scholarly journals Survey of 3D digital heritage repositories and platforms

2020 ◽  
Vol 11 (23) ◽  
pp. 1 ◽  
Author(s):  
Erik Champion ◽  
Hafizur Rahaman
Keyword(s):  
3D Model ◽  
Three Dimensional ◽  
Digital Models ◽  
Heritage Sites ◽  
Digital Heritage ◽  
Virtual Heritage ◽  
Academic Publications ◽  
Relative Potential ◽  
3D Digital Models ◽  
Digital Assets

<p class="VARAbstract">Despite the increasing number of three-dimensional (3D) model portals and online repositories catering for digital heritage scholars, students and interested members of the general public, there are very few recent academic publications that offer a critical analysis when reviewing the relative potential of these portals and online repositories. Solid reviews of the features and functions they offer are insufficient; there is also a lack of explanations as to how these assets and their related functionality can further the digital heritage (and virtual heritage) field, and help in the preservation, maintenance, and promotion of real-world 3D heritage sites and assets. What features do they offer? How could their feature list better cater for the needs of the GLAM (galleries, libraries, archives and museums) sector? This article’s priority is to examine the useful features of 8 institutional and 11 commercial repositories designed specifically to host 3D digital models. The available features of their associated 3D viewers, where applicable, are also analysed, connecting recommendations for future-proofing with the need to address current gaps and weaknesses in the scholarly field of 3D digital heritage. Many projects do not address the requirements stipulated by charters, such as access, reusability, and preservation. The lack of preservation strategies and examples highlights the oxymoronic nature of virtual heritage (oxymoronic in the sense that the virtual heritage projects themselves are seldom preserved). To study these concerns, six criteria for gauging the usefulness of the 3D repositories to host 3D digital models and related digital assets are suggested. The authors also provide 13 features that would be useful additions for their 3D viewers.</p><p>Highlights:</p><ul><li><p>A survey of relevant features from eight institutional and eleven commercial online 3D repositories in the scholarly fieldof 3D digital heritage.</p></li><li><p>Presents a critical review of their hosting services and 3D model viewer features.</p></li><li><p>Proposes six features to enhance services of 3D repositories to support the GLAM sector, heritage scholars andheritage communities.</p></li></ul>

scholarly journals Promoting a More Interactive Public Archaeology

2015 ◽  
Vol 3 (3) ◽  
pp. 235-248 ◽  
Author(s):  
Bernard K. Means
Keyword(s):  
Narrow Band ◽  
Three Dimensional ◽  
Laser Scanner ◽  
Public Archaeology ◽  
Archaeological Sites ◽  
Digital Models ◽  
The Past ◽  
Fresh Perspective ◽  
Virginia Commonwealth University ◽  
3D Digital Models

AbstractStewards of the tangible past are increasingly embracing technologies that enable digital preservation of rare and fragile finds. The Virtual Curation Laboratory (VCL) at Virginia Commonwealth University (VCU) partners with museums, cultural heritage locations, and collections repositories to create three-dimensional (3D) digital models of artifacts from archaeological sites distributed across the globe. In the VCL, undergraduate VCU students bring a fresh perspective unburdened by archaeological orthodoxy as they use a laser scanner to record artifact details, edit the resulting digital models, and print plastic replicas that are painted to resemble the original items. The 3D digital models and printed replicas allow for new ways of visualizing the past, while preserving the actual artifacts themselves. These forms of archaeological visualization enable the broader public and not just a narrow band of researchers to dynamically and meaningfully interact with rare and fragile objects in ways that would otherwise not be possible, empowering their own contributions to interpreting, understanding, and reimagining the past. We must embrace co-creation through virtual artifact curation and recognize that, while we sacrifice some control over the stories that are told about the past, more stories will be told and shared as pieces of the past become more accessible.

A Fast Mask Projection Stereolithography Process for Fabricating Digital Models in Minutes

2012 ◽  
Vol 134 (5) ◽  
Author(s):  
Yayue Pan ◽  
Chi Zhou ◽  
Yong Chen
Keyword(s):  
High Speed ◽  
Experimental Studies ◽  
Three Dimensional ◽  
Thin Layers ◽  
Digital Models ◽  
Projection System ◽  
Order Of Magnitude ◽  
Projection Stereolithography ◽  
Direct Digital Manufacturing ◽  
3D Digital Models

The purpose of this paper is to present a direct digital manufacturing (DDM) process that is an order of magnitude faster than other DDM processes that are currently available. The developed process is based on a mask-image-projection-based stereolithography (MIP-SL) process, in which a digital micromirror device (DMD) controls projection light to selectively cure liquid photopolymer resin. In order to achieve high-speed fabrication, we investigate the bottom-up projection system in the MIP-SL process. A two-way linear motion approach has been developed for the quick spreading of liquid resin into uniform thin layers. The system design and related settings for achieving a fabrication speed of a few seconds per layer are presented. Additionally, the hardware, software, and material setups for fabricating three-dimensional (3D) digital models are presented. Experimental studies using the developed testbed have been performed to verify the effectiveness and efficiency of the presented fast MIP-SL process. The test results illustrate that the newly developed process can build a moderately sized part within minutes instead of hours that are typically required.

scholarly journals 3D Printing of Human Microbiome Constituents to Understand Spatial Relationships & Shape Parameters in Bacteriology

2021 ◽  
Vol 83 (3) ◽  
pp. 188-190
Author(s):  
Jacques Izard ◽  
Teklu Kuru Gerbaba ◽  
Shara R. P. Yumul
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Human Microbiome ◽  
Digital Models ◽  
Ecological Relationships ◽  
Wide Range ◽  
3D Printers ◽  
Visuospatial Information ◽  
Aided Design ◽  
3D Digital Models

Effective laboratory and classroom demonstration of microbiome size and shape, diversity, and ecological relationships is hampered by a lack of high-resolution, easy-to-use, readily accessible physical or digital models for use in teaching. Three-dimensional (3D) representations are, overall, more effective in communicating visuospatial information, allowing for a better understanding of concepts not directly observable with the unaided eye. Published morphology descriptions and microscopy images were used as the basis for designing 3D digital models, scaled at 20,000×, using computer-aided design software (CAD) and generating printed models of bacteria on mass-market 3D printers. Sixteen models are presented, including rod-shaped, spiral, flask-like, vibroid, and filamentous bacteria as well as different arrangements of cocci. Identical model scaling enables direct comparison as well as design of a wide range of educational plans.

scholarly journals Three-Dimensional Measurement and Three-Dimensional Printing of Giant Coastal Rocks

2021 ◽  
Vol 10 (6) ◽  
pp. 404
Author(s):  
Zhiyi Gao ◽  
Akio Doi ◽  
Kenji Sakakibara ◽  
Tomonaru Hosokawa ◽  
Masahiro Harata
Keyword(s):  
Effective Means ◽  
Measurement Techniques ◽  
Three Dimensional ◽  
Satellite System ◽  
Shape Reconstruction ◽  
3D Measurement ◽  
Digital Models ◽  
Cloud Data ◽  
3D Shape Reconstruction ◽  
3D Digital Models

In recent years, the use of three-dimensional (3D) measurement and printing technologies has become an effective means of analyzing and reproducing both physical and natural objects, regardless of size. However, in some complex environments, such as coastal environments, it is difficult to obtain the required data by conventional measurement methods. In this paper, we describe our efforts to archive and digitally reproduce a giant coastal rock formation known as Sanouiwa, a famous site off the coast of Miyako City, Iwate Prefecture, Japan. We used two different 3D measurement techniques. The first involved taking pictures using a drone-mounted camera, and the second involved the use of global navigation satellite system data. The point cloud data generated from the high-resolution camera images were integrated using 3D shape reconstruction software, and 3D digital models were created for use in tourism promotion and environmental protection awareness initiatives. Finally, we fabricated the 3D digital models of the rocks with 3D printers for use as museum exhibitions, school curriculum materials, and related applications.

scholarly journals Ksar Said: Building Tunisian Young People’s Critical Engagement with Their Heritage

2019 ◽  
Vol 11 (5) ◽  
pp. 1373
Author(s):  
Paola Di Giuseppantonio Di Franco ◽  
Mark Winterbottom ◽  
Fabrizio Galeazzi ◽  
Mike Gogan
Keyword(s):  
3D Model ◽  
Three Dimensional ◽  
Education History ◽  
British Council ◽  
Heritage Sites ◽  
Critical Engagement ◽  
Novel Approach ◽  
Term Evaluation ◽  
Interactive 3D ◽  
The 19Th Century

This paper describes the work undertaken as part of the ‘Digital Documentation of Ksar Said’ Project. This project, funded by the British Council, combined education, history, and heritage for the digital preservation of tangible and intangible aspects of heritage associated with the 19th century Said Palace (Ksar Said) in Tunis. We produced an interactive 3D model of Ksar Said and developed learning resources to build Tunisian students’ critical engagement with their heritage through inquiry learning activities within the 3D model. We used a user-centred approach, based on pre-assessment (i.e., co-creation of contents), mid-term evaluation (i.e., feedback on contents and preliminary design of virtual activities), and post-assessment design (i.e., user trial). Our results demonstrate the potential of this novel approach to virtual learning and inform future co-design, evaluation and implementation choices for improving the generative power of three dimensional virtual replication of heritage sites in the cultural heritage sector.

The reliability of Little's Irregularity Index for the upper dental arch using three dimensional (3D) digital models

2014 ◽  
Vol 42 (10) ◽  
pp. 1320-1326 ◽  
Author(s):  
Angus Burns ◽  
Adam H. Dowling ◽  
Thérèse M. Garvey ◽  
Garry J.P Fleming
Keyword(s):  
Three Dimensional ◽  
Dental Arch ◽  
Digital Models ◽  
Irregularity Index ◽  
3D Digital Models

scholarly journals Direct 3D model extraction method for color volume images

2021 ◽  
Vol 29 ◽  
pp. 133-140
Author(s):  
Bin Liu ◽  
Shujun Liu ◽  
Guanning Shang ◽  
Yanjie Chen ◽  
Qifeng Wang ◽  
...  
Keyword(s):  
3D Model ◽  
Clinical Medicine ◽  
Three Dimensional ◽  
Laplacian Matrix ◽  
Segmentation Method ◽  
Human Organs ◽  
Model Segmentation ◽  
Treatment Objective ◽  
Organ Models ◽  
Different Parts

BACKGROUND: There is a great demand for the extraction of organ models from three-dimensional (3D) medical images in clinical medicine diagnosis and treatment. OBJECTIVE: We aimed to aid doctors in seeing the real shape of human organs more clearly and vividly. METHODS: The method uses the minimum eigenvectors of Laplacian matrix to automatically calculate a group of basic matting components that can properly define the volume image. These matting components can then be used to build foreground images with the help of a few user marks. RESULTS: We propose a direct 3D model segmentation method for volume images. This is a process of extracting foreground objects from volume images and estimating the opacity of the voxels covered by the objects. CONCLUSIONS: The results of segmentation experiments on different parts of human body prove the applicability of this method.

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