| 摘要 |
A motion estimation method and an apparatus therefor are provided to predict the optimum value of a motion vector for pixels of a current block in a current picture in a process for performing motion estimation. The first scanning and searching unit scans a sub-set of specific macro blocks in a predetermined search region, and searches the optimum motion vector for all the scanned macro blocks(10,20). The second scanning and searching unit scans macro blocks in which N neighboring macro blocks previously encoded exist in a diagonal position among macro blocks which are not scanned in the search region, and searches the motion vector(30,40,50). The third scanning and searching unit scans macro blocks in which N neighboring macro blocks previously encoded exist in a horizontal-vertical position among the macro blocks which are not scanned in the search region, and searches the motion vector(60,70). The fourth scanning and searching unit scans all residual macro blocks among the macro blocks in the search region, and searches the motion vector(80,90).
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