公开(公告)号：EP1138152B1

公开(公告)日：2006-12-20

申请号：EP98924990.9

申请日：1998-05-29

申请人： Mediatek Inc.

发明人： SONG, Xudong ,  ZHANG, Ya-Qin ,  CHIANG, Tihao

IPC分类号： H04N7/00 ,  H04N7/26 ,  G06T7/20

CPC分类号： H04N19/53 ,  H04N19/39 ,  H04N19/61

摘要： An apparatus and a concomitant method for encoding image sequences and, more particularly, to a method for reducing the computational complexity in determining motion vectors for block-based motion estimation (140) and for enhancing the accuracy of motion estimates through the use of non-linear pyramids (122) is disclosed.

公开(公告)号：EP1138152B8

公开(公告)日：2007-02-14

申请号：EP98924990.9

申请日：1998-05-29

申请人： MediaTek Inc.

发明人： SONG, Xudong ,  ZHANG, Ya-Qin ,  CHIANG, Tihao

IPC分类号： H04N7/00 ,  H04N7/26 ,  G06T7/20

CPC分类号： H04N19/53 ,  H04N19/39 ,  H04N19/61

摘要： An apparatus and a concomitant method for encoding image sequences and, more particularly, to a method for reducing the computational complexity in determining motion vectors for block-based motion estimation (140) and for enhancing the accuracy of motion estimates through the use of non-linear pyramids (122) is disclosed.

公开(公告)号：EP1078531B1

公开(公告)日：2006-01-11

申请号：EP99916382.7

申请日：1999-04-05

申请人： Mediatek Inc.

发明人： SETHURAMAN, Sriram ,  CHIANG, Tihao ,  SONG, Xudong ,  KRISHNAMURTHY, Ravi ,  HATRACK, Paul ,  ZHANG, Ya-Qin

IPC分类号： H04N7/50 ,  H04N7/26

CPC分类号： H04N19/53 ,  H04N19/107 ,  H04N19/114 ,  H04N19/115 ,  H04N19/13 ,  H04N19/14 ,  H04N19/146 ,  H04N19/147 ,  H04N19/152 ,  H04N19/172 ,  H04N19/176 ,  H04N19/177 ,  H04N19/182 ,  H04N19/186 ,  H04N19/42 ,  H04N19/61 ,  H04N19/91

摘要： A method and apparatus for encoding, illustratively, a video information stream to produce an encoded information stream according to a group of frames (GOF) information structure where the GOF structure and, optionally, a bit budget are modified in response to, respectively, information discontinuities and the presence of redundant information in the video information stream (due to, e.g., 3:2 pull-down processing).