G - Physics – 06 – T
Patent
G - Physics
06
T
G06T 9/00 (2006.01) H04N 7/26 (2006.01)
Patent
CA 2453283
The invention relates to a method of coding an object having at least two dimensions which is associated with a basic mesh comprising a set of basic surfaces and with coefficients in a base of wavelets corresponding to local modifications to said basic mesh.The inventive method delivers a global data flow that can be used to reconstruct the object. According to the invention, said wavelet coefficients are partitioned into at least two disjoint subsets each of which is encoded independently. Subsequently, positional data are inserted by the method into the global data flow which can be used to locate wavelet coefficients relative to a portion of the object in said global data flow, in such a way as to enable a selective reconstruction of said portion using the coefficients of at least one of said subsets.
La demande concerne un procédé de codage d'un objet à au moins deux dimensions associé à un maillage de base constitué d'un ensemble de facettes de base, et à des coefficients dans une base d'ondelettes correspondant à des modifications locales dudit maillage de base, ledit procédé délivrant un flux de données global permettant de reconstruire ledit objet. Selon l'invention, lesdits coefficients d'ondelettes sont partitionnés en au moins deux sous-ensembles disjoints subissant chacun un codage indépendant, et ledit procédé insère, dans ledit flux de données global, des données de localisation permettant de repérer des coefficients d'ondelettes relatifs à une portion dudit objet dans ledit flux de données global, de façon à permettre une reconstruction sélective de ladite portion à l'aide des coefficients d'au moins un destits sous-ensembles.
France Telecom
Oyen Wiggs Green & Mutala Llp
LandOfFree
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