Assisted navigation for digital architectural walkthroughs in Natural User Interface‑based installations

Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature.[Abstract] The architectural experience of visiting a virtual building and exploring its contents requires tools to provide visitors with accessible and pleasurable ways to conduct their stroll and facilitate the contemplation and enjoyment of the contents displayed. Natural user interfaces (NUI) are effective and engaging tools for interacting with digital content. In this paper, the authors combine their previous work in the research lines of natural user interfaces and assisted navigation, putting them together on a UX test scenario and studying their combined effect. The testbed consisted of an installation controlled using a depth camera for NUI interaction and applying an attractor-based approach of assisted navigation. The UX experiment consisted of five stages, with three test sets of increasing complexity. The system monitored and recorded the users’ movements on each test during the experiment to extract quantitative data. After each task, users filled out specific questionnaires that provided qualitative information. The study also evaluates the influence of users’ previous expertise on 3D video games in their performance taking the test. The results indicate the benefits of combining both technologies and how they enhance the virtual visit experience. Furthermore, the combined use of natural interaction and assisted navigation facilitates universal access to installations of this kind, frequently found in museums and exhibits, independently of previous user expertise in interactive 3D environments, such as video games