A method for modifying the content of a television image

H - Electricity – 04 – N

Patent

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Details

H04N 5/222 (2006.01)

Patent

CA 2709003

The method for modifying the content of a target area (11) in a television image (7) comprises generating an original image signal (PGM1) by means of a camera (1), processing the original image signal by adding graphics (9) into the television image, determining the target area in the television image, transmitting further the processed image signal (PGM2) and the target area determining data, and inserting, at a later stage (14) of the signal transmission chain, substitutive content (15a, 15b) to the target area according to the target area determining data. According to the present invention, the graphics (9) is added into the television image (7) according to a predetermined graphics percentage of coverage; and to the shared area (13) of the target area and the additional graphics area, the substitutive content (15a, 15b) is inserted according to the residual percentage of coverage not covered by the added graphics.

L'invention concerne un procédé de modification du contenu d'une zone cible (11) dans une image télévisée (7) comprenant la génération d'un signal d'image d'origine (PGM1) au moyen d'une caméra (1), le traitement du signal d'image d'origine par l'ajout de graphiques (9) dans l'image télévisée, la détermination de la zone cible dans l'image télévisée, la retransmission du signal d'image traité (PGM2) et des données de détermination de zone cible, et l'insertion, à un stade ultérieur (14) de la chaîne de transmission de signal, d'un contenu de substitution (15a, 15b) dans la zone cible selon les données de détermination de zone cible. Selon la présente invention, les graphiques (9) sont ajoutés dans l'image télévisée (7) selon un pourcentage de couverture de graphique prédéterminé; le contenu de substitution (15a, 15b) est inséré dans la zone partagée (13) de la zone cible et de la zone de graphique supplémentaire, selon le pourcentage de couverture résiduel non couvert par les graphiques ajoutés.

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