Selecting transforms for compressing visual data

Details Selecting transforms for compressing visual data Selecting transforms for compressing visual data

H - Electricity

04

N

H04N 7/24 (2011.01)

Patent

CA 2761328

Encoding data includes: computing a first set of coefficients based on a plurality of transforms each computed over a different portion of an array of data, and a second set of coefficients based on a transform computed over the array of data; choosing a set of coefficients to represent the array of data from a group of multiple sets of coefficients, the group including the first set of coefficients and the second set of coefficients; and encoding the chosen coefficients and one or more parameters related to the chosen coefficients.

L'invention porte sur un codage de données comprenant : le calcul d'un premier ensemble de coefficients sur la base d'une pluralité de transformées chacune calculée sur une partie différente d'un réseau de données, et un second ensemble de coefficients basé sur une transformée calculée sur le réseau de données, le choix d'un ensemble de coefficients destinés à représenter le réseau de données à partir d'un groupe d'ensembles multiples de coefficients, le groupe comprenant le premier ensemble de coefficients et le second ensemble de coefficients, et le codage des coefficients choisis et d'un ou plusieurs paramètres liés aux coefficients choisis.

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