HYBRID FINE-GRAIN SCALED VIDEO-CODING WITH TIME-DEPENDENT SIGNAL-TO-NOISE RATIO

摘要

FIELD: video-coding; fine-grain coding method including quality and time scaling. ^ SUBSTANCE: use is made of hybrid time/signal-to-noise-ratio scaled structure found just useful for fine-grain coding method. Updated time frames in one example of this structure and updated frames of fine-grain scaling are included in single updated layer. In other example use is made of separate updated layers to attain hybrid time-dependent signal-to-noise ratio scaling. These two layers incorporate time scaled layer to attain time updating for basic layer (that is for better motion) while fine-grain scaling layer is used to improve quality of signal-to-noise basic layer and/or time-scaled updated layer. ^ EFFECT: improved video quality or signal-to-noise ratio of each frame or pattern transferred in basic layer. ^ 10 cl, 21 dwg