JPWO2020096388A5

JPWO2020096388A5 -

Info

Publication number: JPWO2020096388A5
Application number: JP2021523845A
Authority: JP
Publication date: 2022-10-20
Anticipated expiration: 2039-11-07

Claims

A video decoding method comprising:
determining whether to partition a coding block to include a first prediction unit and a second prediction unit;
determining a partition type of the encoding block when determining to partition the encoding block;
deriving first motion information for the first prediction unit and second motion information for the second prediction unit of the coding block;
obtaining predicted samples in the coding block based on the first motion information and the second motion information;
obtaining the first motion information of the first prediction unit based on a first merging candidate, wherein the first merging candidate is specified from a plurality of merging candidates included in a merging candidate list according to first index information; ,
obtaining the second motion information of the second prediction unit based on a second merging candidate, wherein the second merging candidate is specified from a plurality of merging candidates included in the merging candidate list by second index information; Some video decoding method.

The video of claim 1, wherein if the value of the second index information is greater than or equal to the value of the first index information, the second merge candidate has a value obtained by adding 1 to the value of the second index information as an index. decryption method.

The video decoding method of claim 1, wherein if the value of the second index information is smaller than the value of the first index information, the value of the second index information is used as the index of the second merging candidate.

If the prediction sample is included in a boundary region between the first prediction unit and the second prediction unit, the first prediction sample derived based on the first motion information and the second prediction sample derived based on the second motion information 2. The method of claim 1, wherein the prediction samples are derived by weighting and calculating the prediction samples.

5. The video decoding method of claim 4, determining a first weighting value to be applied to the first predicted sample based on the x-axis and y-axis coordinates of the predicted sample.

6. The method of claim 5, wherein a second weighting value applied to the second predicted sample is derived by subtracting the first weighting value from a constant.

A video encoding method comprising:
determining whether to partition a coding block to include a first prediction unit and a second prediction unit;
determining a partition type of the encoding block when determining to partition the encoding block;
deriving first motion information for the first prediction unit and second motion information for the second prediction unit of the coding block;
obtaining predicted samples in the coding block based on the first motion information and the second motion information;
obtaining the first motion information of the first prediction unit based on a first merge candidate among a plurality of merge candidates included in a merge candidate list;
obtaining the second motion information of the second prediction unit based on a second merging candidate among the plurality of merging candidates included in the merging candidate list;
A video encoding method for encoding first index information for specifying the first merging candidate and second index information for specifying the second merging candidate, respectively.

8. The second index information of claim 7 , wherein if the index of the second merging candidate is greater than the index of the first merging candidate, the index of the second merging candidate minus 1 is used to encode the second index information. video encoding method.

8. The method of claim 7 , wherein if the index of the second merging candidate is less than the index of the first merging candidate, encoding the second index information into the index value of the second merging candidate.

A video decoding device comprising an inter prediction unit,
The inter prediction unit determines whether to divide a coding block to include a first prediction unit and a second prediction unit, and if determining to divide the coding block, the coding block deriving first motion information of said first prediction unit and second motion information of said second prediction unit of said coding block; said first motion information and said second motion obtaining predicted samples in the coded block based on the information; and
obtaining the first motion information of the first prediction unit based on a first merge candidate, wherein the first merge candidate is specified from a plurality of merge candidates included in a merge candidate list by first index information; obtaining the second motion information of the second prediction unit based on a second merging candidate, wherein the second merging candidate is specified from a plurality of merging candidates included in the merging candidate list by second index information; A video decoding device that is

11. The video of claim 10, wherein if the value of the second index information is greater than or equal to the value of the first index information, the second merge candidate has a value obtained by adding 1 to the value of the second index information as an index. decryption device.

The video decoding apparatus according to claim 10, wherein the value of the second index information is used as the index of the second merging candidate when the value of the second index information is smaller than the value of the first index information.

A video encoding device,
a memory storing instructions; and a processor, wherein the processor executes the instructions to
determining whether to partition a coding block to include a first prediction unit and a second prediction unit;
determining a partition type of the encoding block when determining to partition the encoding block;
deriving first motion information for the first prediction unit and second motion information for the second prediction unit of the coding block;
obtaining predicted samples in the coding block based on the first motion information and the second motion information, wherein:
obtaining the first motion information of the first prediction unit based on a first merge candidate among a plurality of merge candidates included in a merge candidate list;
obtaining the second motion information of the second prediction unit based on a second merging candidate among the plurality of merging candidates included in the merging candidate list;
A video encoding device encoding first index information for specifying the first merging candidate and second index information for specifying the second merging candidate, respectively.

14. The method of claim 13, wherein if the index of the second merging candidate is greater than the index of the first merging candidate, the second index information is encoded using a value obtained by subtracting 1 from the index of the second merging candidate. video encoding device.

14. The video encoding apparatus of claim 13, encoding the second index information into the index value of the second merging candidate if the index of the second merging candidate is less than the index of the first merging candidate.