Méthodes de rendu à base de vidéos et applications à la réalité Virtuelle. (Video-Based Rendering and Virtual Reality)

Given a set images of the same scene, the goal of video-based rendering methods is tocompute new views of this scene from new viewpoints.In this thesis,we focus on the Plane Sweep method. This method divides space in parallelplanes and each point of each plane is processed independently in order to know if it lies onthe surface of an object of the scene.Our main contribution concerns Plane Sweep adaptations that handle partial occlusions anddecrease the constraints on the position of the virtual camera. We also propose an adaptationof the Plane Sweep to stereoscopic rendering with low additional computation time. Finally,we propose a method that removes pseudoscopic movements in a virtual reality application.All these methods reach real-time rendering using shader programs. DISCIPLINE : Informatique MOTS CLES : Rendu à base de vidéos, reconstruction, vision par ordinateur, temps réel. INTITULE ET ADRESSE DE L’U.F.R.OU DU LABORATOIRE :UFR arts et technologies,Equipe SISAR,6 cours du Danube,77 700, Serris, France.tel-00733470,version1-18Sep2012