Effecting video transitions between video streams

Details Effecting video transitions between video streams Effecting video transitions between video streams

H - Electricity

04

N

H04N 9/74 (2006.01) H04N 5/265 (2006.01)

Patent

CA 2385519

Combining first (72) and second (74) video streams into a combined output video stream (78) by using a gradient table (90) listing gradient values for pixels in a video frame to address a look up table (62) of key values, and combining pixel values of the first and second video streams based upon respective key values read from the look up table (62).

Combinaison d'une première (72) et d'une deuxième (74) chaînes vidéo en chaîne vidéo de sortie combinée (78) au moyen d'une table de gradients (90) contenant la liste de valeurs de gradients pour des pixels dans une trame vidéo afin d'effectuer l'adressage d'une table de consultation (62) de valeurs clé, et combinaison des valeurs de pixel de la première et de la deuxième chaînes vidéo en fonction des valeurs clé respectives relevées dans la table de consultation (62).

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