Vector-based image processing

G - Physics – 06 – T

Patent

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G06T 9/00 (2006.01)

Patent

CA 2683841

A block (300) of image elements (310) is compressed by determining multiple base vectors (510, 520, 530, 540) based on the feature vectors (312) associated with the image elements. Additional vectors (560, 570) are calculated based on defined pairs of neighboring base vectors (510, 520, 530, 540). A vector among the base vectors (510, 520, 530, 540) and the additional vectors (560, 570) is selected as representation of the feature vector (312) of an image element (310). An identifier (550) associated with selected vector is assigned to the image element (310) and included in the compressed block (500) which also comprises representations of the determined base vectors (510, 520, 530, 540).

Compression de bloc (300) d'éléments d'image par détermination de plusieurs vecteurs de base (510, 520, 530, 540) à partir des vecteurs de caractéristiques (312) associés aux éléments d'image. D'autres vecteurs (560, 570) sont calculés sur la base de paires définies de vecteurs de base voisins (510, 520, 530, 540). Un vecteur parmi eux (510, 520, 530, 540) et les autres vecteurs (560, 570) est choisi comme représentation du vecteur de caractéristiques (312) d'élément d'image (310). Un identificateur (550) associé au vecteur choisi est attribué à l'élément d'image (310) et inséré dans le bloc comprimé (500) qui comprend aussi des représentations des vecteurs de base déterminés (510, 520, 530, 540).

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