Image encoding method

G - Physics – 09 – G

Patent

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Details

G09G 5/40 (2006.01) H03M 7/30 (2006.01) H03M 7/46 (2006.01)

Patent

CA 2402344

The invention concerns a method for encoding a digitised image comprising several pixel lines, which consists in encoding one line with a series of sub-codes characteristic of the length of the successive fields and their colour. The invention is characterised in that when the image comprises several identical successive lines, it consists in encoding the first of said lines and in completing with a sub-code characterising the repetition of the line and the number of times the line is repeated following said first line; when the image comprises several lines including the same succession of colours, it consists in encoding the first of said lines and in completing said code with a succession of sub-codes characterising the repetition of the succession of colours and the length of different fields of the different lines.

Procédé pour le codage d'une image numérisée comportant plusieurs lignes de pixels, selon lequel on code une ligne par une succession de sous-codes caractéristiques de la longueur des plages successives et de leur couleur, caractérisé en ce que lorsque l'image comporte plusieurs lignes successives identiques, on code la première de ces lignes et on complète ce code par un sous-code caractéristique de la répétition de la ligne et du nombre de fois où la ligne est répétée à la suite de cette première ligne, lorsque l'image comporte plusieurs lignes comportant la même succession de couleurs, on code la première de ces lignes et on complète ce code par une succession de sous- codes caractéristique de la répétition de la succession de couleurs et de la longueur des différentes plages des différentes lignes.

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