Device and method for motion estimation and compensation

摘要

A device for motion estimation in video image data is provided. The device comprises a motion estimation unit (11, 21) for estimating a current motion vector for an area of a current image by determining a set of temporal and/or spatial candidate motion vectors and selecting a best motion vector from the set of candidate motion vectors. The motion estimation unit (11, 21) is further adapted for substantially doubling one or more of the candidate motion vectors and for including the one or more substantially doubled candidate motion vectors in the set of candidate motion vectors.

主权项

1. A motion estimation unit for estimating a current motion vector for an area of a current video image, comprising:
module determining a set of candidate motion vectors; a temporal distance detection unit which determines whether the temporal distance between a current image and a previous image has doubled due to a missing input image; module doubling at least one candidate motion vector in the set of candidate motion vectors if the temporal distance detection unit determines that the temporal distance between a current image and a previous image has doubled; module including the at least one doubled candidate motion vector in an updated set of candidate motion vectors if the temporal distance detection unit determines that the temporal distance between a current image and a previous image has been doubled; module estimating the current motion vector from the updated set of candidate motion vectors by calculating a match error only once for each candidate motion vector and comparing the calculated match errors; and module halving the candidate motion vectors and including halved candidate motion vectors in the updated set of candidate motion vectors.