Method and apparatus for processing video signal

摘要

The present invention relates to a method and apparatus for processing a video signal, which can increase the accuracy of the motion vector prediction through motion vector scaling which takes a difference in the temporal distance between reference pictures into consideration. To this end, the present invention provides a video signal processing method and a video signal processing apparatus using the same, and the method comprises the steps of: scaling at least one neighboring partition motion vector for a motion vector prediction of the current partition; scaling the neighboring partition motion vector, which has been selected, when the reference picture of the neighboring partition motion vector is different from the reference picture of the current partition; acquiring a motion vector prediction value of the current partition using the scaled motion vector; and acquiring a motion vector of the current partition using the motion vector prediction value.

主权项

1. A method of processing a video signal, the method comprising:
obtaining index information from the video signal, the index information specifying a motion vector candidate to be used as a motion vector predictor of a current block; deriving at least one spatial motion vector from at least one neighboring block satisfying one of selection conditions, the at least one neighboring block being adjacent to the current block; constructing a motion vector candidate group of the current block, the motion vector candidate group comprising a plurality of motion vector candidates including the derived at least one spatial motion vector; assigning a motion vector candidate specified by the index information from among the motion vector candidate group to the motion vector predictor of the current block; and obtaining a prediction sample of the current block based on the motion vector predictor, wherein the selection conditions include: a first condition that the at least one neighboring block has a different reference picture list from the current block and a same reference picture as the current block, and wherein whether the at least one neighboring block has the same reference picture as the current block is determined based on picture order count (POC) information.