Method and device for sharing a candidate list

Abstract

The present invention relates to a method and device for sharing a candidate list. A method of generating a merging candidate list for a predictive block may include: producing, on the basis of a coding block including a predictive block on which a parallel merging process is performed, at least one of a spatial merging candidate and a temporal merging candidate of the predictive block; and generating a single merging candidate list for the coding block on the basis of the produced merging candidate. Thus, it is possible to increase processing speeds for coding and decoding by performing inter-picture prediction in parallel on a plurality of predictive blocks.

What is claimed is: 
     
         1 . A method for decoding a video signal comprising:
 determining, based on a position of a coding block, a spatial candidate block for a first prediction block, the coding block comprising a plurality of prediction blocks, wherein the first prediction block is one of the plurality of the prediction blocks;   deriving at least one of motion information candidate from the spatial candidate block based on an availability of the spatial candidate block; and   generating a motion information candidate list for the first prediction block based on the motion information candidate,   wherein the motion information candidate list for the first prediction block is equivalent to a motion information candidate list for prediction block other than the first prediction block among the plurality of the prediction blocks.   
     
     
         2 . A method for encoding a video signal comprising:
 determining, based on a position of a coding block, a spatial candidate block for a first prediction block, the coding block comprising a plurality of prediction blocks, wherein the first prediction block is one of the plurality of the prediction blocks;   deriving at least one of motion information candidate from the spatial candidate block based on an availability of the spatial candidate block; and   generating a motion information candidate list for the first prediction block based on the motion information candidate,   wherein the motion information candidate list for the first prediction block is equivalent to a motion information candidate list for prediction block other than the first prediction block among the plurality of the prediction blocks.   
     
     
         3 . A non-transitory computer-readable medium storing a bitstream formed by a method for encoding a video signal, the method comprising:
 determining, based on a position of a coding block, a spatial candidate block for a first prediction block, the coding block comprising a plurality of prediction blocks, wherein the first prediction block is one of the plurality of the prediction blocks;   deriving at least one of motion information candidate from the spatial candidate block based on an availability of the spatial candidate block; and   generating a motion information candidate list for the first prediction block based on the motion information candidate,   wherein the motion information candidate list for the first prediction block is equivalent to a motion information candidate list for prediction block other than the first prediction block among the plurality of the prediction blocks.