Apparatus and method for object based rate control in a...

Details Apparatus and method for object based rate control in a... Apparatus and method for object based rate control in a...

H - Electricity

04

N

H04N 7/24 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2295689

A method and apparatus for selecting a quantizer scale for each object within a frame to optimize the coding rate are disclosed. A quantizer scale is selected for each region or "object" within each frame such that the target bit rate for the frame is achieved while maintaining a uniform visual quality over the entire frame.

L'invention concerne un procédé et un appareil permettant de sélectionner un facteur de quantification pour chaque objet situé à l'intérieur d'un cadre de manière à optimiser la vitesse de codage. Un facteur de quantification est sélectionné pour chaque région ou "objet" se trouvant à l'intérieur de chacun des cadres de manière à obtenir le débit binaire cible correspondant au cadre tout en maintenant une qualité visuelle uniforme sur l'intégralité du cadre.

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