Method and apparatus for processing a video signal
First Claim
1. A method for decoding a bitstream for a video signal comprising at least one coding block by a decoding apparatus, the method comprising:
- obtaining, by the decoding apparatus, merge flag information of a current prediction block of a plurality of prediction blocks from the bitstream, the plurality of prediction blocks being partitioned from the coding block; and
based on the merge flag information indicating that prediction information of the current prediction block is determined by prediction information of one of merging candidates, decoding, by the decoding apparatus, the current prediction block based on prediction information of a merging candidate selected from among the merging candidates,wherein, based on the coding block being partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size and the current prediction block being a bottom prediction block of the two prediction blocks, the merging candidates comprise at least one neighboring prediction block adjacent to the current prediction block other than a top prediction block of the two prediction blocks.
1 Assignment
0 Petitions
Accused Products
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.
37 Citations
19 Claims
-
1. A method for decoding a bitstream for a video signal comprising at least one coding block by a decoding apparatus, the method comprising:
-
obtaining, by the decoding apparatus, merge flag information of a current prediction block of a plurality of prediction blocks from the bitstream, the plurality of prediction blocks being partitioned from the coding block; and based on the merge flag information indicating that prediction information of the current prediction block is determined by prediction information of one of merging candidates, decoding, by the decoding apparatus, the current prediction block based on prediction information of a merging candidate selected from among the merging candidates, wherein, based on the coding block being partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size and the current prediction block being a bottom prediction block of the two prediction blocks, the merging candidates comprise at least one neighboring prediction block adjacent to the current prediction block other than a top prediction block of the two prediction blocks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A decoding apparatus for decoding a bitstream for a video signal comprising at least one coding block, the decoding apparatus comprising:
-
an entropy decoding unit configured to obtain merge flag information of a current prediction block of a plurality of prediction blocks from the bitstream, the plurality of prediction blocks being partitioned from the coding block; and an inter prediction unit configured to, based on the merge flag information indicating that prediction information of the current prediction block is determined by prediction information of one of merging candidates, decode the current prediction block based on prediction information of a merging candidate selected from among the merging candidates, wherein, based on the coding block being partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size and the current prediction block being a bottom prediction block of the two prediction blocks, the merging candidates comprise at least one neighboring prediction block adjacent to the current prediction block other than a top prediction block of the two prediction blocks. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method for encoding a bitstream for a video signal comprising at least one coding block by an encoding apparatus, the method comprising:
-
encoding, by the encoding apparatus, merge flag information of a current prediction block of a plurality of prediction blocks into the bitstream, the plurality of prediction blocks being partitioned from the coding block; and based on the merge flag information indicating that prediction information of the current prediction block is determined by prediction information of one of merging candidates, encoding, by the encoding apparatus, the current prediction block based on prediction information of a merging candidate selected from among the merging candidates, wherein, based on the coding block being partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size and the current prediction block being a bottom prediction block of the two prediction blocks, the merging candidates comprise at least one neighboring prediction block adjacent to the current prediction block other than a top prediction block of the two prediction blocks. - View Dependent Claims (18)
-
-
19. An encoding apparatus for encoding a bitstream for a video signal comprising at least one coding block, the encoding apparatus comprising:
-
an entropy coding unit configured to encode merge flag information of a current prediction block of a plurality of prediction blocks into the bitstream, the plurality of prediction blocks being partitioned from the coding block; and an inter prediction unit configured to, based on the merge flag information indicating that prediction information of the current prediction block is determined by prediction information of one of merging candidates, encode the current prediction block based on prediction information of a merging candidate selected from among the merging candidates, wherein, based on the coding block being partitioned into two prediction blocks each of which has a horizontal size greater than a vertical size and the current prediction block being a bottom prediction block of the two prediction blocks, the merging candidates comprise at least one neighboring prediction block adjacent to the current prediction block other than a top prediction block of the two prediction blocks.
-
Specification