Method and device for estimating motion vectors for frame interpolation

摘要

A multi-pass and multi-resolution method of estimating motion vectors is to be used for motion compensated frame interpolation. The method performs a predictive search to assign motion vectors to blocks of pixels for interpolating a video frame. The interpolated frame may be located between adjacent frames in a sequence or may be an individual reconstituted or synthesized frame. Outlier motion vectors amongst the assigned motion vectors are detected and corrected. The performing of the predictive search, detection and correction steps are repeated in second and subsequent passes to prevent error accumulation in the assigned motion vectors. During subsequent passes, the effective size of the blocks is progressively decreased.