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The wooden churches from Transylvania, Romania, are a unique and representative cultural heritage asset for rural communities, both in terms of architecture and the style of painting that defines them as monuments of national heritage. These churches are in danger of degradation because rural communities are beginning to abandon them for various motives (e.g., they are too small, are expensive to maintain, or are being replaced by modern churches, built of stone and modern materials). The reason behind their accelerated degradation is that they are covered with shingles that need to be periodically changed and repaired to prevent water from reaching the inner painting layer, a process that is, in many cases, ignored. Imperial gates are the symbol of these churches and separate the nave from the narthex. They are made entirely out of wood and were sculpted and painted manually by skilled craftsmen and still represent the central element of these churches, in terms of art and aesthetics. The digital preservation of these heritage assets is an interdisciplinary undertaking, which begins with the physico-chemical analysis of the pigments in the painting layer, continues with three-dimensional (3D) digitization of the monument and of the objects of interest (such as the imperial gates), and finishes with a digital restoration of these monuments and artefacts. This paper presents a working methodology, successfully applied in digitizing and digitally restoring imperial gates from wooden churches in Transylvania, namely from the wooden church of Voivodeni, Sălaj County, Romania (Transylvania region). X-ray fluorescence and FTIR spectroscopy were used to determine the pigments in the painting layer of these artefacts, and after they were identified, they were synthesized in laboratory conditions. The resulting color was digitized and used for digitally restoring the artefact(s) to its (their) pristine condition. To popularize these cultural heritage assets, the authors make use of virtual reality to mediate the interaction between the general public and heritage objects in their current state of preservation, in a digital environment. Moreover, to showcase how these heritage objects were degraded over time, a digitally restored version of the artefact in pristine condition is presented alongside a version in its current state (as is, digitized, but not yet digitally restored). Full article

One of the most beautiful elements of cultural heritage in Romanian villages is the Transylvanian wooden churches. Unfortunately, these heritage elements have experienced considerable deterioration. This paper presents the results of a project whose main goal was the scientific investigation of the Imperial Gates belonging to the wooden church in Sălișca, Cluj County, Romania. To digitally preserve and document the Imperial Gates, a scientific investigation into the wooden support and the painting materials (ground, pigments) were performed using Fourier transform infrared (FTIR) and x-ray fluorescence (XRF) spectroscopy. FTIR spectroscopy provided information about the wooden support, whereas XRF and FTIR methods were used to structurally characterize the painting materials. These structural data were correlated with the artistic, theological, and historical analysis of the religious heritage monument. Starting from the information acquired about the wooden support and the painting materials, the Imperial Gates were three-dimensional (3D) scanned using state-of-the-art laser scanners. The digitization of the Imperial Gates and the interior of the church was performed to maintain the current preservation status and disseminate this information to the public using online instruments. Full article