scanning and rendering cultural heritage artifacts on a low budget.
Scopigno R, Pingi P, Rocchini C, Cignoni P, Montani C
The recent evolution of graphics technology has been impressive, and the management of very complex models is now possible on inexpensive platforms. Moreover, automatic scanning devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. This paper discusses some issues in the use of this technology by taking into account a particular application context: the acquisition of Cultural Heritage artifacts. Specific needs of this domain are: a high accuracy, a lower cost of the scanning devices and an improved usability of the data produced. We will present the results of two projects, aimed at: the design of a low-cost scanner based on structured light; the design of a data simplification tool which enables complex dataset visualization on low cost computers.
Scopigno R, Pingi P, Rocchini C, Cignoni P, Montani C
The recent evolution of graphics technology has been impressive, and the management of very complex models is now possible on inexpensive platforms. Moreover, automatic scanning devices (often called 3D scanners) allow to build highly accurate models of real 3D objects in a cost- and time-effective manner. This paper discusses some issues in the use of this technology by taking into account a particular application context: the acquisition of Cultural Heritage artifacts. Specific needs of this domain are: a high accuracy, a lower cost of the scanning devices and an improved usability of the data produced. We will present the results of two projects, aimed at: the design of a low-cost scanner based on structured light; the design of a data simplification tool which enables complex dataset visualization on low cost computers.
2019
Journal article
Open Access
Deformation analysis of Leonardo da Vinci's "Adorazione dei Magi" through temporal unrelated 3D digitization
Palma G, Pingi P, Siotto E, Bellucci R, Guidi G, Scopigno R
3D scanning is an effective technology for dealing at different levels the state of conservation/deformation of a panel painting, from the micro-geometry of the craquelure to the macro-geometry of the supported used. Unfortunately, the current solutions used to analyze multiple 3D scans acquired over time are based on very controlled acquisition procedures, such as the use of target reference points that are stationary over time and fixed to the artwork, or on complex hardware setups to keep the acquisition device fixed to the artwork. These procedures are challenging when a long monitoring period is involved or during restoration when the painting may be moved several times. This paper presents a new and robust approach to observe and quantify the panel deformations of artworks by comparing 3D models acquired with different scanning devices at different times. The procedure is based on a non-rigid registration algorithm that deforms one 3D model over the other in a controlled way, extracting the real deformation field. We apply the method to the 3D scanning data of the unfinished panel painting "Adorazione dei Magi" by Leonardo da Vinci. The data were acquired in 2002 and 2015. First, we analyze the two 3D models with the classical distance from the ideal flat plane of the painting. Then we study the type of deformation of each plank of the support by fitting a quadric surface. Finally, we compare the models before and after the deformation computed by a non-rigid registration algorithm. This last comparison enables the panel deformation to be separated from the structural changes (e.g. the structural restorations on the back and the missing pieces) of the artwork in a more robust way.Source: JOURNAL OF CULTURAL HERITAGE, vol. 38, pp. 174-185
DOI: 10.1016/j.culher.2018.11.001
Metrics:
Palma G, Pingi P, Siotto E, Bellucci R, Guidi G, Scopigno R
3D scanning is an effective technology for dealing at different levels the state of conservation/deformation of a panel painting, from the micro-geometry of the craquelure to the macro-geometry of the supported used. Unfortunately, the current solutions used to analyze multiple 3D scans acquired over time are based on very controlled acquisition procedures, such as the use of target reference points that are stationary over time and fixed to the artwork, or on complex hardware setups to keep the acquisition device fixed to the artwork. These procedures are challenging when a long monitoring period is involved or during restoration when the painting may be moved several times. This paper presents a new and robust approach to observe and quantify the panel deformations of artworks by comparing 3D models acquired with different scanning devices at different times. The procedure is based on a non-rigid registration algorithm that deforms one 3D model over the other in a controlled way, extracting the real deformation field. We apply the method to the 3D scanning data of the unfinished panel painting "Adorazione dei Magi" by Leonardo da Vinci. The data were acquired in 2002 and 2015. First, we analyze the two 3D models with the classical distance from the ideal flat plane of the painting. Then we study the type of deformation of each plank of the support by fitting a quadric surface. Finally, we compare the models before and after the deformation computed by a non-rigid registration algorithm. This last comparison enables the panel deformation to be separated from the structural changes (e.g. the structural restorations on the back and the missing pieces) of the artwork in a more robust way.Source: JOURNAL OF CULTURAL HERITAGE, vol. 38, pp. 174-185
DOI: 10.1016/j.culher.2018.11.001
Metrics:
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