| 摘要 |
In an image encoding scheme (e.g., MPEG-2) in which two or more different sets of motion vectors are generated for each image that is to be encoded using motion estimation, one or more sets of motion vectors are generated by applying temporal scaling to one or more other sets of motion vectors that may be generated using conventional motion estimation techniques. Using such a temporal interpolation scheme to generate one or more of the sets of motion vectors for each image can greatly reduce the processing load on an image encoding system for motion estimation processing. Local motion estimation can optionally be performed on the estimates generated using temporal interpolation to select final motion vectors, e.g., for use in subsequent image compression processing that relies on motion compensation. |
