scholarly journals FROM SURVEY TO 3D MODELLING TO DIGITAL FABRICATION. A WORKFLOW AIMED AT DOCUMENTING AND TRANSMITTING BUILT HERITAGE

2021 ◽  
Vol XLIII-B2-2021 ◽  
pp. 619-626
Author(s):  
R. Spallone ◽  
M. C. López González ◽  
M. Vitali ◽  
G. Bertola ◽  
F. Natta ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Three Dimensional ◽  
Digital Fabrication ◽  
Physical Models ◽  
Architectural Features ◽  
Design For All ◽  
Three Dimensional Models ◽  
The Many ◽  
Knowledge Survey ◽  
Historic City

Abstract. This contribution illustrates the results of research that aims to connect the workflow for knowledge – survey, interpretation, modeling – to the transmission of this knowledge and enhancement of Cultural Heritage by physical models, demonstrating its potential in a “Design for All” perspective. Palazzo Mazzonis, the current seat of the MAO (Museo d’Arte Orientale), is one of the many buildings in the historic city center of Turin characterized by a particular complex vaulted atrium: it has been investigated through TLS survey tools for the production of two-dimensional drawings (for the detailed representation of architectural features) and three-dimensional models (for the interpretation of the design idea through geometry). The last phase of work aims to translate the interpretative digital models into tactile models for Cultural Heritage transmission, through processes of digital fabrication, with obvious impacts on the visit path inside the museum, also with didactic purposes.

scholarly journals Comparative Analysis of Digital Models of Objects of Cultural Heritage Obtained by the “3D SLS” and “SfM” Methods

2021 ◽  
Vol 11 (12) ◽  
pp. 5321
Author(s):  
Marcin Barszcz ◽  
Jerzy Montusiewicz ◽  
Magdalena Paśnikowska-Łukaszuk ◽  
Anna Sałamacha
Keyword(s):  
Cultural Heritage ◽  
Low Cost ◽  
Three Dimensional ◽  
3D Models ◽  
Silk Road ◽  
Digital Models ◽  
Global Pandemic ◽  
University Of Technology ◽  
Three Dimensional Models ◽  
3D Digitisation

In the era of the global pandemic caused by the COVID-19 virus, 3D digitisation of selected museum artefacts is becoming more and more frequent practice, but the vast majority is performed by specialised teams. The paper presents the results of comparative studies of 3D digital models of the same museum artefacts from the Silk Road area generated by two completely different technologies: Structure from Motion (SfM)—a method belonging to the so-called low-cost technologies—and by Structured-light 3D Scanning (3D SLS). Moreover, procedural differences in data acquisition and their processing to generate three-dimensional models are presented. Models built using a point cloud were created from data collected in the Afrasiyab museum in Samarkand (Uzbekistan) during “The 1st Scientific Expedition of the Lublin University of Technology to Central Asia” in 2017. Photos for creating 3D models in SfM technology were taken during a virtual expedition carried out under the “3D Digital Silk Road” program in 2021. The obtained results show that the quality of the 3D models generated with SfM differs from the models from the technology (3D SLS), but they may be placed in the galleries of the vitrual museum. The obtained models from SfM do not have information about their size, which means that they are not fully suitable for archiving purposes of cultural heritage, unlike the models from SLS.

scholarly journals Dissemination Strategies for Cultural Heritage: The Case of the Tomb of Zechariah in Jerusalem, Israel

Heritage ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 306-314
Author(s):  
Monica Bercigli
Keyword(s):  
Cultural Heritage ◽  
Scientific Information ◽  
Three Dimensional ◽  
3D Models ◽  
Digital Products ◽  
Survey Techniques ◽  
Survey Technique ◽  
Three Dimensional Models ◽  
Visualization Techniques ◽  
Historical References

This paper reports the research carried out using Structure from Motion survey techniques, which were developed on the basis of previous surveys and their subsequent representation through two-dimensional (2D) and three-dimensional (3D) drawings of the tomb, comparing them with drawings and watercolors by several painters of the past. This survey technique enables the reconstruction of three-dimensional models through photographs. The aim of this work is to define a procedural process which allows accurate and reliable three-dimensional reconstructions to be performed for the acquisition of knowledge and the dissemination of cultural heritage, taking advantage of representation and visualization techniques that have been developed in the last decade and that are based on historical references. The variety of digital products which can be produced (video games, 3D models, prints, websites, and augmented reality applications) allows a different approach to the representation to be taken, thereby re-evaluating limits, aims, and expressive potential. The virtual representative systems, enriched with cultural content, scientific information, and data, enhance the participation and awareness of knowledge of the final users of the products and are able to increase the interaction between the user and the information.

scholarly journals AS-BUILT RELIABILITY IN ARCHITECTURAL HBIM MODELING

2019 ◽  
Vol XLII-2/W9 ◽  
pp. 461-466 ◽  
Author(s):  
P. Maiezza
Keyword(s):  
Cultural Heritage ◽  
Three Dimensional ◽  
The Other ◽  
Reference Standard ◽  
Historical Buildings ◽  
Building Information Modelling ◽  
Architectural Features ◽  
Other Information ◽  
Building Information ◽  
The Relationship

<p><strong>Abstract.</strong> The As-Built Model cannot be considered as a simple three-dimensional mould of the studied reality but as a process of analysis, synthesis and communication of architectural complexity including, in addition to geometric-dimensional aspects, also the historical, aesthetic and architectural features of the building. Consequently, the transparency and reliability issues of the digital visualization constitutes, as well as for the field of archaeology, a matter of primary importance in the modelling of cultural heritage. The increasing interest of scholars in the application of Building Information Modelling (BIM) to historical buildings has renewed the problems related to the reliability of the As-built, related not only to the relationship between the model and the measure, but also to the other information, for example the constructive technologies. Based on the survey and modelling of some case studies, the paper's aim is to define a reference standard for the reliability declaration of the As-Built HBIM models, which considers both the geometric and information aspects.</p>

scholarly journals SERIAL RECONSTRUCTION OF THE CHARACTERISTIC GRANULE OF THE LANGERHANS CELL

1968 ◽  
Vol 36 (3) ◽  
pp. 595-602 ◽  
Author(s):  
Richard W. Sagebiel ◽  
Thomas H. Reed
Keyword(s):  
Electron Microscope ◽  
Electron Micrographs ◽  
Three Dimensional ◽  
Langerhans Cell ◽  
Human Epidermis ◽  
Dimensional Structure ◽  
Serial Sections ◽  
Three Dimensional Structure ◽  
Three Dimensional Models ◽  
The Many

Three-dimensional models of individual granules in the same Langerhans cell were made after analyzing serial sections of human epidermis in the electron microscope. These models revealed that the granule is made up of a flattened or curved orthogonal net of particles which is bounded externally by a limiting membrane and which may be disc-shaped, cup-shaped, or combinations of both shapes. This variety of shapes accounts for the many configurations of the granule seen in individual electron micrographs. Usually, the granule has a vesicular portion at, or near one margin. This demonstration of the three-dimensional structure of the granule establishes the inaccuracy of previously used descriptive terms, the granule should be called simply the "Langerhans cell granule."

scholarly journals 3D LOW-COST ACQUISITION FOR THE KNOWLEDGE OF CULTURAL HERITAGE: THE CASE STUDY OF THE BUST OF SAN NICOLA DA TOLENTINO

2019 ◽  
Vol XLII-2/W17 ◽  
pp. 93-100
Author(s):  
A. Cardaci ◽  
A. Versaci ◽  
P. Azzola
Keyword(s):  
3D Reconstruction ◽  
Cultural Heritage ◽  
Low Cost ◽  
Three Dimensional ◽  
3D Models ◽  
Photographic Images ◽  
Reconstruction Software ◽  
Cultural Sphere ◽  
Three Dimensional Models

Abstract. The creation of three-dimensional models for the cataloguing and documentation of cultural heritage is today an emerging need in the cultural sphere and, above all, for museums. The cultural heritage is still catalogued and documented based on descriptive files assorted of photographic images which, however, fail to outline its spatial richness, possible only through the use of 3D artefacts. The essay aims to propose a methodology of digitalization by low-cost and easy-to-use systems, to be employed even by non-expert survey and photogrammetry’s operators. The case study of the statue of San Nicola da Tolentino, preserved at the Sant’Agostino complex in Bergamo, offered the possibility of a comparison between 3D models acquired with different digitalization tools (professional/action/amateur cameras and smartphone) and processed by several image-based 3D Reconstruction software and methods.

scholarly journals Three-dimensional physical models of sedimentary basins as a resource for teaching-learning of geology

2018 ◽  
Vol 14 (4) ◽  
pp. 379-384 ◽  
Author(s):  
Celso Dal Ré Carneiro ◽  
Kauan Martins dos Santos ◽  
Thiago Rivaben Lopes ◽  
Filipe Constantino dos Santos ◽  
Jorge Vicente Lopes da Silva ◽  
...  
Keyword(s):  
Computational Models ◽  
Three Dimensional ◽  
Spatial Vision ◽  
Sedimentary Basins ◽  
3D Models ◽  
Physical Models ◽  
3D Objects ◽  
Three Dimensional Modeling ◽  
Three Dimensional Models ◽  
Teaching Learning

Three-dimensional modeling connects several fields of knowledge, both basic and applied. 3D models are relevant in educa-tional research because the manipulation of 3D objects favors students' acquisition of spatial vision, but in the Geosciences, there are few didactic publications in Portuguese on the subject. The authors develop an educational research project to produce three-dimensional models of didactic examples of sedimentary basins: the Paraná Basin (Silurian-Upper Cretaceous), the Tau-baté and the São Paulo basins (Neogene). 3D-compatible files will be produced to compose didactic and display material, from maps and geological-structural profiles of certain regional stratigraphic levels of each basin. The research challenges are: (a) to obtain an overview of the available resources for 3D modeling; (b) to evaluate their potential, characteristics, advantages and limitations for applications in Geology and Geosciences; (c) to create computational models of the basins; (d) to produce at least one physical model based on one of the computational models of each basin. The resources will subsidize training work-shops for in-service teachers, technical-scientific articles and Internet pages.

scholarly journals HANDY MICROSCOPIC CLOSE-RANGE VIDEOGRAMMETRY

2017 ◽  
Vol XLII-4/W4 ◽  
pp. 65-67
Author(s):  
F. Esmaeili ◽  
H. Ebadi
Keyword(s):  
Cultural Heritage ◽  
Three Dimensional ◽  
Small Scale ◽  
Self Calibration ◽  
Close Range ◽  
Dimensional Models ◽  
Three Dimensional Models

The modeling of small-scale objects is used in different applications such as medicine, industry, and cultural heritage. The capability of modeling small-scale objects using imaging with the help of hand USB digital microscopes and use of videogrammetry techniques has been implemented and evaluated in this paper. Use of this equipment and convergent imaging of the environment for modeling, provides an appropriate set of images for generation of three-dimensional models. The results of the measurements made with the help of a microscope micrometer calibration ruler have demonstrated that self-calibration of a hand camera-microscope set can help obtain a three-dimensional detail extraction precision of about 0.1 millimeters on small-scale environments.

DIGITAL 3D MODELS OF MINERALS AND ROCKS IN A NUTSHELL: ENHANCING SCIENTIFIC, LEARNING, AND CULTURAL HERITAGE ENVIRONMENTS IN GEOSCIENCES BY USING CROSS-POLARIZED LIGHT PHOTOGRAMMETRY

2021 ◽  
Vol 16 (1) ◽  
pp. 237-249
Author(s):  
Andrei-Ionuț APOPEI ◽  
◽  
Nicolae BUZGAR ◽  
Andrei BUZATU ◽  
Andreea-Elena MAFTEI ◽  
...  
Keyword(s):  
Cultural Heritage ◽  
Feature Detection ◽  
Three Dimensional ◽  
Polarized Light ◽  
3D Models ◽  
Geoscience Education ◽  
Detection Algorithms ◽  
Comprehensive Method ◽  
Three Dimensional Models ◽  
Scientific Learning

Three-dimensional (3D) minerals and rocks in the form of interactive, engaging, and immersive experiences are of paramount importance to the geoscience community, researchers, students, and philomaths. Moreover, the SARS-CoV-2 (COVID-19) crisis affecting our society in the spring of 2020 highlighted the importance of 3D material in geoscience education — compared to 2D images, the three-dimensional models provide a better way to learn and to recognize different minerals and rocks, properties, textures, etc. This paper seeks to provide a comprehensive method to create an interactive scientific, learning, and cultural heritage environment in the field of Geosciences. In this paper, we overcome most of the Structure-from-Motion - Multi-View Stereo (SfM-MVS) photogrammetry limitations, where samples with a transparent, translucent, or glossy surface are a real challenge for the feature detection algorithms of the SfM workflow. Correct lighting setup, the usage of cross-polarized light photogrammetry workflow, anti-reflection coating spray and post-processing steps are the essential ingredients for an enhanced photogrammetric study. The main output of this research consists of a comprehensive virtual 3D collection of minerals and rocks which are available online via the Sketchfab repository of the Museum of Mineralogy and Petrography “Grigore Cobălcescu” (https://sketchfab.com/MineralogyPetrographyMuseum).

scholarly journals Use of close-range photogrammetry and UAV in documentation of architecture monuments

2018 ◽  
Vol 71 ◽  
pp. 00017 ◽  
Author(s):  
Gabriela Wojciechowska ◽  
Jakub Łuczak
Keyword(s):  
Cultural Heritage ◽  
Three Dimensional ◽  
3D Models ◽  
Digital Model ◽  
Close Range Photogrammetry ◽  
Close Range ◽  
Architectural Structures ◽  
Three Dimensional Models ◽  
Terrestrial Photogrammetry ◽  
Protection Of Cultural Heritage

The available photogrammetric solutions, combined with properly conducted surveying measurements enable to create fully applicable, three-dimensional models of architectural structures, which can be applied in, i.e. protection of cultural heritage or conservational documentation. Currently, we can see an increase in use of digital non-metric cameras in a photogrammetric inventory of sacred monuments. Properly obtained and analysed data allow to create a digital model of an object, which later might serve as a basis for a vector image used for architectural and construction purposes. The paper presents the procedure of creation of 3D models of sacred historic monuments of relatively small sizes with the use of terrestrial photogrammetry and UAV using the Agisoft PhotoScan Professional software.

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