Granted Patent B2

US 12,519,971 · App. 18/346,914 · Granted Jan 6, 2026

Inventors: Hui Yong Kim (Daejeon, KR); Sung Chang Lim (Daejeon, KR); Jin Soo Choi (Daejeon, KR); Jin Woong Kim (Daejeon, KR); Gwang Hoon Park (Seongnam-si, KR); Kyung Yong Kim (Suwon-si, KR)

Assignees: Electronics and Telecommunications Research Institute; UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY

H04N19/573H04N19/105H04N19/136H04N19/436H04N19/52H04N19/593H04N19/61

Abstract

Claims (34)

1 . A video decoding method, comprising:

deriving information for block availability of a neighboring block for a current block;

deriving information for motion information availability of the neighboring block of the current block based on the information for block availability of the neighboring block;

constructing a merge candidate list for the current block based on the derived information for motion information availability of the neighboring block;

determining motion information of the current block based on the merge candidate list; and

obtaining prediction samples of the current block by using the motion information of the current block,

wherein the deriving information for block availability of the neighboring block comprises:

in a block availability derivation process of the neighboring block, deriving the information for block availability of the neighboring block based on whether slice information and tile information of the neighboring block are equal to slice information and tile information of the current block and whether a prediction mode of the neighboring block is an inter prediction mode or not; and

in a step of setting merge candidate from neighboring blocks of the current block, resetting the derived information for block availability of the neighboring block based on parallel merge level information indicating a size of a block in which a parallel merge processing is applicable,

wherein the information for block availability indicates whether a corresponding neighboring block is usable for an inter prediction of the current block and the information for motion information availability indicates whether motion information of the corresponding neighboring block is included in the merge candidate list,

wherein the information for motion information availability of the neighboring block is derived by a predetermined order restriction.

2 . A video encoding method, comprising:

determining motion information of a current block;

obtaining prediction samples of the current block;

deriving information for block availability of a neighboring block for the current block;

deriving information for motion information availability of the neighboring block of the current block based on the information for block availability of the neighboring block; and

constructing a merge candidate list for the current block based on the derived information for motion information availability of the neighboring block;

wherein the deriving information for block availability of the neighboring block comprises:

in a block availability derivation process of the neighboring block, deriving the information for block availability of the neighboring block based on whether slice information and tile information of the neighboring block are equal to slice information and tile information of the current block and whether a prediction mode of the neighboring block is an inter prediction mode or not; and

in a step of setting merge candidate from neighboring blocks of the current block, resetting the derived information for block availability of the neighboring block based on parallel merge level information indicating a size of a block in which a parallel merge processing is applicable,

wherein the information for block availability indicates whether a corresponding neighboring block is usable for an inter prediction of the current block and the information for motion information availability indicates whether motion information of the corresponding neighboring block is included in the merge candidate list,

wherein the information for motion information availability of the neighboring block is derived by a predetermined order restriction.

3 . A method for transmitting a bitstream comprising:

determining motion information of a current block;

obtaining prediction samples of the current block;

deriving information for block availability of a neighboring block for the current block;

deriving information for motion information availability of the neighboring block of the current block based on the information for block availability of the neighboring block;

constructing a merge candidate list for the current block based on the derived information for motion information availability of the neighboring block; and

transmitting the bitstream including information related to the motion information of the current block;

wherein the deriving information for block availability of the neighboring block comprises:

in a block availability derivation process of the neighboring block, deriving the information for block availability of the neighboring block based on whether slice information and tile information of the neighboring block are equal to slice information and tile information of the current block and whether a prediction mode of the neighboring block is an inter prediction mode or not; and

in a step of setting merge candidate from neighboring blocks of the current block, resetting the derived information for block availability of the neighboring block based on parallel merge level information indicating a size of a block in which a parallel merge processing is applicable,

wherein the information for block availability indicates whether a corresponding neighboring block is usable for an inter prediction of the current block and the information for motion information availability indicates whether motion information of the corresponding neighboring block is included in the merge candidate list,

wherein the information for motion information availability of the neighboring block is derived by a predetermined order restriction.

Priority Claims (2)

Continuity (4)

References Cited (58)