公开(公告)号：US20050114093A1

公开(公告)日：2005-05-26

申请号：US10986384

申请日：2004-11-12

申请人： Sang-chang Cha ,  Jong-hak Ahn

发明人： Sang-chang Cha ,  Jong-hak Ahn

IPC分类号： H04N7/32 ,  G06F11/30

CPC分类号： H04N19/57 ,  H04N19/109 ,  H04N19/139 ,  H04N19/176 ,  H04N19/53 ,  H04N19/61

摘要： Disclosed is a method and apparatus for a motion estimation using a variable block size of a hierarchy structure. The method includes: calculating each of a motion vector of a desired minimum unit variable block; determining a similarity of the calculated motion vectors between the minimum unit variable blocks in a higher hierarchy including the minimum unit variable block; establishing a mode of the variable block according to the determined similarity; and deciding a motion vector with respect to the mode established variable block. The complexity of the method of compressing a motion picture of a hierarchy structure having a plurality of block sizes can be reduced by selecting a mode of the optimal block size on the basis of a motion vector with respect to the minimum unit and the cost occurred at that time without performing the motion estimation with respect to each mode each time.

摘要翻译： 公开了一种使用层次结构的可变块大小的运动估计的方法和装置。 该方法包括：计算期望的最小单位可变块的运动矢量; 确定在包括所述最小单位可变块的较高层级中的所述最小单位可变块之间的所计算的运动矢量的相似度; 根据确定的相似度建立可变块的模式; 并且确定相对于模式建立的可变块的运动矢量。 可以通过基于相对于最小单位的运动矢量选择最佳块大小的模式来减少压缩具有多个块大小的层次结构的运动图像的方法的复杂度，并且在 该时间不对每次模式执行运动估计。