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The city centre of Khiva (Uzbekistan), called Itchan Kala, is an architectural complex included in the UNESCO list of tangible cultural heritage. One of the historic buildings in it is the Juma Mosque. It has a simple rectangular structure, but is very large and has 213 deeply carved wooden columns supporting the roof. The article presents the process, problems, and their solutions resulting from the implementation of 3D laser scanning of such highly detailed and geometrically complex historical architectural objects in the conditions of normal tourist traffic. The optimisation of scanning positions, scanning in situ implementation, as well as the processing of the acquired data and the construction of a 3D mesh model of the mosque interior are presented. It is pointed out that scanning such objects with high accuracy and density of measurement points causes major technical problems related to the workload, and the huge volume of data acquired and processed. The possibilities of making the 3D model available in digital space for the purpose of researching the appearance and geometry of the mosque, its individual columns, as well as popularising the monument are also discussed. It is highly probable that the scanning of the Juma Mosque's interior presented here was carried out for the first time in history. [ABSTRACT FROM AUTHOR]

Conservation of cultural heritage is nowadays a very important aspect of our lives. Thanks to such legacy we gain knowledge about our ancestors, methods of production and ways of their life. The rapid development of 3D technology allows for more and more faithful reflection of this area of life. The rich cultural heritage, both tangible and intangible, can be preserved for future generations due to the use of advanced 3d technologies. They provide the means of documenting, recovering and presenting items of cultural heritage. Not only buildings or monuments are taken into account. An important aspect of our culture is intangible cultural heritage (ICH), including acting, crafting or storytelling, passed down from generation to generation. Due to the rapid development of civilisation and the migration of people, this type of culture is often forgotten. That is why the preservation of ICH is an important element of today world. The main aim of this study, on the basis of the gathered papers, is to identify: (1) the general state of use of 3D digital technologies in ICH; (2) the topics and themes discussed; (3) the technologies used in the study; (4) locations of research centres conducting such studies; and (5) the types of research carried out. The methodology consists of the following main steps: defining study questions, searching query development, selection of publications in Scopus, Web of Knowledge and IEEE Xplore, finally the study execution and the analysis of the obtained results. The results show that for ICH the most often used technologies are: 3D visualisation, 3D modelling, Augmented Reality, Virtual Reality and motion capture systems. [ABSTRACT FROM AUTHOR]