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Scalable and Efficient Video Coding Using 3-D Modeling

Authors: Balter, Raphaèle; Gioia, Patrick; Morin, Luce;

Scalable and Efficient Video Coding Using 3-D Modeling

Abstract

In this document we present a 3D model-based video coding scheme for streaming static scene video in a compact way but also enabling time and spatial scalability according to network or terminal capability and providing 3D functionalities. The proposed format is based on encoding the sequence of reconstructed models using second generation wavelets, and efficiently multiplexing the resulting geometric, topological, texture and camera motion binary representations. The wavelets decomposition can be adaptive in order to fit to images and scene contents. To ensure time scalability, this representation is based on a common connectivity for all 3D models, which also allows straightforward morphing between successive models ensuring visual continuity at no additional cost. The method proves to be better than previous methods for video encoding of static scenes, even better than state-of-the-art video coders such as H264 (also known as MPEG AVC). Another application of our approach is the fast transmission and real-time visualization of virtual environments obtained by video capture, for virtual or augmented reality, free walk-through in photo-realistic 3D environments, and numerous other image-base applications. / Nous présentons dans ce document un schéma de codage vidéo basé sur des modèles 3D qui permet de compresser efficacement des vidéos de scènes statiques tout en garantissant une scalabilité temporelle et spatiale afin de s'adapter aux capacités du réseau et des terminaux. Le passage par des modèles 3D permettent d'ajouter des fonctionnalités à la vidéo. Le format proposé se base sur l'encodage d'une séquence de modèles 3D extraits à partir de la vidéo en utilisant des ondelettes de seconde génération, et en multiplexant efficacement les représentations binaires résultaants pour la géométrie, la connectivité, la texture et les positions de caméra. La décomposition par ondelettes peut être aadptative afin de s'adapter au contenu des images et de la scène. Afin d'assurer la scalabilité temporelle, cette représentation et basée sur une connectivité commune pour tous les modèles qui permet de plus uu morphing implicite entre les modèles successifs assurant une continuité visuelle. La méthode a permis d'obtenir de meilleurs résultats pour le codage de vidéos de scènes statiques que le codeur vidéo référence de l'état de l'art H264 (également connu sous le nom de MPEG/AVC). Une autre application de notre approche est la transmission rapide et la visualisation temps réel d'environnements virtuels obtenus partir de vidéos pour les réalités augmentée et virtuelle, la navigation photoréalistique dans des environnements 3D et de nombreuses autres applications basées sur les images.

Keywords

Codage basé Modèles 3D, [INFO.INFO-CV] Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], Ondelettes de Seconde Génération Wavelets, Reconstruction 3D, [INFO.INFO-GR] Computer Science [cs]/Graphics [cs.GR], Second Generation Wavelets, 3D Model-based Coding, 3D Reconstruction

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    influence
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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
11
Top 10%
Top 10%
Average
Green
bronze