86,523 research outputs found
DATA MANAGEMENT, EFFICIENT USE, AND SMART ACCESS TO REALITY CAPTURE DATA VIA WEB PLATFORMS
No full textSharing the output data of a digital survey with other stakeholders can increase its professional and widespread use. How a non-surveying specialist can visualize, interrogate and measure the reality-based models in the three-dimensional space -and not only- without sector-specific software is, for most instances, a significantly challenging problem. The possibility to upload digital survey data on web platforms would allow for greater dissemination and greater exploitation of the capabilities of reality capture technology. The point cloud can be displayed and investigated directly on the web and accessible on any device (laptop, desktop, tablet, or smartphone). The tools for measuring, cropping, annotating, and downloading data are usually included as standard features. Moreover, the different commercial proposals provide many innovative functions: VR interaction, BIM interoperability, automatic scan alignment, and 3D point cloud automatic segmentation and classification. The web-based system solution represents a real revolution in digital data sharing among experts, technicians, and professionals, who can dispose of all the survey data directly on their devices anytime, anywhere, preventing data loss and enhancing user sharing.
This paper aimed to present the characteristics and the potential of some online platforms for direct sharing and management of the point clouds derived from image- or range-based techniques. This preliminary research is presented to underline the pros and cons and identify future developments in this new way of exploiting digital survey data. This approach can be advantageous in the Cultural Heritage field, especially when CAD or HBIM 3D modelling is unnecessary because it is not the final aim. The solution can be to skip the whole complex and time-consuming modelling phase and directly use the point cloud as the 3D geometric base and as a reference for the information repository
Towards Master Data Management for Cultural Heritage: the Sacri Monti web platform
No full textThis paper focuses on managing the Cultural Heritage maintenance process through web platforms, exploring a data-driven new approach that relies on the framework of Master Data Management (MDM). The MDM framework is based on data quality, revisioning and auditing of information, and the Microsoft SQL Server Master Data Services (MDS) was used. It is a highly customizable commercial tool that proved to be effective and able to manage extended and articulated databases and provide stability and long-term software support. MDS provides powerful tools to avoid duplicates, ensure data quality, and record all the modifications that occurred on the dataset over time. These are key features to build a reliable platform for information management of complex CH assets. The paper presents some first tests applied for the Sacri Monti of Piedmont and Lombardy case of study. It is a UNESCO wide religious architectural complex site in northern Italy’s mountainous part. The paper compares approaches and previous experiences of Sacri Monti management using web platform information systems, such as the BIM3DSG, Chimera, and Main10ance, to support Sacri Monti management activity
Bridging the gap between 3D survey and use of digital data in the CH field
No full textRecent hardware and software developments have made 3D more extensively used in
specialized applications. The public's perception is evolving, and there is a growing
desire for 3D: the potential of using complete and immersive data is clear to everyone.
The goal is to expand access to this data simply and helpfully so that 3D can be used
by everyone, not just professionals. This demand is acute in cultural heritage, but
currently, 3D digital models are barely used in real working processes.
Many researchers in HBIM are an example of how 3D is wished in the CH field: the
concept of BIM as a building-related information system is vital, even if it is
infrequently employed by conservation and restoration practitioners. The “lesson
learnt” after years of research is to forgo modelling and instead use point clouds
directly on internet platforms. These technologies enable the dissemination and full
use of 3D survey technology in the real world, bridging the gap between digital
surveys and day-to- day applications. Standard functions include measuring, cropping,
annotating, and downloading. Commercial options also include VR interactivity, BIM
integration, automatic registration, segmentation, and categorization of point clouds
(machine learning based). Future development will transform the 3D point cloud into a
3D web information system. This is the key development that will revolutionize how
technicians and other professionals communicate, share, and use digital data by
allowing them to access it instantaneously and anywhere. This reduces time, preserves
the model's metric relevance, and simplifies system adaption to new conditions.
The debate examines the merits and prospects of more advanced web systems for
direct sharing and management of image or range-based point clouds. The early
research reveals potential future improvements to this unique approach of using
digital survey data
WEB PLATFORMS FOR CULTURAL HERITAGE MANAGEMENT: THE PARCO ARCHEOLOGICO DEL COLOSSEO CASE STUDY
No full textThis paper describes the digitization test of Fonte Giuturna (Giuturna spring) in the Roman Forum area, from survey to data management through the in-use monitoring system, the WebApp SyPEAH of the Parco Archeologico del Colosseo. The location of Giuturna Spring, characterized by the presence of heterogeneous archaeological remains from different ages, was surveyed in May 2022 as part of a research project that aimed to superintend the entire Cultural Heritage digitization pipeline to provide the Archaeological Park Administration the digitization guidelines as a tool to standardize future surveys and data deliveries.Inspired by the desire to build a system of protection and conservation at the service of sustainable exploitation, SyPEAH is a web platform based on open-source modules designed to manage archaeological records with a WebGIS approach. It supports the use of several 3D data formats, including point clouds. The paper focuses on the web platform, describing the web app’s main features, especially in terms of point cloud data management. Moreover, possible future development of the platform intended to implement usability for single archaeological objects is described.</p
The Last Supper information system: samples from Gallone archive
No full textMapping at the service of conservation: designing an information system to reference the samples on the artwork surface. Towards an open access online repository of the analytical data about the work of Leonardo da Vinci, sharing knowledge among scholars involved in the conservation field
A HYBRID MODEL FOR THE REVERSE ENGINEERING OF THE MILAN CATHEDRAL. CHALLENGES AND LESSON LEARNT
No full textCultural Heritage (CH) 3D digitisation is getting increasing attention and importance. Advanced survey techniques provide as output a 3D point cloud, wholly and accurately describing even the most complex architectural geometry with a priori established accuracy. These 3D point models are generally used as the base for the realisation of 2D technical drawings and 3D advanced representations. During the last 12 years, the 3DSurveyGroup (3DSG, Politecnico di Milano) conduced an omni-comprehensive, multi-technique survey, obtaining the full point cloud of Milan Cathedral, from which were produced the 2D technical drawings and the 3D model of the Main Spire used by the Veneranda Fabbrica del Duomo di Milano (VF) to plan its periodic maintenance and inspection activities on the Cathedral. Using the survey product directly to plan VF activities would help to skip a long-lasting, uneconomical and manual process of 2D and 3D technical elaboration extraction. In order to do so, the unstructured point cloud data must be enriched with semantics, providing a hierarchical structure that can communicate with a powerful, flexible information system able to effectively manage both point clouds and 3D geometries as hybrid models. For this purpose, the point cloud was segmented using a machine-learning algorithm with multi-level multi-resolution (MLMR) approach in order to obtain a manageable, reliable and repeatable dataset. This reverse engineering process allowed to identify directly on the point cloud the main architectonic elements that are then re-organised in a logical structure inserted inside the informative system built inside the 3DExperience environment, developed by Dassault Systémes
A procedure to import a complex geometry model of a Heritage Building into BIM for advanced architectural representations
No full textThe aim of this communication is to present the advantages and disadvantages of a Scan-to-BIM process applied to a heritage building in order to obtain advanced technical drawings to be used in the analysis and illustration of the project. The whole process described includes: the survey planification and data acquisition with a Terrestrial Laser Scanner; the processing and cleaning of the point cloud; the 3D mathematical modelling; a proposal for semi-automatic modelling of organic elements; and the import of the final model into a BIM environment. Rhinoceros (McNeel) and Revit (Autodesk) are the main programs used. The crucial aspect of this workflow is found at the moment of importing the geometrical model into Revit, having to accommodate the criteria of this program in terms of tolerances, geometric structure of the solids, incompatibilities with NURBS libraries, etc. The result is a BIM model divided into families and subcategories where visual attributes can be assigned per element, parameterized and other visual information can be added (orthophotographs, wireframe analysis drawings, etc.). In other words, a 3D model from which highly configurable advanced representations (plans, vertical sections, perspectives, isometric exploded view, etc.) can be obtained and with which to generate analyses from the field of Architectural Graphic Expression
A MULTI-SENSOR APPROACH TO SURVEY COMPLEX ARCHITECTURES SUPPORTED BY MULTI-CAMERA PHOTOGRAMMETRY
No full textPoint clouds are nowadays a standard format of three-dimensional data. Various survey techniques are available, differing in characteristics, mode of use, and target applications, nevertheless producing point clouds that are similar, comparable, and combinable. According to recent literature, combining data from multiple sensors is an established practice for large surveying projects, particularly in Cultural Heritage, where the geometric complexity of buildings encourages the employment of many sensors. This paper presents a multi-sensor approach to surveying complex architectural spaces. The case study is the Cathedral of Aosta (AO) in Italy, which is interested in a conservation project that requires investigating the two bell towers of the cathedral. The survey aimed to produce a point cloud of 5 mm resolution and 1–2 cm accuracy compatible with the 1:50 scale of representation. The following survey techniques were employed: (i) laser scanning, (ii) terrestrial photogrammetry, (iii) UAV photogrammetry, and (iv) multi-camera fisheye photogrammetry. The distinctive feature of our approach lies in the multi-camera survey, conducted using a prototype composed of five fisheye cameras. The paper describes the data acquisition phase conducted with the different techniques, the mutual verification of the data performed by cross-sections check, the segmentation, and the final assembly of the various portions until a complete point cloud with homogeneous characteristics is obtained. All the data were then collected in a web platform (FlyVast) enriched with data and info made available to the professional to plan future interventions
Towards an Integrated Approach to the Digitization of Cultural Heritage: a Case Study from Survey to Information Management
No full textThe advancement of reality capture technologies has significantly accelerated the digitization possibilities of Cultural Heritage (CH), while the practical implementation of these technologies and tools raises new challenges to be addressed. This paper describes some research experiences in the field of Cultural Heritage digitization, presenting the benefits of a multiple sensors survey approach to produce accurate and complete models of architecture. The article presents three case studies concerning different Cultural Heritage sites and monuments and their digitization project: the bell towers and apse of the Cathedral of Santa Maria Assunta and San Giovanni Battista in Aosta, the Giuturna Spring in the Archaeological Park of Colosseo in Rome, and Milan Cathedral. The cases studies correspond to illustrate the holistic digitization approach, considering possible problems when come to articulated and complicated architectural spaces, openair and large range cultural heritage, from data acquisition, survey integration, to data sharing and information management through web platforms. The process of multi-sensor data acquisition involves the integration of data coming from various sources like terrestrial laser scanners (TLS), close-range and UAV photogrammetry, and multi-camera photogrammetric systems. This integration process has become dominant in the digitalization practices, for it allows for a more completed and accurate representation of the surveyed areas, compensating for each survey technique limitation. The resulting 3D models aims at being as the most complete and representative as possible, according to the survey conditions and intrinsic limitations. Regarding the problem of data use and sharing among experts in wide span of disciplines, presents the promising role of web platforms for 3D data management. These platforms provide a centralized repository where data can be stored, organized, and accessed by users and ensure a proficient experience also from digital devices with light computational power. The paper explores the potential future possibilities offered by the possible adoption of automation and artificial intelligence (AI) in the field of Cultural Heritage. Primary concerns of integrating AI and automation into cultural heritage digitization were discussed. Addressed also possible challenges and ontoligical issues that may arise with the increased use of these technologies
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