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<dc:title xml:lang="fr">Aide à la sélection de cibles pour des environnements de réalité virtuelle</dc:title>
<dcterms:alternative xml:lang="en">Assistance tools for target selection in virtual reality environments</dcterms:alternative>
<dc:subject xml:lang="fr">Réalité virtuelle</dc:subject>
<dc:subject xml:lang="fr">Sélection</dc:subject>
<dc:subject xml:lang="fr">Pointeur virtuel</dc:subject>
<dc:subject xml:lang="fr">Prédiction de cibles</dc:subject>
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<dc:subject xml:lang="en">Selection</dc:subject>
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<tef:elementdEntree autoriteExterne="029275725" autoriteSource="Sudoc">Systèmes d'aide à la décision</tef:elementdEntree>
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<dcterms:abstract xml:lang="fr">La sélection d'entités est une des tâches courantes et fondamentales de l'interaction. En environnement de réalité virtuelle, cette tâche s'effectue dans les trois dimensions, mais s'accompagne de difficultés inhérentes à ces environnements, comme une mauvaise perception de la profondeur. Des techniques existent pour pallier ces obstacles. Nous présentons trois nouvelles méthodes améliorant les performances de l'utilisateur durant les différentes étapes du processus de sélection. Le principe du Ring Concept permet de localiser des objets non visibles dans la scène. La technique Starfish guide le mouvement de l'utilisateur vers sa cible. Enfin, l'algorithme SPEED prédit le point d'arrivée d'un mouvement de sélection.</dcterms:abstract>
<dcterms:abstract xml:lang="en">Selection is one of the most current and fundamental interaction tasks. In a virtual reality environment, this task is performed in the three dimensions, but is accompanied by difficulties inherent in these environments, such as poor depth perception. Several techniques exist to overcome these obstacles. We present three new methods for improving the performance of the user during the various phases of the selection process. The Ring Concept principle can locate non-visible objects in the scene. The Starfish technique guides the movement of the user to the target. Finally, the SPEED algorithm predicts the endpoint of a selection movement.</dcterms:abstract>
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