scholarly journals Automatic 3D Modeling and Reconstruction of Cultural Heritage Sites from Twitter Images

2020 ◽  
Vol 12 (10) ◽  
pp. 4223 ◽  
Author(s):  
Anastasios Doulamis ◽  
Athanasios Voulodimos ◽  
Eftychios Protopapadakis ◽  
Nikolaos Doulamis ◽  
Konstantinos Makantasis

This paper presents an approach for leveraging the abundance of images posted on social media like Twitter for large scale 3D reconstruction of cultural heritage landmarks. Twitter allows users to post short messages, including photos, describing a plethora of activities or events, e.g., tweets are used by travelers on vacation, capturing images from various cultural heritage assets. As such, a great number of images are available online, able to drive a successful 3D reconstruction process. However, reconstruction of any asset, based on images mined from Twitter, presents several challenges. There are three main steps that have to be considered: (i) tweets’ content identification, (ii) image retrieval and filtering, and (iii) 3D reconstruction. The proposed approach first extracts key events from unstructured tweet messages and then identifies cultural activities and landmarks. The second stage is the application of a content-based filtering method so that only a small but representative portion of cultural images are selected to support fast 3D reconstruction. The proposed methods are experimentally evaluated using real-world data and comparisons verify the effectiveness of the proposed scheme.

2021 ◽  
Vol 11 (8) ◽  
pp. 3635
Author(s):  
Ioannis Liritzis ◽  
Pantelis Volonakis ◽  
Spyros Vosinakis

In the field of cultural heritage, three-dimensional (3D) reconstruction of monuments is a usual activity for many professionals. The aim in this paper focuses on the new technology educational application combining science, history, and archaeology. Being involved in almost all stages of implementation steps and assessing the level of participation, university students use tools of computer gaming platform and participate in ways of planning the virtual environment which improves their education through e-Learning. The virtual 3D environment is made with different imaging methods (helium-filled balloon, Structure for motion, 3D repository models) and a developmental plan has been designed for use in many future applications. Digital tools were used with 3D reconstructed buildings from the museum archive to Unity 3D for the design. The pilot study of Information Technology work has been employed to introduce cultural heritage and archaeology to university syllabuses. It included students with a questionnaire which has been evaluated accordingly. As a result, the university students were inspired to immerse themselves into the virtual lab, aiming to increasing the level of interaction. The results show a satisfactory learning outcome by an easy to use and real 3D environment, a step forward to fill in needs of contemporary online sustainable learning demands.


2019 ◽  
pp. 129-139
Author(s):  
Tamara Mykolayivna Kurach ◽  
Iryna Aleksandrovna Pidlisetskaya

The goal is to develop a tourist interactive map "Landmarks of Bohuslav". The methodology. The methodological and theoretical basis of the study is modern geographical and cartographic science in the field of thematic mapping with the involvement of web-mapping technologies. Results. A large-scale tourist web map of the cultural heritage of the Boguslavsky region - “Sights of Boguslavshchina” was created. Scientific novelty. Approbation of the methodology and technology for the development of interactive large-scale web maps of tourism topics involving the Leaflet JavaScript library. Practical value. An interactive tourist web map of the historical and cultural heritage sites “Sights of Bohuslavshchina” will be published on the website of the health-improving institution of sanatorium-type “Chaika”. Convenient using, visualization, prompt receipt of information will help to increase the attractiveness of tourist Boguslavschina routes.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Francesca Giuliani ◽  
Rosa Grazia De Paoli ◽  
Enrica Di Miceli

PurposeThe purpose of this paper is to present and validate a large-scale methodology for risk assessment and management in cultural heritage sites, taking into account their specific tangible or intangible values. Emphasis is given to historic centres that are key resources in building resilience to disasters but are also highly vulnerable due to several factors, such as the characteristics of the built environment, the community and social life, the lack of risk awareness and maintenance and finally the poor regulatory framework for their management and valorisation.Design/methodology/approachThe multi-step procedure starts from the assessment of the attributes of cultural heritage in order to identify priorities and address the analysis. Then, it evaluates the primary and secondary hazards in the area, the vulnerabilities and threats of the site and the impacts of the chain of events. Finally, it allows for calibrating a site-specific set of mitigation, preparedness, response and recovery measures.FindingsThe application to two case studies in the Italian peninsula, the historic centres of San Gimignano and Reggio Calabria, allows for identifying research gaps and practical opportunities towards the adoption of common guidelines for the selection of safety measures.Originality/valueBy providing a qualitative assessment of risks, the research points out the potentialities of the methodology in the disaster risk management of cultural heritage due to its capacity to be comprehensive and inclusive towards disciplines and professionals.


2020 ◽  
Vol 18 (1) ◽  
pp. 1-18
Author(s):  
Tim Forssman ◽  
Matt Lotter ◽  
John Parkington ◽  
Jeremy Hollmann ◽  
Jessica Angel ◽  
...  

Abstract Much of Lesotho’s cultural heritage has been studied as a result of dam developments. Where dams have been built, heritage studies have provided crucial data for improving our understanding of local archaeological sequences. Ahead of the construction of the Lesotho Highland Development Authority’s (LHDA) new Polihali Dam in Lesotho’s Mokhotlong District and following the recommendations of a heritage assessment (CES 2014), a large-scale five-year cultural heritage management program was launched in 2018 that seeks to excavate and mitigate a number of heritage sites. Here, we provide the background to one of southern Africa’s largest heritage mitigation contracts by contextualising the current research program. We then present the archaeology of Lesotho’s eastern highlands basalt region using data collected during the inception phase of this program. The findings challenge current preconceived notions about the sparsity of archaeological remains for this region.


Author(s):  
A. Georgopoulos ◽  
C. Oikonomou ◽  
E. Adamopoulos ◽  
E. K. Stathopoulou

When it comes to large scale mapping of limited areas especially for cultural heritage sites, things become critical. Optical and non-optical sensors are developed to such sizes and weights that can be lifted by such platforms, like e.g. LiDAR units. At the same time there is an increase in emphasis on solutions that enable users to get access to 3D information faster and cheaper. Considering the multitude of platforms, cameras and the advancement of algorithms in conjunction with the increase of available computing power this challenge should and indeed is further investigated. In this paper a short review of the UAS technologies today is attempted. A discussion follows as to their applicability and advantages, depending on their specifications, which vary immensely. The on-board cameras available are also compared and evaluated for large scale mapping. Furthermore a thorough analysis, review and experimentation with different software implementations of Structure from Motion and Multiple View Stereo algorithms, able to process such dense and mostly unordered sequence of digital images is also conducted and presented. As test data set, we use a rich optical and thermal data set from both fixed wing and multi-rotor platforms over an archaeological excavation with adverse height variations and using different cameras. Dense 3D point clouds, digital terrain models and orthophotos have been produced and evaluated for their radiometric as well as metric qualities.


Author(s):  
V. A. Girelli ◽  
L. Borgatti ◽  
M. Dellapasqua ◽  
E. Mandanici ◽  
M. C. Spreafico ◽  
...  

The research activities described in this contribution were carried out at San Leo (Italy). The town is located on the top of a quadrangular rock slab affected by a complex system of fractures and has a wealth of cultural heritage, as evidenced by the UNESCO’s nomination.<br><br> The management of this fragile set requires a comprehensive system of geometrical information to analyse and preserve all the geological and cultural features. In this perspective, the latest Geomatics techniques were used to perform some detailed surveys and to manage the great amount of acquired geometrical knowledge of both natural (the cliff) and historical heritage. All the data were also georeferenced in a unique reference system.<br><br> In particular, high accurate terrestrial laser scanner surveys were performed for the whole cliff, in order to obtain a dense point cloud useful for a large number of geological studies, among others the analyses of the last rockslide by comparing pre- and post-event data.<br><br> Moreover, the geometrical representation of the historical centre was performed using different approaches, in order to generate an accurate DTM and DSM of the site. For these purposes, a large scale numerical map was used, integrating the data with GNSS and laser surveys of the area.<br><br> Finally, many surveys were performed with different approaches on some of the most relevant monuments of the town. In fact, these surveys were performed by terrestrial laser scanner, light structured scanner and photogrammetry, the last mainly applied with the Structure from Motion approach.


Heritage ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 316-332
Author(s):  
Ying Liu ◽  
Hui-Wen Lin

Interpretation and presentation is an essential component of the whole heritage conservation process. In response to the new opportunities and challenges arising from the changing perspectives on heritage conservation, the development of display technologies and the rise of cultural tourism, it becomes a challenging task for cultural heritage institutions to construct a systematic interpretation and presentation system of a cultural heritage site that can effectively communicate heritage significance and value to the public and provide visitors with positive and valuable experience. From four main aspects (site, technology, public, and education and research), this research provides a comprehensive overview of the implementation details of the interpretation and presentation system of Old Zuoying City, which is considered an unprecedented large-scale cultural heritage preservation plan in Taiwan, through participative site investigation and in-depth interviews, thereby providing a reference for the construction, implementation, and management of interpretation and presentation system at cultural heritage sites.


Author(s):  
Viktor Vecherskyi

The purpose of the article is to analyze the monument and expert assessment of the monument of garden and park art Central Republican Botanical Garden (1 Timiriazievska Street, Kyiv) and its urban environment, which is rapidly evolving, threatening this monument naturally of the reserved fund and cultural heritage sites located on its territory, which requires the development of the protection zoning concept in the areas adjacent to the monument in order to preserve this unique cultural and natural heritage. The research methodology is based on the use of general scientific and special methods, including the historical method in a systematic approach, when the set of monuments connected by a common area, as well as the surrounding environment as an object of study is considered in development, as well as the comparative method, analysis and synthesis, deduction and induction. The scientific novelty of the research is that for the first time a comprehensive analysis of this monument of park and garden art as an object not only of nature reserves, but also immovable cultural heritage type ‘landmark’, articulated problems caused by rapid and chaotic development urban environment around this monument, and also proposed a conceptual approach to the protective zoning of areas around the monument. Conclusions. All cultural heritage sites, including the Central Republican Botanical Garden as an object of study, form the traditional nature of the environment of the southern periphery of the historic centre of Kyiv. The object of study for its compositional role in the traditional nature of the environment is the landscape dominant of the large-scale monument ‘Cultural Landscape of the Kyiv Mountains and the Dnieper River Valley’, the compositional and species influence of which extends to the entire Dnieper Valley between the E. Paton and the South bridges. With this in mind, a conclusion was made about the insufficiency and obsolescence of the existing protection zoning in the areas adjacent to the monument in question, and a new concept of protection zoning with additional development control zones was defined. Their approval will allow actualizing the territorial-environmental approach as the most effective in preserving the traditional Kyiv character of the environment for the present and future generations.


2018 ◽  
Vol 7 (9) ◽  
pp. 360 ◽  
Author(s):  
Hari Dhonju ◽  
Wen Xiao ◽  
Jon Mills ◽  
Vasilis Sarhosis

Despite being of paramount importance to humanity, tangible cultural heritage is often at risk from natural and anthropogenic threats worldwide. As a result, heritage discovery and conservation remain a huge challenge for both developed and developing countries, with heritage sites often inadequately cared for, be it due to a lack of resources, nonrecognition of the value by local people or authorities, human conflict, or some other reason. This paper presents an online geo-crowdsourcing system, termed Share Our Cultural Heritage (SOCH), which can be utilized for large-scale heritage documentation and sharing. Supported by web and mobile GIS, cultural heritage data such as textual stories, locations, and images can be acquired via portable devices. These data are georeferenced and presented to the public via web-mapping. Using photogrammetric modelling, acquired images are used to reconstruct heritage structures or artefacts into 3D digital models, which are then visualized on the SOCH web interface to enable public interaction. This end-to-end system incubates an online virtual community to encourage public engagement, raise awareness, and stimulate cultural heritage ownership. It also provides valuable resources for cultural heritage exploitation, management, education, and monitoring over time.


Author(s):  
Dominique Meyer ◽  
Elioth Fraijo ◽  
Eric Lo ◽  
Dominique Rissolo ◽  
Falko Kuester

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