69 result(s)
Page Size: 10, 20, 50
Export: bibtex, xml, json, csv
Order by:

CNR Author operator: and / or
more
Typology operator: and / or
Language operator: and / or
Date operator: and / or
more
Rights operator: and / or
2021 Contribution to book Restricted

Virtual clones for cultural heritage applications
Potenziani M., Banterle F., Callieri M., Dellepiane M., Ponchio F., Scopigno R.
Digital technologies are now mature for producing high quality digital replicas of Cultural Heritage (CH) artifacts. The research results produced in the last decade have shown an impressive evolution and consolidation of the technologies for acquiring high-quality digital 3D models, encompassing both geometry and color (or, better, surface reflectance properties). Some recent technologies for constructing 3D models enriched by a high-quality encoding of the color attribute will be presented. The focus of this paper is to show and discuss practical solutions, which could be deployed without requiring the installation of a specific or sophisticated acquisition lab setup. In the second part of this paper, we focus on new solutions for the interactive visualization of complex models, adequate for modern communication channels such as the web and the mobile platforms. Together with the algorithms and approaches, we show also some practical examples where high-quality 3D models have been used in CH research, restoration and conservation.Source: From Pen to Pixel - Studies of the Roman Forum and the Digital Future of World Heritage, edited by Fortini Patrizia, Krusche Krupali, pp. 225–233. Roma: L'Erma di Bretschneider, 2021

See at: CNR ExploRA Restricted | www.lerma.it Restricted


2020 Journal article Open Access OPEN

Effective annotations over 3D models
Ponchio F., Callieri M., Dellepiane M., Scopigno R.
Annotation support in interactive systems is often considered a simple task by the CG community, since it entails the apparently easy selection of a region and its connection with some information. The reality appears more complex. The scope of this paper is twofold: first, to review the status of this domain, discussing and characterizing several approaches proposed in literature to manage annotations over geometric models; second, to present in detail an innovative solution proposed and assessed in the framework of Cultural Heritage (CH) applications, called ClippingVolumes. At the annotation definition stage ClippingVolumes uses 3D data to characterize the annotation region; subsequently, annotations are visualized by adopting a two-pass rendering solution which uses stencil buffers, thus without introducing new geometric elements, changing the topology or duplicating geometry elements. It solves most of the issues that afflict the current state of the art, such as fragmentation, annotation transfer to multiple representations, and multi-resolution data encoding. The latter is a mandatory requirement to produce efficient web-based systems. We implemented and we fully tested this approach in the framework of a complex system that supports the documentation of CH restoration projects.Source: Computer graphics forum (Online) 39 (2020): 89–105. doi:10.1111/cgf.13664
DOI: 10.1111/cgf.13664

See at: ISTI Repository Open Access | Computer Graphics Forum Restricted | Computer Graphics Forum Restricted | Computer Graphics Forum Restricted | Computer Graphics Forum Restricted | onlinelibrary.wiley.com Restricted | Computer Graphics Forum Restricted | CNR ExploRA Restricted


2020 Journal article Restricted

ReviewerNet: A visualization platform for the selection of academic reviewers
Salinas M., Giorgi D., Ponchio F., Cignoni P.
We propose ReviewerNet, an online, interactive visualization system aimed to improve the reviewer selection process in the academic domain. Given a paper submitted for publication, we assume that good candidate reviewers can be chosen among the authors of a small set of pertinent papers; ReviewerNet supports the construction of such set of papers, by visualizing and exploring a literature citation network. The system helps journal editors and Program Committee members to select reviewers that do not have any conflict-of-interest and are representative of different research groups, by visualising the careers and co-authorship relations of candidate reviewers. The system is publicly available, and is demonstrated in the field of Computer Graphics.Source: Computers & graphics 89 (2020): 77–87. doi:10.1016/j.cag.2020.04.006
DOI: 10.1016/j.cag.2020.04.006

See at: Computers & Graphics Restricted | Computers & Graphics Restricted | Computers & Graphics Restricted | Computers & Graphics Restricted | Computers & Graphics Restricted | CNR ExploRA Restricted | www.sciencedirect.com Restricted | Computers & Graphics Restricted


2020 Journal article Open Access OPEN

A bending-active twisted-arch plywood structure: computational design and fabrication of the FlexMaps Pavilion
Laccone F., Malomo L., Pérez J., Pietroni N., Ponchio F., Bickel B., Cignoni P.
Bending-active structures are able to efficiently produce complex curved shapes from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium configuration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match specific bending requests, namely the global curvature of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which defines the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplified pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arch that fits a bounding box of 3.90x3.96x3.25 meters. This case study serves to test the applicability of this methodology at the architectural scale. The structure is validated via FE analyses and the fabrication of the full scale prototype.Source: SN Applied Sciences 2 (2020). doi:10.1007/s42452-020-03305-w
DOI: 10.1007/s42452-020-03305-w
Project(s): EVOCATION via OpenAIRE

See at: link.springer.com Open Access | SN Applied Sciences Open Access | ISTI Repository Open Access | CNR ExploRA Open Access | SN Applied Sciences Restricted | SN Applied Sciences Restricted | SN Applied Sciences Restricted | SN Applied Sciences Restricted


2020 Journal article Open Access OPEN

Neural reflectance transformation imaging
Dulecha T. G., Fanni F. A., Ponchio F., Pellacini F., Giachetti A.
Reflectance transformation imaging (RTI) is a computational photography technique widely used in the cultural heritage and material science domains to characterize relieved surfaces. It basically consists of capturing multiple images from a fixed viewpoint with varying lights. Handling the potentially huge amount of information stored in an RTI acquisition that consists typically of 50-100 RGB values per pixel, allowing data exchange, interactive visualization, and material analysis, is not easy. The solution used in practical applications consists of creating "relightable images" by approximating the pixel information with a function of the light direction, encoded with a small number of parameters. This encoding allows the estimation of images relighted from novel, arbitrary lights, with a quality that, however, is not always satisfactory. In this paper, we present NeuralRTI, a framework for pixel-based encoding and relighting of RTI data. Using a simple autoencoder architecture, we show that it is possible to obtain a highly compressed representation that better preserves the original information and provides increased quality of virtual images relighted from novel directions, especially in the case of challenging glossy materials. We also address the problem of validating the relight quality on different surfaces, proposing a specific benchmark, SynthRTI, including image collections synthetically created with physical-based rendering and featuring objects with different materials and geometric complexity. On this dataset and as well on a collection of real acquisitions performed on heterogeneous surfaces, we demonstrate the advantages of the proposed relightable image encoding.Source: The visual computer (2020): 2161–2174. doi:10.1007/s00371-020-01910-9
DOI: 10.1007/s00371-020-01910-9

See at: IRIS - Università degli Studi di Verona Open Access | link.springer.com Open Access | The Visual Computer Open Access | ISTI Repository Open Access | CNR ExploRA Open Access | The Visual Computer Restricted | The Visual Computer Restricted | The Visual Computer Restricted | The Visual Computer Restricted | The Visual Computer Restricted | The Visual Computer Restricted


2020 Journal article Open Access OPEN

Real-World textured things: a repository of textured models generated with modern photo-reconstruction tools
Maggiordomo A., Ponchio F., Cignoni P., Tarini M.
We are witnessing a proliferation of textured 3D models captured from the real world with automatic photo-reconstruction tools by people and professionals without a proper technical background in computer graphics. Digital 3D models of this class come with a unique set of characteristics and defects - especially concerning their parametrization - setting them starkly apart from 3D models originating from other, more traditional, sources. We study this class of 3D models by collecting a significant number of representatives and quantitatively evaluating their quality according to several metrics. These include a new invariant metric we carefully design to assess the amount of fragmentation of the UV map, which is one of the main weaknesses potentially hindering the usability of these models. Our results back the widely shared notion that models of this new class are still not fit for direct use in downstream applications (such as videogames), and require challenging processing steps. Regrettably, existing automatic geometry processing tools are not always up to the task: for example, we verify that the available tools for UV optimization often fail due to mesh inconsistencies, geometric and topological noise, excessive resolution, or other factors; moreover, even when an output is produced, it rarely represents a significant improvement over the input (according to the aforementioned measures). Therefore, we argue that further advancements are required by the computer graphics and geometry processing communities specifically targeted at this class of models. Towards this goal, we share the models we collected in this study as a new public repository, Real-World Textured Things (RWTT), intended as a benchmark to systematic field-test and compare future algorithms. RWTT consists of 568 carefully selected textured 3D models representative of the most popular photo-reconstruction tools currently available. We also provide a web interface to browse the dataset by the metadata we collected during our experiments and a tool, TexMetro, to compute the same set of measures on generic UV mapped datasets.Source: Computer aided geometric design 83 (2020). doi:10.1016/j.cagd.2020.101943
DOI: 10.1016/j.cagd.2020.101943
Project(s): ENCORE via OpenAIRE

See at: arXiv.org e-Print Archive Open Access | Computer Aided Geometric Design Open Access | Archivio Istituzionale della Ricerca dell'Università degli Studi di Milano Open Access | Computer Aided Geometric Design Restricted | Computer Aided Geometric Design Restricted | Computer Aided Geometric Design Restricted | Computer Aided Geometric Design Restricted | Computer Aided Geometric Design Restricted | CNR ExploRA Restricted | Computer Aided Geometric Design Restricted | www.sciencedirect.com Restricted | Computer Aided Geometric Design Restricted


2020 Conference article Open Access OPEN

Another Brick in the Wall: Improving the Assisted Semantic Segmentation of Masonry Walls
Pavoni G., Giuliani F., De Falco A., Corsini M., Ponchio F., Callieri M., Cignoni P.
In Architectural Heritage, the masonry's interpretation is an essential instrument for analyzing the construction phases, the assessment of structural properties, and the monitoring of its state of conservation. This work is generally carried out by specialists that, based on visual observation and their knowledge, manually annotate ortho-images of the masonry generated by photogrammetric surveys. This results in vectorial thematic maps segmented according to their construction technique (isolating areas of homogeneous materials/structure/texture) or state of conservation, including degradation areas and damaged parts. This time-consuming manual work, often done with tools that have not been designed for this purpose, represents a bottleneck in the documentation and management workflow and is a severely limiting factor in monitoring large-scale monuments (e.g.city walls). This paper explores the potential of AI-based solutions to improve the efficiency of masonry annotation in Architectural Heritage. This experimentation aims at providing interactive tools that support and empower the current workflow, benefiting from specialists' expertise.Source: 18th Eurographics Workshop on Graphics and Cultural Heritage, pp. 43–51, Online event, 18-19/11/2020
DOI: 10.2312/gch.20201291

See at: ISTI Repository Open Access | CNR ExploRA Open Access


2019 Conference article Open Access OPEN

FlexMaps Pavilion: a twisted arc made of mesostructured flat flexible panels
Laccone F., Malomo L., Perez J., Pietroni N., Ponchio F., Bickel B., Cignoni P.
Bending-active structures are able to eciently produce complex curved shapes starting from flat panels. The desired deformation of the panels derives from the proper selection of their elastic properties. Optimized panels, called FlexMaps, are designed such that, once they are bent and assembled, the resulting static equilibrium conguration matches a desired input 3D shape. The FlexMaps elastic properties are controlled by locally varying spiraling geometric mesostructures, which are optimized in size and shape to match the global curvature (i.e., bending requests) of the target shape. The design pipeline starts from a quad mesh representing the input 3D shape, which denes the edge size and the total amount of spirals: every quad will embed one spiral. Then, an optimization algorithm tunes the geometry of the spirals by using a simplied pre-computed rod model. This rod model is derived from a non-linear regression algorithm which approximates the non-linear behavior of solid FEM spiral models subject to hundreds of load combinations. This innovative pipeline has been applied to the project of a lightweight plywood pavilion named FlexMaps Pavilion, which is a single-layer piecewise twisted arc that ts a bounding box of 3.90x3.96x3.25 meters.Source: FORM and FORCE, IASS Symposium 2019 60th Anniversary Symposium of the International Association for Shell and Spatial Structures Structural Membranes 2019 9th International Conference on Textile Composites and Inflatable Structures, pp. 498–504, Barcelona, 7-10/10/2019

See at: ISTI Repository Open Access | CNR ExploRA Open Access


2019 Other Unknown

Three Armenian Manuscripts from Tuscany
Callieri M., Pingi P., Potenziani M., Ponchio F., Scopigno R.
For the temporary exhibition "Three Armenian Manuscripts from Tuscany", taking palce at the Matenadaran Museum (Jerevan, Armenia) from June 9th 2019 to January 9 2020, The Visual Computing Lab of ISTI-CNR created a multimedia interactive kiosk presenting to the museum visitors the pages of the codices and the rooms of the libraries that preserved the books in their long life. The photographic campaign of the codices and buildings has also been used in the monographic volume "Three Armenian Manuscripts from Tuscany (13th - 14th century)", by Anna Rita Fantoni e Giovanna Rasario. Mandragora, Firenze. 2019. ISBN 978-88-7461-475-2 The Kiosk presents, commented by the texts edited by the experts Anna Rita Fantoni e Giovanna Rasario, high-res 360° panorama images of ther libraries (Biblioteca Medicea Laurenziana and Biblioteca di S. Matteo), high-res images of selected pages of the three codices displayed int he exhibition, and relightable RTI images of the decorated cover of one of the codices and of a parchment page illuminated in gold. The Kiosk is based on web technologies: this makes possible the installation on a stand-alone PC (like in the exhibition) but also a web publishing, linked just above. The generation of RTI, and the web visualization of RTI and multiresolution images is managed by the library Relight, developed by ISTI-CNR.

See at: CNR ExploRA | vcg.isti.cnr.it


2019 Conference article Restricted

Image sets compression via patch redundancy
Corsini M., Banterle F., Ponchio F., Cignoni P.
In the last years, the development of compression algorithms for image collections (e.g., photo albums) has become very popular due to the enormous diffusion of digital photographs. Typically, current solutions create an image sequence from images of the photo album to make them suitable for compression using a High Performance Video Coding (HEVC) encoder. In this study, we investigated a different approach to compress a collection of similar images. Our main idea is to exploit the inter- and intra- patch redundancy to compress the entire set of images. In practice, our approach is equivalent to compress the image set with Vector Quantization (VQ) using a global codebook. Our tests show that our clusterization algorithm is effective for a large number of images.Source: EUVIP 2019 - 8th European Workshop on Visual Information Processing, pp. 10–15, Roma, Italy, 28-31 October 2019
DOI: 10.1109/euvip47703.2019.8946237

See at: academic.microsoft.com Restricted | dblp.uni-trier.de Restricted | ieeexplore.ieee.org Restricted | iris.unimore.it Restricted | CNR ExploRA Restricted | xplorestaging.ieee.org Restricted


2019 Journal article Restricted

RELIGHT: a compact and accurate RTI representation for the web
Ponchio F., Corsini M., Scopigno R.
Relightable images have been widely used as a valuable tool in Cultural Heritage (CH) artifacts, including coins, bas-reliefs, paintings, and epigraphs. Reflection Transformation Imaging (RTI), a commonly used type of relightable images, consists of a per-pixel function which encodes the reflection behavior, estimated from a set of digital photographs acquired from a fixed view. Web visualisation tools for RTI images currently require to transmit substantial quantities of data in order to achieve high fidelity renderings. We propose a web-friendly compact representation for RTI images based on a joint interpolation-compression scheme that combines a PCA-based data reduction with a Gaussian Radial Basis Function (RBF) interpolation exhibiting superior performance in terms of quality/size ratio. This approach can be adapted also to other data interpolation schemes, and it is not limited to Gaussian RBF. The rendering part is simple to implement and computationally efficient allowing real-time rendering on low-end devices.Source: Graphical models (Print) 105 (2019). doi:10.1016/j.gmod.2019.101040
DOI: 10.1016/j.gmod.2019.101040

See at: Graphical Models Restricted | Graphical Models Restricted | Graphical Models Restricted | Graphical Models Restricted | Graphical Models Restricted | CNR ExploRA Restricted | Graphical Models Restricted


2019 Conference article Open Access OPEN

A complete framework operating spatially-oriented RTI in a 3D/2D cultural heritage documentation and analysis tool
Pamart A., Ponchio F., Abergel V., Alaoui M'darhri A., Corsini M., Dellepiane M., Morlet F., Scopign R., De Luca L.
Close-Range Photogrammetry (CRP) and Reflectance Transformation Imaging (RTI) are two of the most used image-based techniques when documenting and analyzing Cultural Heritage (CH) objects. Nevertheless, their potential impact in supporting study and analysis of conservation status of CH assets is reduced as they remain mostly applied and analyzed separately. This is mostly because we miss easy-to-use tools for of a spatial registration of multimodal data and features for joint visualisation gaps. The aim of this paper is to describe a complete framework for an effective data fusion and to present a user friendly viewer enabling the joint visual analysis of 2D/3D data and RTI images. This contribution is framed by the on-going implementation of automatic multimodal registration (3D, 2D RGB and RTI) into a collaborative web platform (AIOLI) enabling the management of hybrid representations through an intuitive visualization framework and also supporting semantic enrichment through spatialized 2D/3D annotations.Source: 8th International Workshop 3D-ARCH "3D Virtual Reconstruction and Visualization of Complex Architectures", pp. 573–580, Bergamo, Italy, 6-8 February 2019
DOI: 10.5194/isprs-archives-xlii-2-w9-573-2019

See at: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | CNR ExploRA Open Access | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Open Access | Hyper Article en Ligne Restricted


2019 Conference article Open Access OPEN

Heterotoki: Non-structured and heterogeneous terminology alignment for Digital Humanities data producers
Lame M., Pittet P., Ponchio F., Markhoff B., Sanfilippo E. M.
In this paper, we present an online communication-driven decision support system to align terms from a dataset with terms of another dataset (standardized controlled vocabulary or not). Heterotoki differs from existing proposals in that it takes place at the interface with humans, inviting the experts to commit on their definitions, so as to either agree to validate the mapping or to propose some enrichment to the terminologies. More precisely, differently to most of existing proposals that support terminology alignment, Heterotoki sustains the negotiation of meaning thanks to semantic coordination support within its interface design. This negotiation involves domain experts having produced multiple datasets.Source: ODOCH 2019 - Open Data and Ontologies for Cultural Heritage, pp. 37–48, Rome, Italy, 3 June, 2019

See at: ceur-ws.org Open Access | ISTI Repository Open Access | CNR ExploRA Open Access


2018 Journal article Open Access OPEN

A 3D-centered information system for the documentation of a complex restoration intervention
Apollonio F. I., Basilissi V., Callieri M., Dellepiane M., Gaiani M., Ponchio F., Rizzo F., Rubino A. R., Scopigno R., Sobrà G.
Restoration is becoming a quite complex process: a large number of internal and external variables co-exist and may impair it. Among these, the large number of professionals involved and the huge amount of documentation produced can heavily affect the quality of the intervention as well as the possibility to have systemic and informed interventions in the future. In particular, a standardized method for storing restoration data and accessing them is still lacking, and the use of new technologies is still limited and/or not scalable. The paper describes the process of designing and testing an information system (IS) based on three-dimensional (3D) data, aimed to support the restoration of Neptune's Fountain in Bologna. In preparation of the restoration, a major effort was carried out to design and implement a web-based IS able to host all of the data produced, to allow the conservation-restoration specialists to interact on-site with an accurate 3D representation of the elements of the fountain, and to directly reference all information and data produced on the geometry of the model. The paper focuses on the challenges and adopted solutions related to the use of 3D models and the data mapping on 3D surfaces in the context of restoration documentation. Highly detailed visualizations of the models, easy navigation, and usable functionalities to add information directly on the 3D model have been achieved by extending the available solutions and by implementing new mechanisms to overcome the limitations of WebGL and remote rendering. Neptune IS' development has been extensively experimented in a real context of use. Results and knowledge from the experimentation currently represents the basis for evolving Neptune IS into a possible generic and flexible platform for documentation management in the field of restoration and related methodologies.Source: Journal of cultural heritage 29 (2018): 89–99. doi:10.1016/j.culher.2017.07.010
DOI: 10.1016/j.culher.2017.07.010

See at: RE.PUBLIC@POLIMI Research Publications at Politecnico di Milano Open Access | ISTI Repository Open Access | Journal of Cultural Heritage Restricted | Journal of Cultural Heritage Restricted | Journal of Cultural Heritage Restricted | Journal of Cultural Heritage Restricted | Journal of Cultural Heritage Restricted | Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna Restricted | CNR ExploRA Restricted | Journal of Cultural Heritage Restricted | www.sciencedirect.com Restricted


2018 Journal article Open Access OPEN

CENOBIUM 10 years after: an evolving platform for Digital Humanities
Dercks U., Ponchio F., Scopigno R.
The Authors present CENOBIUM, a web-based system designed to support the work of art historians. It provides access to multimedia content and related descriptive text on a specific topic: capitals in Romanesque cloisters. This paper discusses the motivation behind the decision to develop this web resource, taken more than ten years ago. It describes the initial design of the often system and how it evolved to keep pace with technological developments. In a context where the results of ICT & CH projects (digital tools, websites) have life span barely exceeding the timeframe of the actual project, CENOBIUM can be considered a success. It has been operating and steadily been updated with new content and latest technologies throughout its decade-long life.Source: Archeologia e calcolatori 2018 (2018): 123–141. doi:10.19282/ACS.10.2018.08
DOI: 10.19282/acs.10.2018.08

See at: ISTI Repository Open Access | CNR ExploRA Open Access | www.progettocaere.rm.cnr.it Open Access


2018 Conference article Open Access OPEN

Visualizing and transcribing complex writings through RTI
Ponchio F., Lamè M., Scopigno R., Robertson B.
This paper presents our digital publishing process and its editing system developed for a specific use case - the scholarly digital edition of a set of Roman inscribed lead tags - but suited for analyzing a broad variety of text-bearing objects. This pipeline covers the spectrum of the activities from data acquisition of the visual aspects to complex analysis of the writings and text of incised inscriptions. It employs a twodimensional medium, Reflection Transformation Images (RTI), to support visual analysis. The visual and textual data it generates are open access, ready to be used for machine learning processes.Source: CiST 2018 - IEEE 5th International Congress on Information Science and Technology, pp. 227–231, Marrakech, Marocco, 22-24 October 2018
DOI: 10.1109/cist.2018.8596602

See at: ieeexplore.ieee.org Open Access | ISTI Repository Open Access | CNR ExploRA Open Access | academic.microsoft.com Restricted | dblp.uni-trier.de Restricted | doi.org Restricted | xplorestaging.ieee.org Restricted


2018 Conference article Open Access OPEN

A Compact Representation of Relightable Images for the Web
Ponchio F., Corsini M., Scopigno R.
Relightable images have demonstrated to be a valuable tool for the study and the analysis of coins, bas-relief, paintings, and epigraphy in the Cultural Heritage (CH) field. Reflection Transformation Imaging (RTI) are the most diffuse type of relightable images. An RTI image consists in a per-pixel function which encodes the reflection behavior, estimated from a set of digital photographs acquired from a fixed view. Even if web visualization tools for RTI images are available, high fidelity of the relighted images still requires a high amount of data to be transmitted. To overcome this limit, we propose a web-friendly compact representation for RTI images which allows very high quality of the rendered images with a relatively small amount of data required (in the order of 6-9 standard JPEG color images). The proposed approach is based on a joint interpolation-compression scheme that combines a PCA-based data reduction with a Gaussian Radial Basis Function (RBF) interpolation. We will see that the proposed approach can be adapted also to other data interpolation schemes, and it is not limited to Gaussian RBF. The proposed approach has been compared with several techniques, demonstrating its superior performance in terms of quality/size ratio. Additionally, the rendering part is simple to implement and very efficient in terms of computational cost. This allows real-time rendering also on low-end devices.Source: Web3D '18 - 23rd International ACM Conference on 3D Web Technology, Poznan, Poland, 20-22 June, 2018
DOI: 10.1145/3208806.3208820
Project(s): PARTHENOS via OpenAIRE

See at: ISTI Repository Open Access | academic.microsoft.com Restricted | dblp.uni-trier.de Restricted | dl.acm.org Restricted | dl.acm.org Restricted | doi.acm.org Restricted | CNR ExploRA Restricted


2017 Contribution to book Restricted

Gestire e comunicare il progetto
Callieri M., Dellepiane M., Ponchio F., Scopigno R.
Il progetto di restauro della fontana del Nettuno ha posto alcune sfide, non solo nell'ambito della diagnostica e degli interventi di restauro, ma anche nel campo della gestione delle informazioni e della comunicazione relative al progetto. È, infatti, ormai ben noto come la gestione e la veicolazione delle informazioni costituiscano uno dei tratti salienti della nostra era. La sempre più ampia diffusione e utilizzazione delle tecnologie digitali - se opportunamente impiegate - da un lato possono permettere un più agevole accesso alle informazioni da parte non solo degli esperti e degli addetti ai lavori, ma anche dei cittadini comuni, e dall'altro una migliore efficacia nella gestione dei sistemi e dei processi che sono divenuti sempre più complessi, in particolar modo quando riguardano beni culturali di rilevante valore storico-artistico. In un tale contesto si è cercato di mettere a punto una strategia integrata di gestione del flusso delle informazioni che fosse in grado di garantire la gestione dell'intero ciclo di vita del monumento (relativamente alla sua storia passata, al presente del cantiere e agli anni a venire) e di avvicinare la fontana del Nettuno al cuore dei cittadini e all'interesse dei turisti, facendolo tornare a essere uno dei simboli più emblematici della città.Source: Nettuno. La fontana: studio, rogetto, restauro, edited by Marco Gaiani, pp. 171–192, 2017

See at: CNR ExploRA Restricted


2017 Journal article Restricted

Il restauro della Fontana del Nettuno a Bologna - Un sistema 3D web per la documentazione e la gestione dei dati
Apollonio F. I., Basilissi V., Bitelli G., Callieri M., Catalano D., Dellepiane M., Gaiani M., Ponchio F., Rizzo F., Rubino A. R., Scopigno R.
In questo lavoro sono presentate le caratteristiche di un innovativo sistema di documentazione, realizzato per il restauro della Fontana del Nettuno di Bologna. Il Sistema Informativo usa un accurato modello tridimensionale per archiviare i dati raccolti in modo referenziato alla geometria 3D, per accedere agli stessi usando il modello 3D come indice spaziale ed infine per realizzare mappature direttamente sulla superficie dell'artefatto digitale analogo a quello dell'opera.Source: Archeomatica (Roma) 8 (2017): 30–34.

See at: CNR ExploRA Restricted | www.archeomatica.it Restricted


2017 Journal article Open Access OPEN

Delivering and using 3D models on the web: are we ready?
Scopigno R., Callieri M., Dellepiane M., Ponchio F., Potenziani M.
Digital technologies are now mature for producing high quality digital replicas of Cultural Heritage (CH) assets. The research results produced in the last decade ignited an impressive evolution and consolidation of the technologies for acquiring high-quality digital three-dimensional (3D) models, encompassing both geometry and color. What remains still an open problem is how to deliver those data and related knowledge to our society. The web is nowadays the main channel for the dissemination of knowledge. Emerging commercial solutions for web-publishing of 3D data are consolidating and becoming a de-facto standard for many applications (e-commerce, industrial products, education, etc.). In this framework, CH is a very specific domain, requiring highly flexible solutions. Some recent experiences are presented, aimed at providing a support to the archival of archaeological 3D data, supporting web-based publishing of very high-resolution digitization results and finally enabling the documentation of complex restoration actions. All those examples have been recently implemented on the open-source 3D Heritage Online Presenter (3DHOP) platform, developed at CNR-ISTI.Source: Virtual archaeology review 8 (2017): 1–9. doi:10.4995/var.2017.6405
DOI: 10.4995/var.2017.6405
Project(s): EMOTIVE via OpenAIRE, PARTHENOS via OpenAIRE

See at: Virtual Archaeology Review Open Access | Virtual Archaeology Review Open Access | Virtual Archaeology Review Open Access | ISTI Repository Open Access | Virtual Archaeology Review Open Access | Virtual Archaeology Review Open Access | Virtual Archaeology Review Open Access | CNR ExploRA Open Access | Virtual Archaeology Review Open Access