US 12,425,577 B2
Video signal processing method and apparatus using multi-assumption prediction
Geonjung Ko, Seoul (KR); Dongcheol Kim, Suwon-Si (KR); Juhyung Son, Uiwang-Si (KR); Jaehong Jung, Seoul (KR); and Jinsam Kwak, Anyang-Si (KR)
Assigned to WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Seongnam-si (KR)
Filed by WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC., Seongnam-si (KR)
Filed on May 15, 2024, as Appl. No. 18/664,990.
Application 18/664,990 is a continuation of application No. 18/065,839, filed on Dec. 14, 2022, granted, now 12,047,562.
Application 18/065,839 is a continuation of application No. 17/227,839, filed on Apr. 12, 2021, granted, now 11,601,641, issued on Mar. 7, 2023.
Application 17/227,839 is a continuation of application No. PCT/KR2019/013450, filed on Oct. 14, 2019.
Claims priority of application No. 10-2018-0121620 (KR), filed on Oct. 12, 2018; application No. 10-2018-0145792 (KR), filed on Nov. 22, 2018; and application No. 10-2019-0111060 (KR), filed on Sep. 6, 2019.
Prior Publication US 2024/0305775 A1, Sep. 12, 2024
Int. Cl. H04N 19/105 (2014.01); H04N 19/159 (2014.01); H04N 19/176 (2014.01); H04N 19/186 (2014.01); H04N 19/70 (2014.01)
CPC H04N 19/105 (2014.11) [H04N 19/159 (2014.11); H04N 19/176 (2014.11); H04N 19/186 (2014.11); H04N 19/70 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A video signal decoding device, the video signal decoding device comprising:
a processor,
wherein the processor is configured to:
obtain a value of a first syntax element indicating whether a combined prediction is applied to a current block,
when the first syntax element indicates that the combined prediction is not applied to the current block, obtain a value of a second syntax element indicating whether a sub-block transform is applied to the current block,
wherein when the second syntax element is not present, the value of the second syntax element is inferred as a value indicating that the sub-block transform is not applied to the current block,
wherein the combined prediction is a prediction mode using inter-prediction and intra-prediction, and
wherein the sub-block transform indicates a transform mode that applies transform to part of sub-blocks of the current block divided in a horizontal direction or in a vertical direction,
when the value of the first syntax element indicates that the combined prediction is applied to the current block, reconstruct the current block based on the combined prediction,
when the value of the first syntax element indicates that the combined prediction is not applied to the current block and the value of the second syntax element indicates that the sub-block transform is applied to the current block, reconstruct the current block based on the sub-block transform.