/ Method for predicting motion vectors in a video codec that allows multiple referencing motion vector encoding/decoding apparatus using the same

摘要

The present invention relates to a technique for selecting an initial value at the time of motion estimation using a predictive motion vector and reducing the amount of coding of the motion vector using the predictive motion vector in a video codec that allows multiple references. The motion vector encoding apparatus, for each of a plurality of reference frames, generates a motion vector for the current block and generates a predictive motion vector for the current block from the generated motion vectors. A motion estimator for determining a final motion vector for the current block and a final reference frame corresponding to the last motion vector, for a search region of the plurality of reference frames, and a final motion vector for the current block; And a differencer for obtaining a difference between the final predicted motion vectors corresponding to the determined final reference frame among the predicted motion vectors, and information about the final reference frame and means for encoding the difference.