| 摘要 |
The present invention relates to a method for motion estimation in multimedia images, which comprises steps of: dividing a predict image frame into a plurality of groups of macroblocks, and each of the groups of macroblocks including a plurality of macroblocks; predicting a motion vector of each of the groups of macroblocks, and producing a predict motion vector; producing one or more search windows according to the predict motion vector; and comparing a plurality of pixels in each macroblock of each group of macroblocks to a plurality of pixels in the search window, and producing an actual motion vector, respectively. Thereby, by gathering a plurality of macroblocks, a shared predict motion vector is produced for reducing computations in coding. Hence, the coding efficiency can be enhanced.
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