UNIT FOR AND METHOD OF ESTIMATING A CURRENT MOTION VECTOR

摘要

The motion estimation unit (100) being arranged to estimate a current motion vector for a first group (212) of pixels, comprises: a generating unit (106) for generating a set of candidate motion vectors for the first group (212) of pixels, with the candidate motion vectors being extracted from a set of previously estimated motion vectors; a match error unit (102) for calculating match errors of respective candidate motion vectors; and a selection unit (104) for selecting the current motion vector from the candidate motion vectors. The motion estimation unit (100) is arranged to modulate a predetermined match error threshold on basis of a result of segmentation for the first image. If the match error of a first one of the candidate motion vectors is below the current predetermined match error threshold then the first one of the candidate motion vectors is selected and evaluation of further candidate motion vectors for the first group of pixels is skipped.