Browsing by Author "Gouranton, Valérie"

Now showing 1 - 6 of 6
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    Authoring AR Interaction by AR
    (The Eurographics Association, 2019) Lécuyer, Flavien; Gouranton, Valérie; Reuzeau, Adrien; Gaugne, Ronan; Arnaldi, Bruno; Kakehi, Yasuaki and Hiyama, Atsushi
    The demand for augmented reality applications is rapidly growing. In many domains, we observe a new interest for this technology, stressing the need for more efficient ways of producing augmented content. Similarly to virtual reality, interactive objects in augmented reality are a powerful means to improve the experience. While it is now well democratized for virtual reality, interactivity is still finding its way into augmented reality. To open the way to this interactive augmented reality, we designed a new methodology for the management of the interactions in augmented reality, supported by an authoring tool for the use by designers and domain experts. This tool makes the production of interactive augmented content faster, while being scalable to the needs of each application. Usually in the creation of applications, a large amount of time is spent through discussions between the designer (or the domain expert), carrying the needs of the application, and the developer, holding the knowledge to create it. Thanks to our tool, we reduce this time by allowing the designer to create an interactive application, without having to write a single line of code.
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    Can You Find Your Way? Comparing Wayfinding Behaviour Between Reality and Virtual Reality
    (The Eurographics Association, 2023) Goupil, Vincent; Arnaldi, Bruno; Argelaguet, Ferran; Michaud, Anne-Solène; Gouranton, Valérie; Jean-Marie Normand; Maki Sugimoto; Veronica Sundstedt
    Signage is an essential element in finding one's way and avoiding getting lost in open and indoor environments. Yet, designing an effective signage system for a complex structure remains a challenge, as some buildings may need to communicate a lot of information in a minimum amount of space. Virtual reality (VR) provides a new way of studying human wayfinding behaviour, offering a flexible and cost-effective platform for assessing the efficiency of signage, especially during the design phase of a building. However, it is not yet clear whether wayfinding behaviour and signage interpretation differ between reality and virtual reality. We conducted a wayfinding experiment using signage with 20 participants who performed a series of tasks in virtual and real conditions. Participants were video-recorded in both conditions. In addition, oral feedback and post-experiment questionnaires were collected as supplementary data. The aim of this study was to investigate the wayfinding behaviour of a user using signs in an unfamiliar real and virtual environment. The results of the experiment showed a similarity in behaviour between both environments; regardless of the order of passage and the environment, participants required less time to complete the task during the second run by reducing their mistakes and learning from their first run.
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    Could you Relax in an Artistic Co-creative Virtual Reality Experience?
    (The Eurographics Association, 2022) Lomet, Julien; Gaugne, Ronan; Gouranton, Valérie; Hideaki Uchiyama; Jean-Marie Normand
    Our work contributes to the design and study of artistic collaborative virtual environments through the presentation of immersive and interactive digital artwork installation and the evaluation of the impact of the experience on visitor's emotional state. The experience is centered on a dance performance, involves collaborative spectators who are engaged to the experience through full-body movements, and is structured in three times, a time of relaxation and discovery of the universe, a time of co-creation and a time of co-active contemplation. The collaborative artwork ''Creative Harmony'', was designed within a multidisciplinary team of artists, researchers and computer scientists from different laboratories. The aesthetic of the artistic environment is inspired by the German Romantism painting from 19th century. In order to foster co-presence, each participant of the experience is associated to an avatar that aims to represent both its body and movements. The music is an original composition designed to develop a peaceful and meditative ambiance to the universe of ''Creative Harmony''. The evaluation of the impact on visitor's mood is based on "Brief Mood Introspection Scale" (BMIS), a standard tool widely used in psychological and medical context. We also present an assessment of the experience through the analysis of questionnaires filled by the visitors. We observed a positive increase in the Positive-Tired indicator and a decrease in the Negative-Relaxed indicator, demonstrating the relaxing capabilities of the immersive virtual environment.
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    Evaluation of a Mixed Reality based Method for Archaeological Excavation Support
    (The Eurographics Association, 2019) Gaugne, Ronan; Petit, Quentin; Otsuki, Mai; Gouranton, Valérie; Nicolas, Théophane; Kakehi, Yasuaki and Hiyama, Atsushi
    In the context of archaeology, most of the time, micro-excavation for the study of furniture (metal, ceramics...) or archaeological context (incineration, bulk sampling) is performed without complete knowledge of the internal content, with the risk of damaging nested artefacts during the process. The use of medical imaging coupled with digital 3D technologies, has led to significant breakthroughs by allowing to refine the reading of complex artifacts. However, archaeologists may have difficulties in constructing a mental image in 3 dimensions from the axial and longitudinal sections obtained during medical imaging, and in the same way to visualize and manipulate a complex 3D object on screen, and an inability to simultaneously manipulate and analyze a 3D image, and a real object. Thereby, if digital technologies allow a 3D visualization (stereoscopic screen, VR headset ...), they are not without limiting the natural, intuitive and direct 3D perception of the archaeologist on the material or context being studied. We therefore propose a visualization system based on optical see-through augmented reality that associates real visualization of archaeological material with data from medical imaging. This represents a relevant approach for composite or corroded objects or contexts associating several objects such as cremations. The results presented in the paper identify adequate visualization modalities to allow archaeologist to estimate, with an acceptable error, the position of an internal element in a particular archaeological material, an Iron-Age cremation block inside a urn.
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    Immersive Volumetric Point Cloud Manipulation for Cultural Heritage
    (The Eurographics Association, 2021) Drissi, Rafik; Gaugne, Ronan; Nicolas, Théophane; Gouranton, Valérie; Orlosky, Jason and Reiners, Dirk and Weyers, Benjamin
    In this paper, we present a framework for an immersive and interactive 3D manipulation of volumetric point clouds in virtual reality. The framework was designed to meet the needs of cultural heritage experts such as archaeologists or curators for use on cultural heritage artifacts. We propose a display infrastructure associated with a set of tools that allows users from the cultural heritage domain to interact directly with the point clouds within their study process. The resulting framework allows an immersive navigation, interaction and real time segmentation.
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    Interactive and Immersive Tools for Point Clouds in Archaeology
    (The Eurographics Association, 2019) Gaugne, Ronan; Petit, Quentin; BARREAU, Jean-Baptiste; Gouranton, Valérie; Kakehi, Yasuaki and Hiyama, Atsushi
    In this article, we present a framework for an immersive and interactive 3D manipulation of large point clouds, in the context of an archaeological study. The framework was designed in an interdisciplinary collaboration with archaeologists.We first applied this framework for the study of an 17th-century building of a Real Tennis court. We propose a display infrastructure associated with a set of tools that allows archaeologists to interact directly with the point cloud within their study process. The resulting framework allows an immersive navigation at scale 1:1 in a dense point cloud, the manipulation and production of cut plans and cross sections, and the positioning and visualisation of photographic views. We also apply the same framework to three other archaeological contexts with different purposes, a 13th century ruined chapel, a 19th-century wreck and a cremation urn from the Iron Age.