Method and apparatus for processing a video signal
First Claim
1. A method for encoding a video signal comprising at least one coding block by an encoding apparatus, the method comprising:
- obtaining, by the encoding apparatus, a plurality of prediction blocks being partitioned from the coding block;
obtaining, by the encoding apparatus, merge flag information indicating whether prediction information of a current prediction block of the plurality of prediction blocks is determined by prediction information of a merging candidate selected from merging candidates, the merging candidates comprising at least one neighboring prediction block adjacent to the current prediction block; and
encoding, by the encoding apparatus, the current prediction block based on the prediction information of the selected merging candidate when the merge flag information indicates that the prediction information of the current prediction block is determined by the prediction information of the selected merging candidate,wherein, when the coding block is partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size, and the current prediction block is a bottom prediction block of the two prediction blocks, a top prediction block of the two prediction blocks is not included in the merging candidates.
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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
21 Claims
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1. A method for encoding a video signal comprising at least one coding block by an encoding apparatus, the method comprising:
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obtaining, by the encoding apparatus, a plurality of prediction blocks being partitioned from the coding block; obtaining, by the encoding apparatus, merge flag information indicating whether prediction information of a current prediction block of the plurality of prediction blocks is determined by prediction information of a merging candidate selected from merging candidates, the merging candidates comprising at least one neighboring prediction block adjacent to the current prediction block; and encoding, by the encoding apparatus, the current prediction block based on the prediction information of the selected merging candidate when the merge flag information indicates that the prediction information of the current prediction block is determined by the prediction information of the selected merging candidate, wherein, when the coding block is partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size, and the current prediction block is a bottom prediction block of the two prediction blocks, a top prediction block of the two prediction blocks is not included in the merging candidates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 21)
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11. An encoding apparatus for encoding a video signal comprising at least one coding block, the encoding apparatus comprising:
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an inter prediction unit configured to; obtain a plurality of prediction blocks being partitioned from the coding block; obtain merge flag information indicating whether prediction information of a current prediction block of the plurality of prediction blocks is determined by prediction information of a merging candidate selected from merging candidates, the merging candidates comprising at least one neighboring prediction block adjacent to the current prediction block; and encode the current prediction block based on the prediction information of the selected merging candidate when the merge flag information indicates that the prediction information of the current prediction block is determined by the prediction information of the selected merging candidate, wherein, when the coding block is partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size, and the current prediction block is a bottom prediction block of the two prediction blocks, a top prediction block of the two prediction blocks is not included in the merging candidates. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification