| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a system for vector conversion related to chrominance motion vector rounding. <P>SOLUTION: In motion compensation in a video coding application and a video decoding application, motion vectors of a luminance space (luminance motion vectors) are converted to motion vectors of a chrominance space (chrominance motion vectors). For example, during motion compensation, a video encoder or decoder converts luminance motion vectors into chrominance motion vectors having quarter-pixel accuracy. Or, during motion compensation, the video encoder or decoder converts luminance motion vectors into chrominance motion vectors by using one of a plurality of available chrominance motion vector rounding modes. <P>COPYRIGHT: (C)2004,JPO |
