Method and device for encoding video data in a scalable manner using a hierarchical motion estimator

摘要

The invention concerns a device for encoding video data in a scalable manner comprising- a scalable video encoder for encoding said video data according to n different layers and- a motion estimator,;According to the invention, a sub-resolution set of images to be encoded is computed by the scalable video encoder or by the motion estimator,said motion estimator uses motion computed at a lower resolution for computing the motion of the current resolution layer, and provides motion vectors associated with each resolution layer to the scalable video encoder for encoding the corresponding layer.