Point-cloud avatars to improve spatial communication in immersive collaborative virtual environments
| Autor: | Amine Chellali, Samia Cheikh, Guillaume Gamelin, Aylen Ricca, Samir Otmane, Cédric Dumas |
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| Přispěvatelé: | Informatique, BioInformatique, Systèmes Complexes (IBISC), Université d'Évry-Val-d'Essonne (UEVE)-Université Paris-Saclay, Laboratoire des Sciences du Numérique de Nantes (LS2N), IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-École Centrale de Nantes (ECN)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT) |
| Rok vydání: | 2020 |
| Předmět: |
Collaborative virtual environments
Computer science Partner’s avatar media_common.quotation_subject Mobile computing Fidelity 02 engineering and technology Kinematics Spatial communication Management Science and Operations Research Spatial memory Field (computer science) Task (project management) Human–computer interaction 020204 information systems 0202 electrical engineering electronic engineering information engineering [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC] Representation (mathematics) ComputingMethodologies_COMPUTERGRAPHICS media_common Avatar 020206 networking & telecommunications Kinematic fidelity Computer Science Applications Immersive virtual reality Hardware and Architecture |
| Zdroj: | Personal and Ubiquitous Computing Personal and Ubiquitous Computing, Springer Verlag, 2021, 25 (3), pp.467--484. ⟨10.1007/s00779-020-01431-1⟩ Personal and Ubiquitous Computing, 2021, 25 (3), pp.467--484. ⟨10.1007/s00779-020-01431-1⟩ |
| ISSN: | 1617-4917 1617-4909 |
| DOI: | 10.1007/s00779-020-01431-1 |
| Popis: | International audience; Collaborative virtual environments allow remote users to work together in a shared 3D space. To take advantage of the possibilities offered by such systems, their design must allow the users to interact and communicate efficiently. One open question in this field concerns the avatar fidelity of remote partners. This can impact communication between the remote users, more particularly when performing collaborative spatial tasks. In this paper, we present an experimental study comparing the effects of two partner’s avatars on collaboration during spatial tasks. The first avatar was based on a 2.5D streamed point-cloud and the second avatar was based on a 3D preconstructed avatar replicating the remote user movements. These avatars differ in their fidelity levels described through two components: visual and kinematic fidelity. The collaborative performance was evaluated through the efficacy of completing two spatial communication tasks, a pointing task and spatial guidance task. The results indicate that the streamed point-cloud avatar permitted a significant improvement of the collaborative performance for both tasks. The subjective evaluation suggests that these differences in performance can mainly be attributed to the higher kinematic fidelity of this representation as compared with the 3D preconstructed avatar representation. We conclude that, when designing spatial collaborative virtual environments, it is important to reach a high kinematic fidelity of the partner’s representation while a moderate visual fidelity of this representation can suffice. |
| Databáze: | OpenAIRE |
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