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Sarmizegetusa Regia was included, together with the other five Dacian fortresses, on the List of UNESCO World Heritage Sites in 1999. They are a unique synthesis of external cultural influences and local traditions in terms of building techniques and overall, in the ancient military architecture, representing the grand expression of the civilisation of the Dacian Kingdom. These fortresses are the accurate expression of the exceptional development level of the Dacian civilisation, Sarmizegetusa Regia lying at the forefront of this fortified complex, epitomizing the evolution phenomenon from fortified centres to proto-urban agglomerations. As such, promoting these monuments and the numerous artefacts discovered by modern methods and techniques should become a priority. This paper presents a series of last generation applications and equipment that may be successfully used in promoting cultural heritage. Case studies include scanned artefacts and 3D reconstructions of the monuments in the site of Sarmizegetusa Regia, a monument on the UNESCO List of World Heritage Sites together with the other five Dacian fortresses (Bănița, Costești-Blidaru, Costești-Cetățuie, Piatra Roșie and Căpâlna). We present here the results obtained following the use of several hardware tracking systems, augmented virtual reality applications and haptic devices. One of the important aspects, when attempting to make enhanced on-line use of heritage good is the extent to which it is accessible and reusable by various categories of users, either specialists or the general public. Digitalizing a good in the cultural heritage is the first step for ensuring the broad access via the on-line medium, the quality of this process ensuring the electronic format artefact legitimacy and credibility, which means that it should be an electronic duplicate truthful to the real artefact.

This paper is situated at the intersection of using Virtual Reality as a tool for cultural heritage preservation and using gesture interaction-based technology in order to achieve touchless, distant interaction of users with reconstructed artifacts. Various studies emphasize the positive effect on the cultural experience brought on by the use of Virtual Reality in a museum context. We build our approach on this idea, by modeling and reconstructing museum exhibits, both small artifacts and large architectural edifices. We propose and design navigation and interaction scenarios, at the same time taking into account present day limitations regarding social interaction, imposed during the COVID-19 pandemic. By considering the user in the center of the experience and focusing on enabling him/her to adjust the perspective on the visualized artifacts and to freely interact with them through natural gestures, we allow the user to immerse in the virtual environment and interact with the reconstructed artifacts by means of simple hand gestures, with no touch. Finally, we assess the usability and utility of the Virtual Reality system in a questionnaire-based study with 137 participants over a period of 6 months, whose results we discuss in the paper.

Three dimensional digitization of cultural heritage resources gains a lot of attention from the European Union and the United Nations, which is clearly revealed in current strategic goals and financing perspectives. Existing methodological approaches to 3D scanning in a prevailing number of cases assume that the procedure of scanning is performed in places that are closed to tourists, at least for the time of scanning. However, closing an exhibition for tourists or moving an artifact to be scanned is not always possible. Thanks to the long-term experience of the authors with 3D scanning of cultural heritage, the special procedure was designed for small and medium size objects to overcome difficulties expected in such cases. The procedure has been successfully implemented during 3D scanning of objects exhibited in the Silk Road region (on the territory of modern Uzbekistan), as well as objects being parts of wooden sacral architecture of the Maramures region (in Romania). It was revealed that the proposed procedure was successfully allowed to counteract organizational problems during 3D scanning of heritage objects being under continuous display, and that the achieved results of scanning were nevertheless of good quality.