Animated Image Compression in CATSERVER - Preliminary Description
نویسنده
چکیده
A scalable moving image compression system is proposed for the CAT-SERVER application, MPEG-like in its Group Of Frames structure for pre-dictive coding but using supplementary information retained from previous images to help image prediction and a novel movement detection / coding scheme based on spanning points with associated motion vectors. Résumé : Cet article décrit le système de compression d'images animées proposé pour CATSERVER. Il réalise un compromis qualité d'image-taux de compression réglable utilisant des frames prédictives comme en MPEG, mais se sert d'informa-tions supplémentaires gardées des images précédentes pour améliorer le taux de compression et utilise une nouvelle méthode pour détecter et coder le mouvement, basée sur un ensemble de pairs point de l'image-vecteur de mouvement.
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