Etude et mise au point d'algorithmes rapides de quantification vectorielle : application au codage d'images

Abstract : Fast search algorithms for image coding vector quantization are proposed. The presented algorithms exploit the intercorrelation between neighbouring image blocks as well as the geometrical properties of the used distance to eliminate the necessity of performing many distorsion calculations so that partial distances need to be computed for only a few remaining candidate codevectors. The proposed algorithms can therefore achieve a fast dynamic search by progressive approximation to the nearest prototype and speed up the clustering classification LBG algorithm. The implementation of the proposed fast search algorithms on multitransputer systems
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Alain Nyeck. Etude et mise au point d'algorithmes rapides de quantification vectorielle : application au codage d'images. Autre. Université Paul Verlaine - Metz, 1992. Français. ⟨NNT : 1992METZ008S⟩. ⟨tel-01775966⟩

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