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Method and apparatus for encoding video by using block merging, and method and apparatus for decoding video by using block merging

  • US 10,212,427 B2
  • Filed: 06/09/2014
  • Issued: 02/19/2019
  • Est. Priority Date: 07/09/2010
  • Status: Active Grant
First Claim
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1. An apparatus for decoding a video, the apparatus comprising:

  • an obtainer configured to obtain, from a bitstream, split information for a coding unit, anda decoder configured to determine one or more partitions from the coding unit,wherein;

    when the split information indicates a non-split for the coding unit, the obtainer obtains, from the bitstream, a skip flag for the coding unit which indicates whether a prediction mode for the coding unit is a skip mode,when the skip flag indicates the skip mode, the obtainer obtains, from the bitstream, a merge index of the coding unit, the merge index of the coding unit indicating one block among a candidate block group of the coding unit, the candidate block group of the coding unit including one or more blocks among three or more neighboring blocks of the coding unit,when the skip flag indicates a non-skip mode, the obtainer obtains, from the bitstream, a partition type and merge information of a partition,when the partition type is obtained from the bitstream, the decoder determines one or more partitions, including the partition, from the coding unit based on the partition type,when the merge information for the partition indicates a merge mode, the obtainer obtains a merge index for the partition, the merge index for the partition indicating one block among a candidate block group of the partition from the bitstream, the merge information of the partition indicating whether the partition among the one or more partitions is decoded in the merge mode, and performs motion compensation on the partition using motion information based on the obtained merge index,when the split information indicates a split for a 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,when the split information indicates a non-split of the current depth, the one or more partitions are obtained from the coding unit of the current depth and one or more transformation units are obtained from the coding unit of the current depth, andwhen a left partition and a right partition are determined as the partitions of the coding unit and the partition is the right partition, the candidate block group of the partition does not include the left partition.

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