Patent ID: 8179961
Filing Date: 2012-05-15
Classification: H04N

Abstract:
1. A method for adapting a default encoding of a digital video signal during a scene change period, which period includes at least one picture prior to the first picture of the new scene and at least one picture following said first picture of the new scene, wherein these pictures or macro pixel blocks or pixel blocks of these pictures are encoded in a predicted or in a non-predicted mode and wherein to quantized coefficients a number of bits are assigned for the further encoding processing, said method comprising: determining a scene cut and the corresponding scene change period; in each picture belonging to said scene change period, determining areas having at least two different human attention levels; assigning in pictures located prior to and at and after said scene cut to the areas having an attention level corresponding to lower attention less bits than in said default encoding, and assigning in the pictures located at and after said scene cut available bits saved in this way additionally to the areas having an attention level corresponding to higher attention, wherein said assigning of less bits to lower the attention areas is increased picture by picture until said first picture of the new scene, and is decreased picture by picture in the pictures following said first picture of the new scene, and wherein said assigning of more bits to the higher attention areas is decreased picture by picture starting from said first picture of the new scene.