Spatially enhanced transform coding

Details Spatially enhanced transform coding Spatially enhanced transform coding

Category

H - Electricity

Subcategory

04

Subsubcategory

N

IPC codes

H04N 7/50 (2006.01)

Type

Patent

Patent number

CA 2684110

Description

A system and method for improving prediction error coding performance of various video compression algorithms. Various embodiments combine the energy compaction features of transform coding with localization properties of spatial coding. In various embodiments, the effects of pixel "outliers" are removed from the transform and are coded separately as a spatially coded pixel prediction, thereby improving the coding gain of the transform.

L'invention concerne un système et un procédé permettant d'améliorer la performance du codage d'erreur de prédiction de divers algorithmes de compression vidéo. Divers modes de réalisation combinent les caractéristiques de compression d'énergie du codage par transformation aux propriétés de localisation du codage spatial. Dans divers modes de réalisation, les effets des pixels <= aberrants >= sont éliminés de la transformation et sont codés séparément sous la forme d'une prédiction de pixel codée spatialement, ce qui améliore ainsi le gain de codage de la transformation.

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