JPWO2020096427A5

JPWO2020096427A5 -

Info

Publication number: JPWO2020096427A5
Application number: JP2021523789A
Authority: JP
Publication date: 2022-10-21
Anticipated expiration: 2039-11-08

Claims

A video decoding method comprising:
deriving merge candidates for the current block from neighboring blocks of the current block;
adding the derived merge candidates to a merge candidate list;
adding at least one prediction region merge candidate included in a prediction region motion information list to the merge candidate list if the number of merge candidates added to the merge candidate list is less than a first threshold;
deriving motion information for the current block based on the merge candidate list;
performing motion compensation on the current block based on the derived motion information;
whether or not to add the prediction region merging candidate to the merging candidate list is determined based on a comparison result between motion information of the prediction region merging candidate and motion information of the merging candidates included in the merging candidate list; Decryption method.

2. The method of claim 1, wherein the comparison is performed for at least one merge candidate whose index in the merge candidate list is less than or equal to a second threshold.

The comparison is performed on merge candidates derived from blocks at specific positions.
A video decoding method according to claim 1.

Performing the comparison on at least one of a merge candidate derived from a left neighboring block located to the left of the current block or a merging candidate derived from an above neighboring block located above the current block. A video decoding method according to claim 1, characterized in that:

if it is determined that there is a merge candidate having motion information that is the same as the motion information of the first prediction region merge candidate in the merge candidate list, the first prediction region merge candidate is not added to the merge candidate list; The second prediction region merging candidate is added to the merging candidate list based on a comparison result between the motion information of the second prediction region merging candidate included in the prediction region motion information list and the motion information of the merging candidate included in the merging candidate list. 2. The method of claim 1, further comprising determining whether to add to .

The motion information of the second prediction region merging candidate is the same as the motion information of the merging candidate having the same motion information as the motion information of the first prediction region merging candidate. 6. The video decoding method of claim 5.

The video decoding method according to claim 1, wherein a difference value between the number of prediction region merging candidates included in the prediction region merging candidates and the indices of the prediction region merging candidates is equal to or less than a third threshold.

adding a current prediction region merge candidate derived from the motion information of the current block to the prediction region motion information list, wherein:
If there is a prediction region merge candidate that is the same as the current prediction region merge candidate, deleting the prediction region merge candidate that is the same as the current prediction region merge candidate and assigning the maximum index to the current prediction region merge candidate. A video decoding method according to claim 1, characterized in that.

performing the comparison for predictive region merging candidates having indices greater than a fourth threshold
A video decoding method according to claim 1.

adding a prediction region merging candidate derived based on motion information of the neighboring block to a prediction region motion information list if it is determined that the neighboring block is not included in a predetermined region; or
further comprising not adding a prediction region merging candidate derived based on motion information of the neighboring block to a prediction region motion information list when it is determined that the neighboring block is included in a predetermined region;
The predetermined area is a merge processing area.
A video decoding method according to claim 1.

If the number of merge candidates added to the merge candidate list is less than a first threshold, the prediction region merge candidates derived based on the motion information of adjacent blocks included in the prediction region motion information list are added to the further comprising adding to a merge candidate list
11. A video decoding method according to claim 10.

adding a prediction region merging candidate derived based on the motion information of the neighboring block to the prediction region motion information list when the size of the neighboring block is equal to or larger than a predetermined size; or
The method further comprises not adding a prediction region merging candidate derived based on the motion information of the neighboring block to the prediction region motion information list when the size of the neighboring block is less than a predetermined size.
A video decoding method according to claim 1.

If the number of merge candidates added to the merge candidate list is less than a first threshold, the prediction region merge candidates derived based on the motion information of adjacent blocks included in the prediction region motion information list are added to the further comprising adding to a merge candidate list
13. A video decoding method according to claim 12.

A video encoding method comprising:
deriving merge candidates for the current block from neighboring blocks of the current block;
adding the derived merge candidates to a merge candidate list;
adding at least one prediction region merge candidate included in a prediction region motion information list to the merge candidate list if the number of merge candidates added to the merge candidate list is less than a first threshold;
deriving motion information for the current block based on the merge candidate list;
performing motion compensation on the current block based on the derived motion information;
whether or not to add the prediction region merging candidate to the merging candidate list is determined based on a comparison result between motion information of the prediction region merging candidate and motion information of the merging candidates included in the merging candidate list; Encoding method.

performing the comparison for at least one merge candidate whose index in the merge candidate list is less than or equal to a second threshold;
15. A video encoding method according to claim 14 .

The comparison is performed on merge candidates derived from blocks at specific positions.
15. A video encoding method according to claim 14.

Performing the comparison on at least one of a merge candidate derived from a left neighboring block located to the left of the current block or a merging candidate derived from an above neighboring block located above the current block. characterized by
15. A video encoding method according to claim 14 .

if it is determined that there is a merge candidate having motion information that is the same as the motion information of the first prediction region merge candidate in the merge candidate list, the first prediction region merge candidate is not added to the merge candidate list; The second prediction region merging candidate is added to the merging candidate list based on a comparison result between the motion information of the second prediction region merging candidate included in the prediction region motion information list and the motion information of the merging candidate included in the merging candidate list. characterized by determining whether to add to
15. A video encoding method according to claim 14 .

The motion information of the second prediction region merging candidate is the same as the motion information of the merging candidate having the same motion information as the motion information of the first prediction region merging candidate. 19. The video encoding method of claim 18.

A difference value between the number of prediction region merge candidates included in the prediction region merge candidates and the index of the prediction region merge candidates is less than or equal to a third threshold.
15. A video encoding method according to claim 14 .

adding a current prediction region merge candidate derived from the motion information of the current block to the prediction region motion information list, wherein:
If there is a prediction region merge candidate that is the same as the current prediction region merge candidate, deleting the prediction region merge candidate that is the same as the current prediction region merge candidate and assigning the maximum index to the current prediction region merge candidate. Characterized by
15. A video encoding method according to claim 14 .

performing the comparison for predictive region merging candidates having indices greater than a fourth threshold
15. A video encoding method according to claim 14.

adding a prediction region merging candidate derived based on motion information of the neighboring block to a prediction region motion information list if it is determined that the neighboring block is not included in a predetermined region; or
further comprising not adding a prediction region merging candidate derived based on motion information of the neighboring block to a prediction region motion information list when it is determined that the neighboring block is included in a predetermined region;
The predetermined area is a merge processing area.
15. A video encoding method according to claim 14.

If the number of merge candidates added to the merge candidate list is less than a first threshold, the prediction region merge candidates derived based on the motion information of adjacent blocks included in the prediction region motion information list are added to the further comprising adding to a merge candidate list
24. A video encoding method according to claim 23.

adding a prediction region merging candidate derived based on the motion information of the neighboring block to the prediction region motion information list when the size of the neighboring block is equal to or larger than a predetermined size; or
The method further comprises not adding a prediction region merging candidate derived based on the motion information of the neighboring block to the prediction region motion information list when the size of the neighboring block is less than a predetermined size.
15. A video encoding method according to claim 14.

If the number of merge candidates added to the merge candidate list is less than a first threshold, the prediction region merge candidates derived based on the motion information of adjacent blocks included in the prediction region motion information list are added to the further comprising adding to a merge candidate list
26. A video encoding method according to claim 25.

Video decoding apparatus, comprising an inter-predictor for performing the video decoding method according to any one of claims 1-13 .

A video encoding device, comprising an inter predictor for performing the video encoding method according to any one of claims 14-26.