公开(公告)号：EP0804034A3

公开(公告)日：1998-05-20

申请号：EP96306812

申请日：1996-09-19

申请人： FUJITSU LTD

发明人： WATANABE HIDEAKI ,  ITOH TAKASHI

IPC分类号： H04N19/50 ,  G06T9/00 ,  H04N19/105 ,  H04N19/114 ,  H04N19/139 ,  H04N19/142 ,  H04N19/172 ,  H04N19/189 ,  H04N19/196 ,  H04N19/423 ,  H04N19/503 ,  H04N19/51 ,  H04N19/56 ,  H04N19/57 ,  H04N19/577 ,  H04N19/61 ,  H04N19/625 ,  H04N19/87 ,  H04N19/91 ,  H04N7/26

CPC分类号： H04N19/577 ,  H04N19/51 ,  H04N19/58

摘要： A method of detecting motion vectors within a predetermined search range for motion-compensation predictive coding is disclosed. The method includes the steps of searching for first motion vectors between two frames which are separated from each other in a time dimension by a first frame distance, selecting a second frame distance of two frames between which picture motion is represented by second motion vectors, making a check whether the predetermined search range covers a predetermined percentage of the second motion vectors, the check using the first motion vectors as estimates of the second motion vectors after compensation for a difference between the first frame distance and the second frame distance, and deciding, based on results of the check, whether to increase a frame distance for prediction.

摘要翻译： 公开了一种在运动补偿预测编码的预定搜索范围内检测运动矢量的方法。 该方法包括以下步骤：搜索在时间维度上彼此分开第一帧距离的两个帧之间的第一运动矢量，选择由第二运动矢量表示图像运动的两帧之间的第二帧距离， 检查所述预定搜索范围是否覆盖所述第二运动矢量的预定百分比，使用所述第一运动矢量作为对所述第一帧距离和所述第二帧距离之间的差进行补偿后的所述第二运动矢量的估计值的检查， 基于检查结果，是否增加帧距离进行预测。