Method and apparatus for processing a video signal
First Claim
1. A method for decoding a video signal comprising a coding block by a decoding apparatus, the method comprising:
- obtaining, by the decoding apparatus, a plurality of prediction blocks being partitioned from the coding block;
obtaining, by the decoding apparatus, merge flag information of a prediction block of the plurality of prediction blocks from the video signal;
obtaining, by the decoding apparatus, merge index information of the prediction block from the video signal, based on the merge flag information indicating that prediction information of the prediction block is determined by prediction information of one of neighboring prediction blocks adjacent to the prediction block; and
decoding, by the decoding apparatus, the prediction block based on prediction information of a neighboring prediction block indicated by the merge index information from among the neighboring prediction blocks,wherein, based on the coding block being partitioned into two prediction blocks, a left or top neighboring prediction block is not included in the neighboring prediction blocks.
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Abstract
The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.
39 Citations
20 Claims
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1. A method for decoding a video signal comprising a coding block by a decoding apparatus, the method comprising:
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obtaining, by the decoding apparatus, a plurality of prediction blocks being partitioned from the coding block; obtaining, by the decoding apparatus, merge flag information of a prediction block of the plurality of prediction blocks from the video signal; obtaining, by the decoding apparatus, merge index information of the prediction block from the video signal, based on the merge flag information indicating that prediction information of the prediction block is determined by prediction information of one of neighboring prediction blocks adjacent to the prediction block; and decoding, by the decoding apparatus, the prediction block based on prediction information of a neighboring prediction block indicated by the merge index information from among the neighboring prediction blocks, wherein, based on the coding block being partitioned into two prediction blocks, a left or top neighboring prediction block is not included in the neighboring prediction blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus for decoding a video signal comprising a coding block, the apparatus comprising:
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a processor configured to; obtain a plurality of prediction blocks being partitioned from the coding block, obtain merge flag information of a prediction block of the plurality of prediction blocks from the video signal, obtain merge index information of the prediction block from the video signal, based on the merge flag information indicating that prediction information of the prediction block is determined by prediction information of one of neighboring prediction blocks adjacent to the prediction block, and decode the prediction block based on prediction information of a neighboring prediction block indicated by the merge index information from among the neighboring prediction blocks, wherein, based on the coding block being partitioned into two prediction blocks, a left or top neighboring prediction block is not included in the neighboring prediction blocks. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification