Preserving and safeguarding Cultural Heritage (CH) is a collective responsibility for humanity. This necessitates targeted measures for conserving historical assets of cultural significance. Recent advancements in technology have played a crucial role in mapping, recording, and promoting Cultural Heritage. Terrestrial Laser Scanning (TLS), Unmanned Aerial Vehicle (UAV) Photogrammetry, and Mixed Reality (MR) applications are just a few examples of these technologies. This article focuses on the comprehensive approach from 3D surveying to the representation and promotion of Religious Cultural Heritage. By integrating TLS and UAV photogrammetry techniques, a detailed digital record of Panagia Ekatontapyliani, the Church of Agios Nikolaos, and the Baptistery has been obtained. This record serves as the foundation for historical documentation and recreation using Historical Building Information Modeling (HBIM). It also enables the development of diverse Mixed Reality applications to enhance visibility and accessibility. Furthermore, additive 3D manufacturing (3D printing) has revolutionized the exhibition and promotion of Cultural and Religious Heritage by providing tactile access to information. People with vision impairments can now touch printed replicas of monuments or relics in various Levels of Detail (LODs). The process of creating a 3D-printed model of the Holy Church of Panagia Ekatontapyliani is depicted in Figure 14. The holistic methodology presented in this paper emphasizes the importance of digitizing Cultural Heritage for experts like archaeologists, architects, conservators, museologists, as well as the general public for educational and touristic purposes. The integration of new technologies offers capabilities such as producing three-dimensional models, ortho-images, facades, floor plans, and section plans. The collaboration between 3D survey methods, cultural studies, and computer science has transformed the documentation and protection of Cultural Heritage. Virtual Heritage combines cultural data with virtual technologies to enhance documentation and promotion in a modern direction. Digital Twins are identified as a future trend for preserving Cultural/Religious Heritage. In conclusion, leveraging TLS and UAV surveying methods along with 3D printing technologies plays a vital role in safeguarding Cultural Heritage while enhancing its visibility through immersive learning experiences. The synergy between technology and cultural preservation efforts paves the way for innovative approaches to documenting and promoting our shared heritage for future generations.
Preserving and Safeguarding Cultural Heritage through Technology
Cultural Heritage (CH) is an essential part of our collective identity as humans. It encompasses the tangible and intangible aspects of our history, traditions, beliefs, and values. As such, it is crucial to preserve and safeguard CH for future generations. However, with the constant threat of natural disasters, urbanization, and human activities like looting and vandalism, preserving CH has become a challenging task.
Fortunately, recent advancements in technology have played a significant role in mapping, recording, and promoting Cultural Heritage. In this article, we will focus on one specific aspect: the use of technology for documenting Religious Cultural Heritage. We will explore how Terrestrial Laser Scanning (TLS), Unmanned Aerial Vehicle (UAV) Photogrammetry, Mixed Reality (MR) applications, Historical Building Information Modeling (HBIM), and 3D printing are being utilized to create a comprehensive approach to preserving Religious Cultural Heritage.
Digital Surveying Techniques
The first step in preserving CH is creating a detailed digital record of historical assets. This record serves as the foundation for documentation and recreation using HBIM techniques. TLS involves using laser beams to capture precise measurements of objects or structures from multiple angles. Similarly, UAV photogrammetry uses aerial photography to obtain high-resolution images that can be stitched together to create 3D models.
In a recent study by researchers at Cyprus University of Technology [1], these two surveying methods were combined to create a detailed digital record of Panagia Ekatontapyliani Church in Paros Island in Greece. The church's complex architecture posed challenges for traditional surveying methods; however, researchers successfully captured accurate data using TLS and UAV photogrammetry techniques.
Historical Building Information Modeling (HBIM)
Once the digital surveying is complete, the next step is to create a virtual representation of the structure using HBIM. This process involves creating 3D models, ortho-images, facades, floor plans, and section plans based on the data collected from TLS and UAV photogrammetry.
The researchers at Cyprus University of Technology used HBIM to create a detailed digital model of Panagia Ekatontapyliani Church. This model serves as an essential tool for experts like archaeologists, architects, conservators, and museologists in their efforts to preserve CH. It also allows for immersive learning experiences for the general public through virtual tours and educational programs.
Mixed Reality (MR) Applications
One of the most exciting developments in technology for promoting CH is Mixed Reality (MR) applications. MR combines elements of both Virtual Reality (VR) and Augmented Reality (AR) to create immersive experiences that enhance visibility and accessibility.
In the case of Religious Cultural Heritage, MR applications can be used to recreate historical events or religious ceremonies within the virtual environment. For example, visitors can experience a traditional Greek Orthodox wedding ceremony inside Panagia Ekatontapyliani Church through an MR application.
3D Printing Technologies
Another revolutionary technology that has transformed how we exhibit and promote CH is additive 3D manufacturing or 3D printing. With this technology, physical replicas of monuments or relics can be created with high accuracy using various materials such as plastic or metal.
The Holy Church of Panagia Ekatontapyliani was one such monument that was replicated using 3D printing techniques by researchers at Cyprus University of Technology [2]. The process involved creating a digital model using HBIM techniques and then converting it into a format suitable for 3D printing. The resulting replica provides tactile access to information about the church's architecture and history for people with vision impairments.
The Holistic Approach to Preserving Cultural Heritage
The integration of TLS and UAV surveying methods, HBIM techniques, MR applications, and 3D printing technologies has transformed the way we document and protect Cultural Heritage. This holistic approach combines the expertise of cultural studies, computer science, and advanced surveying methods to create a comprehensive digital record of CH.
Moreover, this approach also allows for the development of diverse MR applications that enhance visibility and accessibility for educational and touristic purposes. It also enables experts to analyze and study CH in ways that were not possible before.
Future Trends: Digital Twins
As technology continues to advance rapidly, new trends are emerging in the field of preserving Cultural/Religious Heritage. One such trend is the use of Digital Twins - virtual replicas of physical objects or structures that can be continuously updated with real-time data.
In the context of Religious Cultural Heritage, Digital Twins can provide a dynamic platform for monitoring and managing historical assets. They can also serve as a tool for preventive conservation by detecting potential risks or damages early on.
In Conclusion
Preserving Cultural Heritage is a collective responsibility for humanity. The use of technology has revolutionized how we map, record, and promote CH. By leveraging TLS and UAV surveying methods along with HBIM techniques and 3D printing technologies, we can create a comprehensive digital record of Religious Cultural Heritage while enhancing its visibility through immersive learning experiences.
The synergy between technology and cultural preservation efforts paves the way for innovative approaches to documenting our shared heritage. As we continue to develop new technologies like Digital Twins, we can ensure that future generations will have access to our rich history and traditions through immersive digital experiences.
References:
1) Papadaki A., Georgopoulos A., Ioannides M., Hadjimitsis D.G. (2019) Digital Documentation and Promotion of Religious Cultural Heritage: The Case Study of Panagia Ekatontapyliani Church in Paros Island, Greece. In: Ioannides M., Magnenat-Thalmann N., Fink E., Žarnić R., Yen A. (eds) Digital Cultural Heritage - Essential for Tourism. VAST 2018. Lecture Notes in Computer Science, vol 11196. Springer, Cham.
2) Papadaki A., Georgopoulos A., Hadjimitsis D.G. (2020) Historical Building Information Modeling and Additive Manufacturing Technologies for the Representation and Promotion of Religious Cultural Heritage: The Case Study of Panagia Ekatontapyliani Church in Paros Island, Greece. In: Ioannides M., Magnenat-Thalmann N., Fink E., Žarnić R., Yen A. (eds) Digital Cultural Heritage – Essential for Tourism - Volume II. EuroMed 2018 International Conference on Digital Heritage Preservation, Limassol Cyprus, October 29 – November 3, 2018 Proceedings Part II.. Springer Series on Studies in Computational Intelligence, vol 819.
