MOTION ESTIMATION

摘要

In a method of estimating motion vectors from sub-sampled video data (I), first vectors are estimated (ME, PM2) between an image with a first sub-sampling phase and an earlier image sub-sampled with a second sub-sampling phase, second vectors are estimated (ME, PM1) between an image with a second sub-sampling phase and an earlier image sub-sampled with a first sub-sampling phase, and the first and second vectors are combined (CD) to obtain output motion vectors (MV).