公开(公告)号：US09167266B2

公开(公告)日：2015-10-20

申请号：US12309159

申请日：2007-07-02

申请人： Edouard Francois ,  Vincent Bottreau ,  Jéróme Vieron ,  Christophe Chevance

发明人： Edouard Francois ,  Vincent Bottreau ,  Jéróme Vieron ,  Christophe Chevance

IPC分类号： H04N7/26 ,  H04N19/59 ,  H04N19/112 ,  H04N19/16 ,  H04N19/33 ,  H04N19/517

CPC分类号： H04N19/59 ,  H04N19/112 ,  H04N19/16 ,  H04N19/33 ,  H04N19/517

摘要： The invention relates to a method for deriving motion data for a macroblock divided in elementary blocks of a high resolution picture, called high layer macroblock, from motion data of macroblocks of a low resolution picture, called base layer macroblock. The method comprises the following steps: computing, for each elementary block, an intermediate position within the low resolution picture from the elementary block position depending on the coding modes of the high layer macroblock and of the high and low resolution pictures; identifying the base layer macroblock, called base_MB, comprising the pixel located at the intermediate position; computing a final position within the low resolution picture from the virtual base layer position depending on the coding modes of the base_MB, of the high layer macroblock; identifying the base layer macroblock, called real_base_MB, comprising the pixel located at the final position; and deriving motion data, for the high layer macroblock, from motion data of the identified real_base_MB.