METHOD AND APPARATUS FOR ENCODING VIDEO BY USING BLOCK MERGING, AND METHOD AND APPARATUS FOR DECODING VIDEO BY USING BLOCK MERGING

摘要

Provided are a method and apparatus for encoding a video by using block merging and a method and apparatus for decoding a video by using block merging. The method of encoding includes: determining an encoding mode indicating a current data unit for encoding of a picture and an encoding method including prediction encoding performed for the current data unit; determining an occurrence of merging with at least one neighboring data unit based on at least one of the encoding mode and a prediction mode; and determining prediction mode information, merging related information, and prediction related information, and determining encoding information of the data unit including the prediction mode information, the merging related information, and the prediction related information.

主权项

1. A method of decoding a video by using data unit merging, the method comprising:
obtaining, from a received bitstream, a skip flag for a coding unit which indicates whether a prediction mode for the coding unit is a skip mode; and when the skip flag indicates a non-skip mode, obtaining a merge flag for a prediction unit in the coding unit, from a received bitstream, which comprises: when the merge flag for the prediction unit indicates a merge mode, obtaining a merge index for the prediction unit from the bitstream, and determining motion information for the prediction unit using the merge index obtained from the bitstream, and when the merge flag for the prediction unit indicates a non-merge mode, obtaining motion information for the prediction unit from the bitstream, wherein the merge index indicates one block among candidate blocks adjacent to borders of the prediction unit, in a merge candidate group and the candidate blocks are decoded prior to the prediction unit according to a decoding order, and wherein the merge candidate group includes a predetermined number of available candidate blocks on predetermined locations adjacent to the border of the prediction unit according to an implicitly predetermined order, and wherein: the image is split into a plurality of maximum coding units, according to information about a maximum size of a coding unit, the maximum coding unit is hierarchically split into one or more coding units of depth including at least one of a current depth and a lower depth, according to split information, when the split information indicates a split for the current depth, the coding unit of the current depth is split into four rectangular coding units of a lower depth, independently from neighboring coding units, and when the split information indicates a non-split of the current depth, one or more prediction units are obtained from one of the coding units of the current depths.