Granted Patent B2

US 12,739,421 · App. 19/028,946 · Granted Sep 15, 2026

Inventors: Jin-Young Lee (Suwon-si, KR); Woong-il Choi (Osan-si, KR)

Assignee: SAMSUNG ELECTRONICS CO., LTD.

H04N19/513H04N19/176H04N19/44

Abstract

Claims (16)

1 . A method of decoding motion information, the method comprising:

when a current block is bi-predicted, obtaining, from a bitstream, information indicating whether motion information is omitted or not;

obtaining, from the bitstream, a motion vector difference for a list 0;

if the information indicates that the motion information is not omitted, obtaining, from the bitstream, a motion vector difference for a list 1, a reference picture index for the list 0 and a reference picture index for the list 1;

if the information indicates that the motion information is omitted, determining the motion vector difference for the list 1 using a predetermined first method without obtaining from the bitstream, and determining the reference picture index for the list 0 and the reference picture index for the list 1 using a predetermined second method without obtaining from the bitstream; and

decoding the current block using the motion vector difference for the list 0, the motion vector difference for the list 1, the reference picture index for the list 0 and the reference picture index for the list 1.

2 . A method of encoding motion information, the method comprising:

when it is determined to bi-predict a current block, determining whether to omit motion information; and

generating a bitstream including information indicating whether the motion information is omitted or not, and a motion vector difference for a list 0,

wherein if it is determined not to omit the motion information, a motion vector difference for a list 1, a reference picture index for the list 0 and a reference picture index for the list 1 are included in the bitstream,

wherein if it is determined to omit the motion information, the motion vector difference for the list 1 that is not included in the bitstream is determined using a predetermined first method, and the reference picture index for the list 0 and the reference picture index for the list 1 that are not included in the bitstream are determined using a predetermined second method.

3 . A method of transmitting a bitstream,

wherein the bitstream comprises information indicating whether motion information is omitted or not, and a motion vector difference for a list 0,

wherein when a current block is bi-predicted, the information is comprised in the bitstream,

wherein if the information is generated to indicate that the motion information is not omitted, a motion vector difference for a list 1, a reference picture index for the list 0 and a reference picture index for the list 1 are included in the bitstream, and

wherein if the information is generated to indicate that the motion information is omitted, the motion vector difference for the list 1 that is not included in the bitstream is determined using a predetermined first method, and the reference picture index for the list 0 and the reference picture index for the list 1 that are not included in the bitstream are determined using a predetermined second method.

Continuity (5)

References Cited (86)