| 摘要 |
A motion vector determining method is provided to improve probability that a direct mode is selected as a prediction mode of a macro block, thereby improving bi-predictive picture coding efficiency. If a co-located block located in a reference picture has only a list 1 motion vector, a list 1 motion vector of a co-located block of a first list 1 reference picture is selected as a motion vector for inducing list 0 and list 1 motion vectors of a bi-predictive block. If the co-located block has list 1 and list 0 motion vectors, a list 0 motion vector of the co-located block is selected as a motion vector for inducing a motion vector of the bi-predictive block. At least one motion vector of the bi-predictive block is induced by applying bit operation to the selected motion vector. |
