| 摘要 |
<p>The invention relates to a method of motion estimation for use in a video picture encoder. A first macroblock of a present picture is compared with a plurality of macroblocks within a search window of a previous or next picture for determining a second macroblock within the search window which is spatially displaced from the first macroblock by an amount represented by a motion vector at a full pixel resolution level. The comparison of the present picture and the previous or next picture is performed by the encoder using packed operations. The method includes the step of storing each pixel of the first macroblock or the search window using two bytes per pixel for avoiding byte misalignment during the packed operations.</p> |
