This work presents a semi-automatic approach to the 3D reconstruction of Heritage-Building Information Models from point clouds based on machine learning techniques. The use digital information systems leveraging three-dimensional (3D) representations in architectural heritage documentation and analysis is ever increasing. For creation such repositories, reality-based surveying techniques, as photogrammetry laser scanning, allow fast collection reliable replicas study objects form clouds....

We propose a semi-automatic Scan-to-BIM reconstruction approach, making the most of Artificial Intelligence (AI) techniques, for classification digital architectural heritage data. Nowadays, Heritage- or Historic-Building Information Modeling (H-BIM) from laser scanning photogrammetric surveys is manual, time-consuming, overly subjective process, but emergence AI applied to realm existing heritage, offering new ways interpret, process and elaborate raw surveying data, as point clouds. The...

This paper conducts a comparative evaluation between Neural Radiance Fields (NeRF) and photogrammetry for 3D reconstruction in the cultural heritage domain. Focusing on three case studies, of which Terpsichore statue serves as pilot case, research assesses quality, consistency, efficiency both methods. The results indicate that, under conditions reduced input data or lower resolution, NeRF outperforms preserving completeness material description same set images (with known camera poses)....

Abstract. Neural Radiance Fields (NeRF or NeRFs) are to date emerging as a novel method for synthesizing views of complex 3D scenes, leveraging an artificial neural network optimize volumetric scene function using set input views. We conduct preliminary critical review the scientific and technical literature on NeRFs, we highlight possible applications latter in Cultural Heritage domain, image-based reconstruction models real, multi-scale objects, even combination with more well-established...

Abstract. The evolution of Structure from Motion (SfM) techniques and their integration with the established procedures classic stereoscopic photogrammetric survey have provided a very effective tool for production three-dimensional textured models. Such models are not only aesthetically pleasing but can also contain metric information, quality which depends on both type applied processing methodologies. An open research topic in this area refers to checking attainable accuracy levels....

Abstract. Research in the field of Cultural Heritage is increasingly moving towards creation digital information systems, which geometric representation an artifact linked to some external information, through meaningful tags. The process attributing additional and structured various elements a given model customarily identified with term semantic annotation; added contextual associated, for instance, analysis conservation terms. Starting from existing literature, aim this work discuss how...

Cultural heritage studies often require the analysis of buildings that have undergone several changes and alterations during their lifetime. This implies loss architectural elements or construction new elements, which both change characteristics former buildings. The recovery lost structures through virtual reconstruction is paramount importance in scientific cultural applications. Novel procedures surveying photogrammetric processing including historical photogrammetry terrestrial laser...

The integration of Terrestrial Laser Scanning (TLS) and Structure from Motion MultiView Stereo techniques allows to obtain comprehensive models complex objects by using each technique in contexts presenting the optimal operating conditions, as widely reported bibliographic references. A different situation occurs for emergency surveys. In this case, time security act constraining factors, requiring use these also most unfavourable conditions. case photogrammetry, include areas where object...

Abstract. In the last decade, in field of conservation historic buildings, several research projects have shown potential applying BIM technology to architectural heritage. However, use for buildings (HBIM) is still evolving. This paper presents an application Building Information Modelling targeted development a restauration proposal ex-church San Quirico all’Olivo Lucca, Tuscany. Following brief review state-of-the-art applied heritage, shows results study that included 3D survey with...

The digitization of Cultural Heritage paves the way for new approaches to surveying and restitution historical sites. With a view management integrated programs documentation conservation, research is now focusing on creation information systems where link digital representation building semantic knowledge. reference emblematic case study Calci Charterhouse, also known as Pisa this contribution illustrates an approach be followed in transition from 3D survey information, derived laser...

The reconstruction of 3D geometries starting from reality-based data is challenging and time-consuming due to the difficulties involved in modeling existing structures complex nature built heritage. This paper presents a methodological approach for automated segmentation classification surveying outputs improve interpretation building information laser scanning photogrammetric data. research focused on reticular, space grid late 19th–20th–21st centuries, as part our architectural heritage,...

Today, digital tools represent a privileged means of describing and understanding cultural heritage. However, existing hybrid methods for semantic annotation on models are mostly manual require considerable human intervention. This may cause data dispersion or alteration issues, preventing the collection multidisciplinary heritage information in collaborative valorization conservation projects. Tackling this problem, work presents three different more automated 2D/3D annotation, making most...

Abstract. This research aims to assess the adaptability of Neural Radiance Fields (NeRF) for digital documentation cultural heritage objects varying size and complexity. We discuss influence object size, desired scale representation, level detail on choice use NeRF documentation, providing insights practitioners in field. Case studies range from historic pavements architectural elements or buildings, representing diverse multi-scale scenarios encountered procedures. The findings suggest that...

Abstract. Cultural heritage includes several cases of missing architectural element or entire buildings, due to destruction, replacement radical changes caused over time by other structures. The investigation these lost elements aimed at their virtual reconstruction, for both scientific and cultural-leisure applications, is therefore a topic great interest. To this purpose, methodologies surveying photogrammetric processing provide very powerful tool, extracting descriptive geometric...

Abstract. Cultural heritage information systems, such as H-BIM, are becoming more and widespread today, thanks to their potential bring together, around a 3D representation, the wealth of knowledge related given object study. However, reconstruction tools starting from architectural surveying is still largely deemed lengthy time-consuming process, with inherent complexities managing interpreting unstructured unorganized data derived, e.g., laser scanning or photogrammetry. Tackling this...

Abstract. This paper aims to illustrate the preliminary results of a research project on dome Pisa Cathedral (Italy). The final objective present is achieve deep understanding structural behaviour dome, through detailed knowledge its geometry and constituent materials, by taking into account historical architectural aspects as well. A reliable survey essential starting point for any further investigation adequate modelling. Examination status quo surveys shows that suitable analysis in fact...

Abstract. In the restoration of frescoed vaults it is not only important to know geometric shape painted surface, but essential document its chromatic characterization and conservation status. The new techniques range-based image-based modelling, each with limitations advantages, offer a wide range methods obtain shape. fact, several studies widely that laser scanning enable obtaining three-dimensional models high morphological precision. However, quality level colour obtained built-in...

In the field of documentation and preservation cultural heritage, there is keen interest in 3D metric viewing rendering architecture for both formal appearance color. On other hand, operative steps restoration interventions still require full-scale, 2D surface representations. The transition from to representation, with related geometric transformations, has not yet been fully formalized planar development frescoed vaults. Methodologies proposed so far on this subject provide transitioning...

Abstract. Management of disaster scenarios requires applying emergency procedures ensuring maximum safety and protection for field operators. Actual conditions sites are labelled as “Triple-D: Dull, Dusty, Dangerous” areas. It is well known that in this kind areas situations remote surveying systems at their very best effective, among these UAVs currently an effective performing tool. Indoor spaces a particularly complex scenario surveys. In case, technological advances offer micro-UAV...

Territorial management requires the most possible up-to-date mapping support of status quo. Regional scale cartography update cycle is in medium term (10 to 15 years): therefore, intervening time between updates relevant Authorities must provide timely for new works or territorial changes. Required surveys can exploit several technologies: ground-based GPS, Terrestrial Laser Scanning (TLS), traditional topography, or, case wider areas, airborne photogrammetry laser scanning. In recent years...

Abstract. The historical architectural heritage may be considered as the product of a complex system interaction between several factors - cultural, socio-economic, technical, aesthetic etc. restoration and conservation this important heritage, therefore, requires necessarily multidisciplinary approach, both in preliminary phase knowledge operative one, strictly connected to first, regarding development works all their steps, from project realization. historical-critical analysis...

Abstract. Purpose of this paper is to compare different methods for the assessment earthquake-induced damage on buildings based survey data, referring case study Castelluccio di Norcia. The seismic events that occurred in Central Italy 2016 threatened future many villages located along Apennine ridge straddling Regions Umbria, Marche, Abruzzo and Lazio: Norcia, a minor historical center Municipality Norcia (Umbria), earthquake August 24th caused some localized buildings, but strongest event...