Image encoding/decoding method and device

Abstract

An image encoding/decoding method and device, according to the present invention, comprises the steps of: configuring a motion information candidate list of a target block; selecting a candidate index from the motion information candidate list; deriving an offset for adjusting a motion vector; and recovering a motion vector of the target block through a predicted motion vector recovered on the basis of the offset.

1 . An inter prediction method, comprising:
 constructing a prediction motion candidate list of a target block;   deriving a prediction motion vector from the motion candidate list based on a prediction candidate index;   reconstructing prediction motion vector adjustment offset information; and   reconstructing a motion vector of the target block based on the prediction motion vector and the prediction motion vector adjustment offset information,   wherein the motion candidate list includes at least one of a spatial candidate, a temporal candidate, a statistical candidate, or a combined candidate.   
     
     
         2 . The method of  claim 1 , wherein the prediction motion vector adjustment offset is determined based on at least one of an offset application flag or offset selection information. 
     
     
         3 . The method of  claim 1 , wherein information on whether the prediction motion vector adjustment offset information is supported is included in at least one of a sequence, a picture, a sub-picture, a slice, a tile, or a brick. 
     
     
         4 . The method of  claim 1 , wherein when the target block is encoded in a merge mode, the motion vector of the target block is reconstructed by using a zero vector, and
 wherein when the target block is encoded in a competition mode, the motion vector of the target block is reconstructed by using a motion vector difference.